Testing Grips & Fixtures Catalog — Vice, Wedge, Eccentric Roller, Compression Platens

Product Catalog · Universal Testing Machine Accessories

GRIPS &
FIXTURES

Comprehensive range of tensile grips, wedge grips, eccentric roller grips, bending fixtures, compression platens, pinch grips, yarn grips & more — engineered for universal testing machines.

Product Families

50kN

Max Capacity

Face Types

Body Materials

20+

Test Standards

Overview

Grip Face Types

Interchangeable jaw faces allow a single grip body to accommodate a wide variety of specimen materials and geometries. Selecting the correct face type prevents premature jaw breaks and slippage.

Crosscut / Diamond

1×45° pyramid pattern. High grip on plastics, composites, metals. Standard for ASTM D638, E8.

Rubber Coated

Soft face distributes clamping pressure. Ideal for films, foils, paper, biomaterials, thin elastomers.

V-Jaw

V-groove for round/cylindrical specimens — wire, rod, tube, rebar. Prevents rotation under load during testing.

Blank (Smooth)

Flat smooth face. For delicate films, foils, and precision optical specimens where surface marking is unacceptable.

Wave / Knurl

5 mm wave profile. Holds flexible woven textiles and webbing without cutting fibres.

Serration 1×1

Fine diamond-cut sandpaper-like surface. Used in thread / capstan rope grips for secure cord holding.

Tip: Always match the face to specimen hardness — aggressive serrated jaws can initiate cracks in soft plastics; rubber faces prevent this by distributing load evenly across the gripping zone.

Face Type	Best Specimen	Available Finish	Applicable Standard
Crosscut 1x45° Diamond	Plastics, composites, thin metals	Hardened Steel, ENP Coated	ASTM D638, D3039, ISO 527
Rubber Coated	Films, foils, paper, elastomers, biomaterials	Bonded Neoprene / Silicone (1 mm layer)	ASTM D882, D412, ISO 37
Blank / Smooth	Delicate films, optical specimens, foils	Hardened Steel, Stainless Steel — ground & polished	General purpose, ASTM D5034
Wave Profile (5 mm)	Textiles, webbing, seat belts, narrow bands	Hardened Steel (58 HRC), Nickel-plated	ASTM D5034, D5035, ISO 13934
Serration 1×1	Yarns, cords, threads, ropes, monofilaments	Hardened Steel — fine knurl	ASTM D2256, D885, ISO 2062
V-Jaw (Groove)	Round wire, rods, tubes, rebar, cable	Hardened Steel (58 HRC), ENP / Stainless	ASTM A370, EN 10218, wire/rod tests

Product Family

Vice Grips

Versatile manual and pneumatic side-action grips for tensile, peel and compression applications. Interchangeable jaw faces accommodate a wide range of flat specimens — films, paper, sheet metal, fabrics, plastics. ⬡ Pneumatic Available — All Sizes

Vice Action Grip

Side-action screw mechanism · Dual T-handle · Interchangeable jaw faces · Manual & Pneumatic versions

30 mm

Max jaw opening

Dual-screw design accommodates thick specimens and allows jaw offset for asymmetric samples.

Face types available

Crosscut, Rubber, Blank, Wave, V-Jaw — same body, fully interchangeable jaws.

−70°

Min operating temp

Pyramid & rubber jaws rated −70 °C to +280 °C for environmental chamber testing.

100 kN

Max capacity (range)

From compact 500 N lab grips to heavy-duty 100 kN versions with 3-screw clamping.

1A · Standard Vice Grip (Manual & Pneumatic)

Body & Face Materials

Component	Material Option
Body	Aluminium / Alloy Steel
Face — Standard	Hardened Steel 58 HRC (ENP Coated)
Face — Corrosion Resistant	Stainless Steel (316L)
Rubber Jaw Layer	1 mm NBR / Neoprene bonded

Tensile Peel Compression Pneumatic Available

Jaw offset: Both jaws can be independently adjusted — useful for asymmetric or tapered specimens.

Jaw Size (W×H mm)	Max Opening	Face Options
30 × 30	10 mm	Crosscut, Rubber, Blank, Wave, V-Jaw
50 × 30	10 mm	Crosscut, Rubber, Blank, Wave
50 × 50	15 mm	Crosscut, Rubber, Blank, Wave
75 × 50	20 mm	Crosscut, Rubber, Blank
100 × 50	30 mm	Crosscut, Rubber, Blank

Available Face Types

Crosscut 1×45°

Rubber Coated

Blank (Smooth)

Wave Profile

V-Jaw (Round)

1B · Small Vice Action Grips

Compact low-force vice grips for delicate specimens — thin films, foils, biomaterials, small-format plastics. Lightweight construction minimises fixture weight on low-capacity load cells.

Small Vice Action Grip

Compact 10×30 mm jaw · Spring-return · 5/8" female eye end · Ideal for films, foils, tapes

Jaw Size (W×H mm)	Max Force	Face Types	Opening
10 × 25	≤ 500 N	Crosscut (Pyramid), Rubber Coated	0 – 8 mm
10 × 40	≤ 500 N	Crosscut (Pyramid), Rubber Coated	0 – 8 mm

1C · Single Side Opening Grips ⬡ Pneumatic — All Sizes

One-sided jaw opening for ergonomic specimen loading in high-throughput environments. Particularly suited to production test floors where rapid sample changeover is required.

Single Side Opening Grip

One fixed jaw, one pneumatic-actuated jaw · Fast specimen insertion · 25×25 to 50×25 mm

Jaw Size (W×H mm)	Actuation	Face Options
25 × 25	Manual / Pneumatic	Crosscut, Rubber, Blank
50 × 25	Manual / Pneumatic	Crosscut, Rubber, Blank

Product Family

Wedge Grips

Self-tightening wedge-action grips where clamping force increases proportionally with applied tensile load. The preferred choice for high-strength metals, composites, and reinforced polymers. Available in Closed and Through (Open) configurations.

Wedge Action Grip

Self-tightening wedge action · Clamping force increases with test load · Closed & Through types available

2A · Closed Type Wedge Grip

Enclosed body design. Suitable for flat-bar and sheet specimen (dog-bone, strip). Fixed wedge provides stable alignment under extreme tensile loads.

Capacity	Jaw Size (W×H mm)	Typical Use
5 kN	50 × 25	Plastics, films
10 kN	50 × 25	Polymers, composites
30 kN	75 × 25	Metals, laminates
50 kN	75 × 25	High-strength metals

2B · Through / Open Type Wedge Grip

Open-front body for long or irregular specimens. Wider jaw face accommodates thick flat samples and avoids edge stress concentration.

Capacity	Jaw Size (W×H mm)	Typical Use
5 kN	35 × 40	Elastomers, rubbers
10 kN	50 × 50	Thick polymers
30 kN	75 × 50	Composite panels
50 kN	75 × 50	Structural metals

Common Specifications — Both Types

Body Material	Alloy Steel
Face Material	Hardened Steel (58–62 HRC)
Surface Finish	ENP (Electroless Nickel Plated) — corrosion resistant
Jaw Inserts	Interchangeable — Crosscut, V-Jaw (round specimens), Reversible jaw option available
Self-Tightening	Yes — clamping force increases proportionally with tensile load
Operating Temp.	−40 °C to +200 °C (standard); extended range with special jaws
Standard Compliance	ASTM E8, ISO 6892-1 (metals); ASTM D3039, D3518 (composites); EN 10002
Connection Type	Threaded or female eye end (Af/Am) — adapters for all major UTM brands available

Available Jaw Face Types

Crosscut 1x45°

V-Jaw (Round)

Blank (Flat)

Note: Reversible jaw inserts are available — flip when the serration pattern wears to effectively double service life. Jaw sets are sold separately and interchangeable within the same grip size family.

Product Family

Eccentric Roller Grips

Self-tightening cam-action roller grips optimised for high-elongation specimens — rubbers, elastomers, soft plastics, and flexible composites. Initial clamping via lever; serrated roller prevents slippage throughout extension.

Eccentric Roller Grip

Cam-action self-tightening · Roller surfaces: Pyramid, Rubber, Blank · 25–100 mm widths

Size Options

Jaw Width (mm)	Roller Dia (mm)
25	30
50	30
75	30
100	30

Material & Finish Options

Component	Material / Finish
Body	Aluminium / Alloy Steel / Stainless Steel
Roller	Alloy Steel / Stainless Steel
Roller Finish	Blank (Smooth)
	Rubber Coated
	Serrated
Body Surface	Serrated / Rubber Coated

Roller Surface Finish Options

Serrated Roller

Rubber Roller

Blank Roller

Elastomers Rubbers Soft Plastics Flexible Films Paper & Cardboard High Elongation

Cam-action principle: Initial lever closes the eccentric roller; as tensile load increases the cam self-tightens, maintaining grip without over-compressing the specimen — ideal for materials sensitive to jaw clamping force.

Fixture

3-Point Bending Fixture

Standardised flexural testing fixtures for determining flexural strength and modulus. Available in single and dual roller configurations. Support block radii conform to ISO 178, ASTM D790, and ASTM D7264 testing standards.

3-Point Bending Fixture

100 / 150 / 300 mm spans · Single & Dual roller · 10 / 20 / 30 mm roller Ø · ASTM D790, ISO 178

Specifications

Parameter	Options
Span / Size	100 mm, 150 mm, 300 mm
Roller Diameter	10 mm, 20 mm, 30 mm
Fixture Type	Single Roller, Dual Roller
Support Blocks	R1, R2, R5
Body MOC	Alloy Steel, Stainless Steel, Aluminium
Roller MOC	Alloy Steel, Stainless Steel, Aluminium

Support Block Radius Guide

Block Type	Radius	Applicable Standard
R1	1 mm	ISO 178 (thin plastics)
R2	2 mm	ASTM D790 (standard plastics)
R5	5 mm	ASTM D7264 (composites)

Dual Roller: Distributes load over two points — used for 4-point bend tests and composites per ASTM D7264.

Fixture

Puncture Fixture

Standardised puncture resistance fixtures for packaging films, textiles, and protective materials. Designed and manufactured to comply with DIN and ASTM international standards. Probe descends at controlled rate; peak force and energy absorbed are recorded.

Puncture Fixture

DIN 1477 · ASTM F1306 · ASTM D4032 · Probe Ø 8 mm standard · MOC: Aluminium / Stainless Steel

Capacity	Standard	Probe Ø	Application
10 kN	DIN 1477	8 mm	Sheet metal, rigid materials — puncture resistance
20 kN	ASTM F1306	8 mm	Flexible packaging films — slow rate puncture resistance
20 kN	ASTM D4032	25.4 mm	Fabric stiffness and puncture resistance

Material of Construction

Frame / Ring	Aluminium / Stainless Steel
Probe	Hardened Alloy Steel (ENP)
Clamp Ring	Aluminium / Stainless Steel
Sample Dia.	Customisable ring bore

Packaging Films Textiles Sheet Metal Protective Clothing DIN 1477 ASTM F1306 ASTM D4032

Fixture

Compression Platens

Circular compression platens available in fixed and self-aligning configurations. Self-aligning platens use a spherical seat to automatically correct for specimen surface non-parallelism, preventing eccentric loading errors.

Compression Platens

Fixed & self-aligning types · Ø 25–250 mm · Up to 50 kN · Aluminium, Alloy Steel, Stainless Steel

Diameter & Load Specifications

Diameter (mm)	Max Load	Type Available
Ø 25	50 kN	Fixed / Self-Aligned
Ø 50	50 kN	Fixed / Self-Aligned
Ø 75	50 kN	Fixed / Self-Aligned
Ø 100	50 kN	Fixed / Self-Aligned
Ø 150	50 kN	Fixed / Self-Aligned
Ø 250	50 kN	Fixed / Self-Aligned
Square (custom)	On Request	Fixed

Material Options

MOC	Application Suitability
Alloy Steel	Standard compressive testing, foams, plastics, wood
Stainless Steel	Wet / corrosive environments, food, pharma
Aluminium	Low-load applications, weight-sensitive setups

Square platens available on request only. Suitable for brick, tile, and block compression testing.

Product Family

Pinch Grip

Ultra-low-force precision grips for biomaterials, sutures, thin wire, electronic components, and other delicate specimens where maximum clamping force must be tightly controlled.

Pinch Grip

5×10 / 10×10 / 10×20 mm jaws · Blank & Rubber faces · Up to 1 kN · 5 mm opening

Specifications

Parameter	Value
Max Force	Up to 1 kN
Opening	Up to 5 mm
Jaw Sizes	5×10 mm, 10×10 mm, 10×20 mm
Face Types	Blank, Rubber Coated
MOC	Alloy Steel, Stainless Steel

Typical Applications

Sutures Thin Wire Biomaterials Electronic Components Packaging Seals ≤ 1 kN

Face Selection Guide

Blank Face	Wire, metal strip — no surface marking
Rubber Face	Sutures, soft tissue, packaging films — pressure distribution

Product Family

Yarn & Thread / Capstan Rope Grips

Specialist grips for textile fibres, yarns, cords, ropes, monofilaments, and fishing lines. Two designs: pneumatic cam-action for yarn, and capstan/barrel wrapping for rope and thread.

8A · Pneumatic Yarn Grip

Pneumatic Yarn Grip

30×10 mm face · Rubber coated / Blank · Pneumatic actuation · Up to 1 kN · Aluminium body

Parameter	Value
Capacity	Up to 1 kN
Face Size	30 × 10 mm
Opening	Up to 5 mm
Body MOC	Aluminium
Face MOC	Alloy Steel / Stainless Steel
Face Types	Rubber Coated, Blank
Actuation	Pneumatic

Yarn Thread Monofilament Pneumatic

8B · Thread Grip / Capstan Rope Grip

Thread / Capstan Grip

Barrel wrap principle — no direct jaw clamping · 15×35 mm · Rubber / Blank / Diamond 1×1 surfaces

Parameter	Value
Face Size	15 × 35 mm
Opening	Up to 5 mm
Body MOC	Aluminium
Face Types	Rubber Coated, Blank, Serration 1×1

Available Face Types

Rubber Coated

Blank

Diamond 1×1

Rope Cord Twine Fishnets Sutures

Capstan mechanism: Specimen wraps around a barrel pin, removing direct clamping — prevents fibre crushing while providing high holding force for ASTM D2256, D885 tests.

Reference

Grip Selection Guide

Use this table to quickly match specimen type to the recommended grip family.

Specimen / Material	Recommended Grip	Recommended Face	Typical Standard
Plastic film / thin sheet	Pneumatic Vice Grip	Rubber Coated	ASTM D882
Rigid plastic (dog-bone)	Vice Grip / Wedge Grip	Crosscut Diamond	ASTM D638, ISO 527
Metals (flat / sheet)	Wedge Grip (Closed)	Serrated / Crosscut	ASTM E8, ISO 6892
Composites / CFRP	Wedge Grip (Through)	Serrated	ASTM D3039, D7264
Elastomers / rubbers	Eccentric Roller Grip	Rubber Coated Roller	ASTM D412, ISO 37
Flexible packaging	Pneumatic Vice / Roller	Rubber Coated	ASTM F1306
Textiles / fabrics	Vice Grip (wide jaw)	Rubber Coated / Serrated	ASTM D5034, D5035
Yarns / fibres	Pneumatic Yarn Grip	Rubber Coated / Blank	ASTM D2256, ISO 2062
Ropes / cords	Capstan Rope Grip	Diamond 1×1 / Rubber	ASTM D885, EN ISO 2307
Biomaterials / sutures	Pinch Grip	Rubber Coated	ISO 10993
Flexural specimens	3-Point Bending Fixture	—	ISO 178, ASTM D790
Foam / rubber blocks	Compression Platens	—	ASTM D575, ISO 3386
Packaging puncture	Puncture Fixture	—	ASTM F1306, D4032

Reference

Body Material Comparison

Choose the correct body material to match your test environment — wet, corrosive, high-load, or weight-critical.

MOC	Advantages	Limitations	Best For
Aluminium	Lightweight, low inertia, excellent for low-capacity cells, anodized for wear resistance	Lower max. load capacity; softer than steel	Films, foils, yarns, biomaterials; weight-critical setups; low to medium force (<5 kN)
Alloy Steel	High strength, rigid, handles up to 100 kN+; ENP coated for corrosion resistance	Heavier; may corrode in aggressive media without coating	Metals, composites, structural materials; high-force testing (>10 kN)
Stainless Steel	Excellent corrosion resistance; suitable for aggressive chemicals, salt spray, biofluids	Higher cost; slightly lower hardness than alloy steel tools	Food, pharma, medical devices, wet environments, saline/chemical exposure

ENP (Electroless Nickel Plate) — Note

Electroless nickel plating deposits a uniform 25–75 µm nickel-phosphorus layer over the entire surface — including recesses and blind holes — providing:

Corrosion Resistance Hardness 45–65 HRC Uniform Thickness Non-magnetic

ENP-coated alloy steel offers a cost-effective alternative to full stainless steel in mildly corrosive environments. However, for strong acids/alkalis or saline immersion, full 316L stainless steel is recommended.

Temperature note: All steel grips operate from −70 °C to +280 °C. Rubber-coated jaws are rated for the same range; pure rubber elements (seals, gaskets) may limit range — consult application engineer for extended temperature testing.

Accessories

Thread & Eye End Adapters

Adapters allow any grip or fixture to mount on any UTM machine regardless of thread standard. Male pin (Am), female bore (Af), M-thread, UNC/UNF, BSF, and flange types — covering all major crosshead connection standards. Swivel, cardan, angle, and chain variants available for special loading configurations.

Core Coupling Adapters — Pin & Bore Connections

Male pin to female bore coupling adapter

Adapter Type 01

Male Pin → Female Bore

Pin-to-bore coupling. Male pin on one end inserts into a female socket bore on the other end. Set-screw secured. Pin and bore sizes matched to your machine crosshead — specify pin diameter and bore diameter when ordering.

15.8 mm pin 31.75 mm pin Custom bore Ø Set-screw lock

Pin Ø	15.8 mm · 31.75 mm · custom
Bore Ø	15.9 mm · 20 mm · 31.8 mm · custom
Lock	Set-screw through side hole
MOC	Alloy Steel / Stainless Steel

Male pin with external locking nut to female bore adapter

Adapter Type 02

Pin + Lock-Nut → Female Bore

Pin end plus an external thread with counter-nut for positive locking under vibration or cyclic loading. Female bore on the opposite end. Preferred over plain set-screw version when load reversals or vibration are expected.

Counter-nut lock Anti-vibration Cyclic load safe

Pin Ø	15.8 mm · 31.75 mm
Thread lock	External thread with 2-nut counter-locking
Bore Ø	15.9 mm · 31.8 mm · custom

Male pin with locknut to female thread adapter

Adapter Type 03

Pin + Lock-Nut → Female Thread

Most versatile pin-to-thread adapter. Male pin with external thread and locking nut transitions to a female threaded bore. Suits grip bodies with internal threads when machine crosshead has a male pin.

15.8 / 31.75 mm pin M-thread / UNC / BSF

Pin Ø	15.8 mm · 31.75 mm · custom
Female thread	M5 – M48 · 1/4-20 UNC – 2"-12 UNC · BSF
Lock	External counter-nut on pin end

Female bore to female internal thread adapter

Adapter Type 04

Female Bore → Female Thread

Large cylindrical body with a female pin-socket bore on one end and a female internal thread on the other. Bridges crossheads with male pins to grip bodies with male threaded stems. Set-screw lock on the pin side.

15.9 mm bore 31.8 mm bore Internal thread

Bore Ø	15.9 mm · 31.8 mm · custom
Thread	M6 – M36 · UNC / BSF as ordered
Body	Hex flats or round · side set-screw

Female bore adapter to external male thread

Adapter Type 05

Female Bore → Male Thread

Female socket bore on the crosshead side transitions to an external male thread on the grip side. Lock-nut counters the thread under load. Available from small 15.9 mm bores up to 60 mm bore for high-capacity crossheads.

15.9 – 60 mm bore External M-thread Lock-nut included

Bore Ø	15.9, 30, 40, 60 mm · custom
Male thread	M10 – M48 · UNC · custom pitch
Lock	Counter-nut on thread end

Adapter Type 06

Double Female Bore (Coupling Sleeve)

Cylindrical sleeve with female socket bores at both ends. Joins two male pins — for example joining a crosshead pin to a grip pin — to make an extension or to adapt between two machines each having male pins.

Bore–Bore both ends Extension coupling

Bore A & B	15.9 mm · 31.8 mm · or custom on each end
Lock	Set-screw each end
Use	Pin-to-pin extension · machine-to-machine adaptation

Adapter Type 07

Double Male Pin

Adapter with male pins at both ends, each with external thread and lock-nut. Inserts into female socket grips on both sides. Scope of delivery: 1 adapter body + 2 counter-nuts + 2 dowel pins. Connects two female-socket heads through one intermediate body.

Pin–Pin both ends 2 nuts + 2 pins incl. Double lock-nut

Pin ends	15.8 mm · 31.75 mm
Scope	1 adapter + 2 nuts + 2 pins
Lock	External thread with counter-nut each side

Female bore adapter with hex socket cap screw lock

Adapter Type 08

Female Bore + Cap Screw Lock

Female socket bore secured by a hex socket head cap screw instead of a plain set-screw. Provides stronger clamping and better access for torque-wrench tightening. Ideal for high-load, precision-aligned applications.

15.9 mm / 31.8 mm bore Cap-screw lock High-load

Bore Ø	15.9 mm · 31.8 mm
Lock screw	Hex socket head cap screw — M6, M8, M10
Other end	M-thread or pin as specified

Thread Conversion Adapters

Convert between metric (M-series), UNC/UNF, BSF thread standards — or step up / reduce thread diameter between grip body and machine crosshead.

Adapter Type 09

Male → Female Thread (Reducer)

Reduces or converts between an external male thread and a female internal thread of different standard or diameter. Hex body for spanner access. Covers common metric, UNC, and BSF combinations from M10 up to M64.

M-thread UNC / BSF Hex body

Male thread	M10 – M64 · UNC as specified
Female thread	M6 – M48 · UNC / BSF as specified
Body	Hex flats for spanner / adjustable wrench

Small to large male thread step-up adapter

Adapter Type 10

Small → Large Male Thread (Step-Up)

Both ends are male threads — small on one side, large on the other. Used when a grip has a smaller male thread than the machine's female crosshead requires. Specify both thread standards and diameters when ordering.

Male–Male both ends Step-up M6 – M64 range

Small end	M6 – M36 · UNC as specified
Large end	M12 – M64 · UNC as specified
MOC	Alloy Steel / Stainless Steel

Adapter Type 11

Female Thread → Female Thread

Internally threaded on both ends. Joins two male-threaded stems from opposite sides — for example connecting a grip body stem directly to a crosshead threaded stem. Both threads can be the same standard or different standards.

Internal–Internal M / UNC / BSF Same or mixed std.

Thread A	M6 – M48 · UNC / BSF
Thread B	M6 – M48 · same or different from A
Body	Hex body · compact barrel

Flanged High-Capacity Adapters

Bolt-circle flange connections for 100 kN+ load paths or for attaching fixtures to custom crossheads with PCD bolt patterns.

Adapter Type 12

Male Pin → Flange

Male pin on the crosshead side with a bolted circular flange on the grip / fixture side. Bolt circle diameter and count customised to machine crosshead PCD. For large crossheads and high-capacity frames above 100 kN.

31.75 mm / custom pin 100 kN+ Custom PCD

Pin Ø	31.75 mm · 15.8 mm · custom
Flange	4 / 6 / 8 bolts · PCD to machine spec
MOC	Alloy Steel / Stainless Steel

Female bore adapter to bolt-circle flange

Adapter Type 13

Female Bore → Flange

Female socket bore on the grip side combined with a bolt-circle flange for bolting to a custom crosshead or load frame interface plate. Holes or threads in the flange as specified. Suited to high-capacity crossheads with bolted attachment interfaces.

36 – 60 mm bore Flange with PCD bolts Tapped or through holes

Bore Ø	36 · 40 · 50 · 60 mm · custom
Flange	4 / 6 / 8 bolt PCD · holes or tapped threads
MOC	Alloy Steel / Stainless Steel

Adapter Type 14

Thread Stem → Flange

Male threaded stem or female threaded socket combined with a bolt-circle flange. Permits bolted attachment to machine crossheads with PCD bolt patterns while providing a thread connection to the grip body. Available as male-stem or female-socket flange variants.

Male stem variant Female socket variant Custom flange PCD

Stem / thread	M12 – M48 · UNC as specified
Flange	4 / 6 / 8 bolt · PCD to machine spec
MOC	Alloy Steel / Stainless Steel

Motion-Allowing & Special-Purpose Adapters

Swivel, cardan, angle, and chain adapters for applications requiring rotation freedom, angular misalignment compensation, or off-axis loading.

Rotation swivel adapter with axial ball bearing

Adapter Type 15

Rotation / Swivel Adapter (Ball Bearing)

Turnable adapter with precision axial ball bearing. Allows 360° free rotation between the two ends — eliminates torque transmission to the specimen. Essential for ropes, twisted cables, wire coils, and yarns that unwind under tension. Pin end on one side, socket bore on the other.

360° free rotation No torque transfer 20 kN

Bearing	Axial ball bearing · precision grade
Pin end	15.8 mm male pin
Bore end	15.9 mm female socket
Best for	Ropes, cables, twisted yarns, wire coils

Adapter Type 16

Cardan / Universal Joint

Two-plane angular compensation. Prevents eccentric side-loading when specimen or fixture is not perfectly co-axial with the crosshead. Male pin on one side, female bore on the other. Used for peel fixtures, off-axis specimens, and angled loading.

2-plane angular Eccentric load safe Pin · Bore ends

Pin end	15.8 mm male pin
Bore end	15.9 mm female socket
Best for	Peel fixtures, T-peel, 90° peel, flexible specimens

Specialty Adapters & Accessories

Flat segment keeper adapter for smaller grip in hydraulic wedge head

Adapter Type 20

Wedge Grip Keeper (Flat Segment)

Flat segment adapter for holding a smaller grip inside a larger hydraulic wedge head. Allows narrow vice-type grips to be used in a wide hydraulic head — expanding the grip range of a single machine without changing the head. Pair supplied per set.

Grip-in-grip Hydraulic head compatible Flat segment pair

Function	Keeps smaller grip in larger hydraulic wedge head
Format	Flat segment pair · pin end for head retention
Specify	Outer head jaw width · inner grip stem size

Adapter Type 21

Test Hooks

Swaged or machined hooks in small, medium, and large sizes. Thread or pin end at the body for attachment to the grip or adapter. Used for loop specimens, rings, chains, hanging fixtures, and hook-to-hook pull tests. Stainless steel available.

3 sizes M-thread or pin end Stainless option

Sizes	Small · Medium · Large
Attachment	M-thread body or male pin end
MOC	Alloy Steel · Stainless Steel on request

Male pin with locking nut and counterbored cap screw recess

Adapter Type 22

Male Pin + Nut + Cap Screw Counterbore

Male adapter pin with external counter-locking nut and a counterbored recess for a hex socket cap screw. The cap screw fixes the adapter into a grip body from the inside, providing a flush, torque-resistant connection. Preferred for high-load and reversible-load applications.

Counter-nut lock Cap screw counterbore Torque-resistant

Pin Ø	31.75 mm · 15.8 mm · custom
Counter-nut	Included · hex form
Counterbore	Hex socket cap screw M6 / M8 / M10

Crosshead Connection Type Reference

Common crosshead connection types found on testing machines. Identify your machine's connection type and select the matching adapter from the tables above.

Crosshead Connection Type	Pin / Bore Ø	Thread Standard	Typical Capacity	Adapter Required
Large male pin (31.75 mm)	31.75 mm pin	—	50 kN+	Type 04 or 05 — female bore 31.8 mm
Small male pin (15.875 mm)	15.875 mm pin	—	Up to 20 kN	Type 04 — female bore 15.9 mm
Male thread (medium metric)	—	M20 / M24 / M30	50–100 kN	Type 11 or 09 — female thread
Female thread (fine metric)	—	M10 / M12 / M16	10–30 kN	Type 10 or 03 — male thread end
Female eye end (15.9 mm)	15.9 mm bore	—	Up to 20 kN	Type 01 or 07 — 15.8 mm male pin
Female thread (UNC inch)	—	1/4-20 UNC – 5/8-11 UNC	Various	Type 03 or 10 — matching UNC male
Bolted flange (PCD bolt pattern)	—	—	100 kN+	Type 12, 13, or 14 — matching flange
BSF / Whitworth inch thread	—	BSF / Whitworth	Various	Type 09 or 11 — BSF conversion

Female Socket Sizes (Af)

Code	Bore Ø (mm)	Depth (mm)	Max Load	Notes
Af8	8.0	3	500 N	Miniature
Af159	15.9	8	20 kN	5/8" — most common
Af16	16.0	6.5	10 kN	—
Af20	20.0	8	20 kN	—
Af25	25.0	10	30 kN	—
Af318	31.8	12.8	50 kN	10/8" — large pin standard
Af36	36.0	18	50 kN	—
Af40	40.0	16	100 kN	—
Af50	50.0	24	200 kN	—
Af60	60.0	30	250 kN	—
Af64	64.0	30	300 kN	—
Af70	70.0	35	300 kN	—

Male Pin Sizes (Am)

Code	Pin Ø (mm)	Tol.	Max Load	Notes
Am8	8.0	—	500 N	Miniature
Am119	11.9	f6	10 kN	—
Am158	15.8	f6	20 kN	5/8" — most common
Am19	19.0	f6	—	6/8"
Am20	20.0	f6	20 kN	—
Am317	31.75	f6	50 kN	10/8" — large pin standard
Am35	35.0	f6	50 kN	Large hydraulic
Am40	40.0	f6	100 kN	—
Am45	45.0	f6	—	—
Am50	50.0	f6	200 kN	—

Custom adapters: Any combination of connection standards can be manufactured on request — specify your machine crosshead connection type, dimensions, and the required grip end. Stainless steel (316L) versions available for all adapter types for use in corrosive, wet, or saline test environments.