R.D. JACOBS COMPANY
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Test Fixtures : Grips and Hooks

Adjustable Test Hooks

adjhook adjhook

Used for holding smaller crimp terminals for tests to BSI spec. BS5G178 PART 1 and equivalent international standards.

A Max Jaw B C Rated Up To Fixing Thread Part No.
5mm (0.20in) 2mm (0.8in) 56.1mm (2.21in) 75N 10/32 UNF 49755-0087


Clevis Grip

clevis clevis

Designed for testing heavy-duty tension springs.

A BRated Up ToFixing ThreadPart No.
5mm (0.2in)5mm (0.2in)1000N10/32 UNF49755-0095
8mm (0.31in)8mm (0.31in)1000N5/16 UNC49755-0103

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Fabric Grip

fabric fabric

Designed for testing fabric to a number of different International Standards. Coated faces may be inserted to provide additional gripping strengths.

Max. Sample Size A X BRated Up ToFixing ThreadPart No.
50 X 4mm (1.97 x 0.16in)200N10/32 UNF49755-0210
100 X 4mm (3.94 x 0.16in)100N10/32 UNF49755-0228


Film Grip

film film

Used for flexible samples where conventional grips create stress points so reducing tensile strength. Here the sample is wrapped around the drum so spreading the load around the diameter.

SAMPLE WIDTHARated Up ToFixing ThreadPart No.
50mm (2in)50mm (2in)500N10/32 UNF49755-0160


Fixed Hooks

hook hook

ŘA Radius B Rated Up To Fixing Thread Part No.
3.2mm (0.13in) 4mm (0.16in) 50N 10/32 UNF 49755-0046
6mm (0.24in) 7mm (0.28in) 1000N 10/32 UNF 49755-0053
6mm (0.24in) 7mm (0.28in) 2500N 5/16 UNC 49755-0061


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Lever Operated Cam Grip

lvrcam lvrcam

Self tightening lever operated cam grips give positive locking on various materials for tensile testing.

MAX SAMPLE SIZE (A x B)TYPERated Up ToFixing ThreadPart No.
30mm (1.18in) wide x 5mm (0.2in) thickSmooth500N10/32 UNF49755-0111
70mm (2.76in) wide x 5mm (0.2in) thickSmooth500N10/32 UNF49755-0129
30mm (1.18in) wide x 5mm (0.2in) thickSerrated500N10/32 UNF49755-0137
70mm (2.76in) wide x 5mm (0.2in) thickSerrated500N10/32 UNF49755-0145


Miniature Filament Fixtures

wire wire

Designed for the tension testing of fine wire and yarn. Grooved mandrel and swivel plate designed to ensure centre break and specimen alignment when force is applied.

ARated Up ToFixing ThreadPart No.
80mm (3.15in) 250N10/32 UNF49755-0269


Multi Jaw Grip Fixtures

multi multi

A unique fixture, designed for gripping round and irregular shaped objects. Often used in the toy testing and clothing industries.

Sample Size DiameterRated Up ToFixing ThreadPart No.
10mm - 45mm (0.39 - 1.77in) 500NM649755-0277


Parallel Jaw Grip

lgprll lgprll

Individually controlled serrated jaws to accept a wide variety of test specimens.

ABMax. Sample SizeRated Up ToFixing ThreadPart No.
57.1mm (2.25in)6mm (0.24in)30 X 6mm (1.18 x 0.24in)1000N10/32 UNF49755-0194


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Peg Hooks

peghook peghook

Designed for mounting small and miniature tension springs.

ŘA B C Rated Up To Fixing Thread Part No.
1.5mm (0.06in) 30mm (1.18in) 6mm (0.25in) 50N 10/32 UNF 49755-0038


Pin Chuck

pinchk pinchk

Designed for gripping circular or rod type specimens

Max. Sample ŘABRated Up ToFixing ThreadPart No.
2.5mm (0.1in)75mm (2.95in)100N10/32 UNF49755-0244


Pin Vice

pin pin

General purpose pin vice, serrated grip with 1.5mm V groove to grip wire or connector pins.

Max ABMax. Sample SizeRated Up ToFixing ThreadPart No.
7mm (0.28in)20mm (0.8in)78mm (3.07in)100N10/32 UNF49755-0236


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Small Parallel Grip

smprll smprll

Rigid body with individually controlled serrated jaws. Floating ball screw attachment ensures central loading during tensile testing.

Max. Sample Size AJaw DepthRated Up ToFixing ThreadPart No.
10mm ( 0.39in)20mm (0.78in)1000N10/32 UNF49755-0202


Swivel Hooks

swivl swivl

Swivel hooks specifically designed to facilitate easier operator set-up when testing tension springs. Usually used in conjuction with fixed test hooks.

ŘA Radius B Rated Up To Fixing Thread Part No.
5mm (0.20in) 9mm (0.35in) 500N 10/32 UNF 49755-0012
6mm (0.24in) 7mm (0.28in) 1000N 10/32 UNF 49755-0020


Wedge Grip

wedge wedge

These self tightening tensile grips feature lever operated quick release serrated jaws providing excellent sample grip on a variety of materials.

Maximum Sample SizeJaw DepthRated Up ToFixing ThreadPart No.
15 X 5mm (0.59 X 0.12in)17mm (0.67in)1000N10/32 UNF49755-0178
25 x 10mm (0.98 X 0.39in)28mm (1.10in)10000N5/16 UNC49755-0186


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Wire Grip

wire wire

Designed for tension testing of wire, cord and filaments. Grooved mandrel and swivel plate designed to ensure centre break and specimen alignment when force is applied.

ARated Up ToFixing ThreadPart No.
100mm (3.95in) 1000N10/32 UNF49755-0251



R.D. Jacobs Company
Dynamometers, Crane Scales and Force Measurement equipment
Sales & Service
email: info@dynamometers.com
Address: 500 Southeast Thirteenth Street
Fort Lauderdale, Florida 33316
Phone: 954.462.1932 Fax: 954.527.4466

©2006 R.D. Jacobs Company