TestResources Inc products and services are not endorsed by affiliated with or sponsored by Instron Corporation.
Instron is a registered trademark owned by Illinois Tool Works Inc.

Whether you are replacing worn out used Instron grips or whether you need new test fixtures for a new application TestResources has your solution.

We offer hundreds of established fixture designs and products in stock for testing hundreds of tensile compression peel shear flexural and torsion test applications. All TestResources grips and fixtures are compatible with Instron universal test machines.

Save 50% on high quality grips and fixtures

Most customers gave us a chance because of our prices but they all come back because of our great value customer service and the quality of our engineering solutions.

Compared to Instron products and prices our products can cost 50% less. More importantly our quality is proven by the growing number of repeat customers who keep coming back to TestResources.

We apply the same design and manufacturing philosophy to grips and test fixtures as we do to our universal test machines which allows us to have an amazing number of standard grips and fixtures as well as have surprisingly low prices.

Are you an Instron lab? Not anymore!

Many of our best customers were committed to using only Instron products until they got frustrated with high prices for Instron grips and fixtures. As TestResources customers they now regularly save up to 50% on their tensile compression bend and ASTM and ISO grips and fixtures.

I wanted to tell you how impressed I am. You guys knew what I needed before I even really understood what I was looking for. In about 20 minutes you had it all figured out.

Tom a long time Instron customer.

I have a quote from Instron for $7000. Any idea why it would be so expensive? My only reluctance was the vast cost difference seemed too good to be true. Thank you so much.

Jenifer a former Instron customer.

I bought my machine from Instron but outfitted it with accessories from TestResources because I saved a bundle.

Joseph an existing Instron customer.

Not only do they save money on grips but former Instron buyers are saving money on our Universal Test Machines.

ASTM grips and fixtures for sale

Are you looking for special fixtures for ASTM or ISO test methods? TestResources fixtures are available for all mechanical test methods.

Some of our test fixtures are universal and have been designed to test multiple standards. In the case of flexural bend fixtures swapping out a few parts allows you to test to multiple standards without having to buy two complete fixtures. Our modular design approach saves you money.

Go here to find grips by ASTM ISO and other standards

Need Adapters and Couplers for your Instron?

Of course we have adapters to mount our products on Instron test machines. All we need to know is the size of existing pin cup or threads of your test machine. Finding the right adapter for your machine is easy so don’t worry about it. Focus on your test sample and test method and let us work the details to get the right fixture and adapter for your needs.

Contact a fixture specialist now

Need a non standard solution? That’s us.

Maybe you have something we have never seen before (it happens). If so we really shine when it comes to solving special challenges. Our company philosophy has created an environment where our tailored solutions are often less expensive than the competition's standard products. Give us a call - we love to be challenged because we shine.

Grips for Instron tensile test machines

Tensile grips are designed to pull the sample apart or to a specified point of elongation. The most common styles are mechanical vise wedge and pneumatic grips. We can help you select the optimal grip or jaw taking into full account the nature of your test sample. We can inform you of the tradeoffs including price load capacity jaw design and all the considerations to help you make an informed decision.

More tensile grips

Tensile Vice Grips

Vice grips are the most affordable solution for most applications up to 50 kN (11 250 lb) force capacity. Interchangeable jaw inserts are made to match a wide variety of sample sizes and materials. Rubber coated jaws are used for soft materials and lower pull forces. Serrated steel jaws are used for high strength materials and high forces. We even make special jaws for your special test samples.

Mechanical Pneumatic and Hydraulic Wedge grips

Wedge grips increase the sample clamp load as the tension force goes up allowing them to resist sample slippage at higher forces. All things being equal wedge grips are more expensive than vise grips.

Tensile grips for your Instron UTM

Many grips are available in three styles of clamping: manual pneumatic and hydraulic. When making a choice between clamps it is often helpful to talk with one of our grip engineers. Just call us.

Compression fixtures

Again the most common reason why new customers buy from TestResources is because of our affordable price. A standard compression platen costs you about $100. We offer many different sizes available in a variety of materials (stainless steel hardened steel Delrin aluminum etc). They come in sizes from small to large and as spherical or fixed platens T slotted plates and in round or square forms – all depending on your test sample size and form.

Compression fixtures for your Instron compression test machine

Flexural Bend Test Fixtures

We offer an amazing modular line of flexural bend fixtures that are configured to your specific test method needs. Virtually all industry test standards require slightly different bend fixtures when it comes to the fixture details. They are generally more complicated to configure than other types of fixtures but adapting them to the machine remains straightforward.

Peel Fixtures compatible with Instron Peel Test Machines

In peel testing applications repeatability of test results requires a controlled constant test speed and a constant angle of separation. Peel tests are needed by customers in adhesives automotive biomedical coatings composites electronics geotextiles labels leather metals packaging plastics rubber tape textiles wood products industries.

Puncture Fixtures

Our approach to delivering affordable puncture fixtures is based on being able to configure fixtures to specific test samples and ASTM ISO test methods. We can deliver a solution compatible with Instron test machines.

Shear fixtures

Shear fixtures are common accessories for universal test machines. They can be designed to ASTM or ISO industry standard tests. Tests vary such as lap shear shear in tension compression shear and planar shear. All that is needed for instron compatibility is one of our Instron adapters.

ASTM and ISO fixtures

TestResources specializes in the design and supply of test fixtures that match up to ASTM ISO DIN EN and Tappi test standards. Each fixture is made of materials matched to the application including ambient high and low temperature environments and saline bathes (for biomedical applications).

Dynamic or fatigue grips

Fatigue rated test fixtures and grips are a common test accessory for instron fatigue and dynamic test machines. Our grips are designed for common applications such as biomedical devices composites metals and rubber materials and products.

Environmental Systems Solutions

We engineer and supply environmental (humidity/high temperature/low temperature) systems with corrosion resistant test fixtures and grips. Our environmental chambers and bathes can be added to existing instron test frames and machines.

Grips and Fixtures compatible with Instron Model Test Machines

In fact our grips fixtures and accessories compete with Instron accessories including their models

  • 2420
  • 2702
  • 2716
  • 2752
  • 3117
  • 2501
  • 2710
  • 2717
  • 2810
  • 3119
  • 2505
  • 2711
  • 2732
  • 2820
  • 3130
  • 2620
  • 2712
  • 2736
  • 2830
  • 2632
  • 2713
  • 2742
  • 2860
  • 2640
  • 2714
  • 2743
  • 2870
  • 2670
  • 2715
  • 2750
  • 2910


Our grips and fixtures can be adapted to fit onto and be compatible with Instron test machines including the following models:

  • e1000
  • 3345
  • 5943
  • 5969
  • 5988
  • e3000
  • 3366
  • 5944
  • 5981
  • 5989
  • e10000
  • 3367
  • 5965
  • 5982
  • 8501
  • 3342
  • 3369
  • 5966
  • 5983
  • 8801
  • 3343
  • 3382
  • 5967
  • 5984
  • 8872
  • 3344
  • 5942
  • 5968
  • 5985
  • 8874


Obsolete models such as those listed below can also be outfitted with our grips and fixtures.

  • 3384
  • 4469
  • 5543
  • 5843
  • 1026
  • 4201
  • 4481
  • 5544
  • 5844
  • 1122
  • 4202
  • 4482
  • 5548
  • 5848
  • 1123
  • 4204
  • 4483
  • 5564
  • 5865
  • 1125
  • 4206
  • 4484
  • 5565
  • 5866
  • 1126
  • 4208
  • 4485
  • 5566
  • 5867
  • 1127
  • 4210
  • 4486
  • 5567
  • 5869
  • 1128
  • 4301
  • 4487
  • 5569
  • 5881
  • 1130
  • 4302
  • 4488
  • 5581
  • 5882
  • 1131
  • mini-44 (MN44)
  • 4489
  • 5582
  • 5884
  • 1132
  • 4411
  • 4500
  • 5583
  • 5885
  • 1133
  • 4442
  • 4501
  • 5584
  • 5885H
  • 1134
  • 4443
  • 4502
  • 5585
  • 5887
  • 1135
  • 4444
  • 4505
  • 5585H
  • 5888
  • 1137
  • 4464
  • 4507
  • 5586
  • 5889
  • 6021
  • 4465
  • 4508
  • 5587
  • TT/1100
  • 6022
  • 4466
  • 4510
  • 5588
  • TM/1100
  • 6025
  • 4467
  • mini-55 (MN55)
  • 5589
  • 1000
  • 6027
  • 4468
  • 5542
  • 5842
  • 1011


Talk with one of our Grip specialists

With such a large variety of choices (styles options capacities types) of grips and test fixtures available it can be frustrating to spend the time required to find your best solution. Let us help. It usually takes fifteen minutes or less to identify the best solution for you after you connect up with our test accessories engineers.

TestResources has been designing and manufacturing grips fixtures and universal test machines for almost 20 years. Our unique approach to design and manufacturing has allowed us to solve the testing challenges of thousands of customers around the world.

Why buy grips for your Instron test machine from TestResources?

  • Over 300 different models
    • 75 different tensile grips
    • Inexpensive compression platens
    • 100 different flexural bend fixtures to match all the ASTM standards
    • 30 different puncture fixtures
    • Extensometers
    • Chambers
    • Shear Peel and more fixtures
  • Custom engineered solutions
  • Application support from a grip engineer
  • Low price leaders