Fairfield Industries FAST-LOCK Quick-Release Pull Pin
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Pull Pin
Pull Pin with
Lock-out Feature
Pull Pin with Clamping Feature
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Custom Design - Prototype Service - Capabilities
Custom Design

We offer a 3-Way Partnership in designing your unique applications for the FAST-LOCK Quick-Release Pull Pins.

 Engineering, Production, You-Arrows


Our Engineering and Production experts will partner with you in creating the most cost-effective design, which fulfills your requirements. We will guide your new design from prototype through production, measuring against our high quality standards at each step in the process.

This 3-Way Partnership ensures that your new design will meet all fit, form and function demands of your application. Our specialization in this industry permits us to offer you the best in design and cost-effectiveness.

Lock-out Pull Pin assembly Fairfield Industries

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Prototype Service

Call on us at Fairfield Industries not only to partner with you in designing your unique application of the
FAST-LOCK Quick-Release Pull Pin, but also to produce the prototype of that innovative design.

Test the solution before we begin production.

Our 3-Way Partnership with you continues into the prototype stage, involving all of the Fairfield
Industries' expertise, in arriving at the ideal solution to your project.

The successful prototype serves as our master design, when production of your order begins. We
faithfully measure production results against the original design and prototype, to ensure that the
accuracy and performance of your FAST-LOCK is precisely the quality that you expected.

Test Drawing of Fixture Fairfield Industries

Figure 1 Drawing of Fixture


Our Capabilities

Our capability is limited only by your imagination!

Bring us your issues and questions! We will work with you to arrive at a cost-effective solution!

We specialize in high quality, full production runs of 1,000 or more.

Shipment can occur all at once, or in stages, as your requirements dictate.

We are specialists in the TOP QUALITY production of the FAST-LOCK concept.

Challenge our Engineering and Production staffs, to create the innovative solution for which
you are searching.

Quick Release Pull Pin Fiarfield Industries Quick Release Pull Pin Fairfield Industries

(For an up close view of these products, click on the photo)


Pin Specifications along with Experimental Shear Strength of Pins
Pin Specification Experimental test Shear Stress = P/A
Part No. Diameter Cross Section Area Length Material Ultimate Load, lbs Ultimate Shear Stress PSI
K101 0.375" 0.295 in2  2.75" 1038 CR 4975 45045
K101A 0.5" 0.393in2  2.75" 1038 CR 9170 46700
K101AT 0.5" 0.393in2  2.875" 1038 CR 9040 46042
K101E 0.5" 0.393 in2  3.5" 1038 CR 10364 52762
K101ESP 0.635" 0.499in2  3.5" 12L15 15920 50271
K1011Q 0.25" 0.196 in2  2.75" 1038 CR 2984 60784
Theoretical calculations are completed as a comparison to test values. A comparison of the two data sets is shown below. 
Comparison of Experimental and Theoretical Ultimate Shear Strength
Ultimate Utimate Shear Stress = P/A Percentage Difference
Pin Tensile Strength in  PSI Shear Stress   PSI Exp. Ult.Shear Stress, PSI %
K101 76000 43320 45045 3.98
K101A 76000 43320 46700 7.80
K101AT 76000 43320 46042 6.28
K101E 76000 43320 52782 21.84
K101ESP 78000 43320 50271 13.07
K1011Q 76000 43320 60784* 40.31
 *Test done using 7/16" loading block.
Call on the expertise of Fairfield Industries!