Hi-Lok Go-No-Go Pin Protrusion Gauge 2-1522-B

Pin Protrusion Gauges (for Hi-Lok® & Hi-Tigue®) -Model 2-1522-B

Also known as Go-No-Go Gauges. Use these gauges for inspection of pins for correct grip length after installation. Includes gauges for 5/32″, 3/16″, 1/4″, 5/16″ and 3/8″.

The new Aerospace

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set is somewhat larger than its predecessor, and allows greater reach over collars with wide bases. The Max-Protrusion limits have been changed to allow slightly greater acceptance range.

To determine if the correct length pin has been installed, the tip of the pin protruding from the structure must fall between the recommended allowable maximum and minimum limits. Checking pin protrusion is easily accomplished with the proper Pin Protrusion Gauge. Distinct Gauge Sets are available for the Hi-Lok®/Hi-Tigue® system. Using the set for the fastening system, select the gauge for the pin diameter in question. If contact is made at the maximum limit, the pin should be removed and replaced with a shorter pin. If contact is not made at the minimum limit, the pin should be removed and replaced with a longer pin. Any protrusion between the upper and lower limit is satisfactory.

BLACK Gauge Set for Hi-Lok® and Hi-Tigue®

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Nominal Pin Diameter    Pin Protrusion Limits
Pin Dash #      Fraction   Decimal        Min        Max
-5                5/32″      0.1560       0.302

0.389

-6                3/16″      0.1875       0.315

0.402

-8                1/4″        0.2500       0.385

0.472

-10               5/16″      0.3125      0.490

0.577

-12               3/8″       0.3750       0.535

0.622

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SKINPINS

William Lees & Sons have been suppliers of top quality and competitively priced aircraft and sheet metal tooling components for over 30 years. Distributorships include US Industrial Tool, Sioux Tools, HS Tooling (Hi-Shear) – Please visit our site SKINPINS for more information and to download catalogues.

Our products and services, including our wide range of Skinpins (temporary fasteners), are used by leading aerospace companies including: Airbus; BAe Systems; British Airways; Short Brothers and Virgin Atlantic – as well as many others through sub-contractors and distributors. We also supply Formula 1, automotive, colleges and sheet metal industries. Furthermore, we are delighted to supply smaller businesses too, so don’t hesitate to get in touch to find out how we can help you.