Taper Pins

Stanlok engineers have developed tooling and processes for machining long cylindrical parts. Our unique processes supply customers and competition with taper pin solutions every day! Stanlok custom machinery, along with state of the art CNC Swiss machinery, enable Stanlok to meet your special pin needs.

Select Your Type of Taper Pin Below

STANLOK TAPER PIN | IMPERIAL UNTHREADED

Imperial unthreaded taper pins run from the smallest diameter size number 7/0 (0.0625″) through the largest diameter size number 14 (1.523″). Commercial pins have a turned finish, precision class pins have a grind finish. Stanlok pins are manufactured to the ASME B18.8.2 standard and provide a self-holding taper of 0.250″ per 12.000″ of length. Stanlok has inventory for standard length pins from size #7/0 through #10 in steel and stainless steel. Stanlok manufactures to length for the larger diameter pins in sizes 11, 12, 13, and 14.

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IMPERIAL TAPER PIN | Small Sizes | Stock Lengths

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IMPERIAL TAPER PIN | Medium Sizes | Stock Lengths

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IMPERIAL TAPER PIN | Large Sizes | Stock Lengths

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IMPERIAL TAPER PIN THREADED

Imperial threaded taper pins with external threads provide a means for extracting the pin from the mating assembly. A nut of the correct thread size may be tightened on to the extended thread. This will lift or jack out the pin using the mechanical advantage of the thread as an incline plane. Stanlok threaded end pins are designed to withstand assembly impact without damaging the threads. This ensures ease of extraction in the future.

Taper Pin, Threaded, External, Stock Lengths and Make to Order Lengths

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METRIC TAPER PIN UNTHREADED

Metric unthreaded taper pins are produced by Stanlok to ISO 2339 (DIN 1) in sizes from 0.6 mm through 50 mm. Metric pins provide a self-holding taper of 1 mm per 50 mm of length. Type A pins are ground and have a surface finish Ra = 0.8 micro meter. Type B pins are turned and have a surface finish Ra = 3.2 micrometer. Common lengths include 4 mm for the smaller diameter pins through 200 mm for the largest diameter pins. Stanlok has inventory for some metric sizes and manufactures special sizes in one week or less.

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METRIC TAPER PIN EXTERNAL THREADED

Metric external thread taper pins are produced by Stanlok to ISO 8737 (DIN 7977) in sizes from 5 mm through 50 mm. The external thread provides a means for extracting the pin from the mating assembly. Standard pitch metric nuts in sizes from M5 through M36 are used with these pins for removal. The end of the pin has a diameter smaller than the thread to absorb assembly impact without impeding extraction of the pin in the future. These pins may be supplied in Type A and B for ground or turned surface finishes.

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METRIC TAPER PIN | THREADED | INTERNAL

Metric internal thread taper pins are produced by Stanlok to ISO 8736 (DIN 7978) in sizes from 6 mm through 50 mm. The internal thread provides a means for extracting the pin from the mating assembly using a pulling tool or slide hammer. The internal threaded pin can be used where the extended thread of an external threaded pin will cause interference. The standard internal thread range is from M4 through M24. These pins may be supplied in Type A and B for ground or turned surface finishes.

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MS24692 TAPER PIN | TAPERED | PLAIN

Military Standard (MS) plain taper pins are made by Stanlok in sizes #7/0 through #10 in common lengths from 0.375″ through 6.00″. MS24692 taper pins may be made from low carbon steel, alloy steel, or corrosion resistant steel to meet the appropriate tensile strength requirements. Cadmium plate finish per QQ-P-416, Type II, Class 2 may be applied to steel and alloy steel pins. Stainless steel pins are passivated per ASTM A380.

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AN386 TAPER PIN | THREADED | TAPER

Air Force-Navy Aeronautical Standard (AN) threaded taper pins are made by Stanlok to the AN386 standard. All pins are produced in our Worcester MA factory using raw material that is melted and made in the USA. Sizes include AN386-1 through AN386-10 with the dash 1 through dash 6 sizes being most popular. Lengths run from a number 6 through number 48 and external threads from #10-32 through 7/8-14. The self-holding taper is 0.500″ per 12.00″ except for the size 10 which is 0.516″ per 12.00″. AN386 taper pins can be supplied with or without wire or cotter pin holes in the threaded end.

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TAPER PIN | REAMERS

Stanlok supplies taper pin reamers for cutting the assembly hole to correctly seat the mating size pin. Taper pins have a self-holding angle which requires force to install and remove when properly seated. Taper pin reamers are made to exacting specifications and will ensure the correct assembly. Taper pin reamers are also useful for cleaning and deburring holes after removing old pins for maintenance or repair operations.

SPECIAL TAPER PINS

Stanlok is the one source for all of your specialty taper pin needs! If your needs are inch or metric based, require special materials or require non-standard dimensions, please send us an engineering drawing or customer specifications and we will develop a quote based upon your needs. If your requirements include DFARS or 100% Domestic material and made, we can comply with manufacturing done in our Worcester, MA facility.