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Shoulder Screws.

Shoulder Screws

What are Shoulder Screws?

Shoulder Screws are fasteners with a large unthreaded shoulder below the head of the screw. The unthreaded portion of a shoulder screw is precision machined to a very high tolerance, and only the tip of the screw is threaded. Shoulder Screws are typically used where accurate rotation or sliding is essential.

Shoulder Screws are widely used in a range of industries - applications can include bearings pins, die/punch works, pulley shafts or any shaft where accurate rotary movement is a necessity.

Shoulder Screws are sometimes known interchangeably as Shoulder Bolts. Shoulder Screws can also be referred to as Stripper Bolts. Stainless Steel Shoulder Screws are generally regarded as being more accurate, reliable and boast a superior running life in comparison to Stripper Bolts.

AMPG Shoulder Screw Manufacture Process.

Accu's range of AMPG Precision Stainless Steel Shoulder Bolts are fully manufactured in just one process, which eliminates the need for any secondary operations such as thread rolling, slot cutting or drive broaching, and ensures that our components are manufactured to the highest levels of concentricity. AMPG Shoulder Bolts are manufactured from DFARS compliant materials and can be provided with full material certificates on request.

All of Accu's AMPG Shoulder Screws are manufactured using high-precision Swiss lathes to achieve extremely high shoulder tolerances. Each Shoulder Bolt is then carefully cleaned and packaged for delivery. Non-standard dimensions and additional materials are also available on customer request.

Metric Shoulder Screw Sizes.

Metric Shoulder Screws are manufactured in Metric Thread Sizes from M2 to M20, with relative Shoulder Diameters ranging between 3mm and 24mm and Shoulder Length sizes from 2mm to 120mm.

Imperial Shoulder Screw Sizes.

Accu's Imperial Shoulder Screws are manufactured in sizes ranging from No.2 to 7/8, with relative Shoulder Diameters from 3/32 to 1.1/2 Inch, with various Shoulder Length sizes across the range.

Shoulder Screw Materials.

Accu's Shoulder Bolt range is available in various grades of Stainless Steel, but a number of Shoulder Screws within this range can also be manufactured in thermoplastic PEEK. For other materials and grades, please check the specific product pages or contact our team. Features such as Thread Locking Patches and Chemical Blackening are also available as part of our standard stainless steel range.

Shoulder Screw International Standards.

The Shoulder Screw machining process allows for a shoulder tolerance of +0.000/-0.025mm and a general tolerance of +/-0.13mm. If your application requires greater tolerances, we’re able to quote for special manufacture on a case by case basis.

Shoulder Bolt Quality, Certifications and Material Traceability.

Material certificates for Shoulder Screws can be provided free of charge with large quantities and at a small premium for lower quantity orders. All Accu engineering components are RoHS compliant and come with a free certificate of conformity as standard.

Custom Manufactured Shoulder Screws.

Accu can custom manufacture bespoke Shoulder Bolts to exact customer specifications on request. If you require non-standard dimensions, a specialist drive-type, or a custom modification, please Contact us or submit a technical drawing to MADEbyACCU to receive a quotation. Having a component manufactured to your exact specifications is an excellent way to ensure peace of mind when incorporating Accu Shoulder Bolts into your design.

Bespoke Shoulder Screws Manufacture.

High precision, bespoke manufacture of Shoulder Screws to customer specification. State of the art facilities specialising in both small batch prototyping and large scale manufacture.

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