Mil-Spec stock springs available in the UK from Lee Spring

Lee Spring MIL-SPEC springs adhere to the United States Defence Standard and have been used in America to help achieve standardisation objectives set by the U.S. Department of Defence. This includes high-precision designs which meet strict technical requirements to be used in a multitude of Military and Aerospace applications and are referenced all around the world.

The MIL-SPEC range is available in four AS24585 and AS24586-approved materials. These include Uncoated Music Wire, Cadmium-Plated Music Wire, Zinc-Plated Music Wire, and Corrosion-Resistant Stainless Steel 302, giving them the strong and durable, yet flexible qualities needed in the industry.

They are known interchangeably as "military standards", "MIL-SPEC", "MIL-STD", or "MilSpecs". These high-precision designs meet stringent technical requirements and are used in a multitude of Military and Aerospace applications, both defence and non-defence related on a global basis. MIL-SPEC springs are increasingly specified by other non-defence government organisations, technical organisations, and highly regulated industries because of the high level of standardisation and quality inherent in these products.

Lee Spring has adapted some of its processes to adhere to the new MIL-SPEC designs. The standard for compression springs for loads below 20lbs used to be MS24585, and is now AS24585. The MIL-SPEC standard for extension springs for loads below 30lbs is AS24586; this was formerly MS24586.

All MIL-SPEC springs are available in the four authorised AS24585 and AS24586 materials: Uncoated Music Wire per ASTM A228; Cadmium-Plated Music Wire in accordance with SAE-AMS-QQ-P-416, Type II, Class 2; Zinc-Plated Music Wire in accordance with ASTM B633, Type II, Fe/Zn5; Corrosion-Resistant Stainless Steel 302 per ASTM A313 with passivation treatment in accordance with ASTM A967 or AMS2700. DFARS Compliant Stainless Steel included in Lee Spring ex-stock.

Further information on the MIL-SPEC range and other Lee Spring products can be found on the website at www.leespring.co.uk.