Value Collection R82222669 Hex Cap Screw 5/16-18 X 3 in 18-8 Ss

Product Description

The VALUE COLLECTION R82222669 is a 5/16-18 x 3-inch hex head cap screw machined from 18-8 stainless steel and left uncoated for a clean, corrosion-resistant finish. The 5/16-18 thread designation indicates a 5/16-inch nominal diameter with 18 threads per inch on a Unified National Coarse (UNC) pitch. Length under head measures 3 inches. The 18-8 stainless alloy provides solid resistance to rust, oxidation, and mild chemical exposure, making this fastener well suited for applications where carbon steel would corrode. It is installed by maintenance technicians, millwrights, plumbers, HVAC mechanics, and electricians across a broad range of structural and mechanical assembly tasks.

This cap screw is appropriate for use in general mechanical assemblies, equipment frames, enclosures, brackets, and pipe support hardware in both residential and light commercial settings. Its UNC thread form is the standard coarse-pitch profile used across most inch-fastener applications in North American trade work, making it broadly interchangeable with OEM hardware of the same specification. The uncoated finish is suitable for indoor and moderate outdoor exposure where stainless steel alone provides adequate protection.

Key Features

• 5/16-18 UNC thread form — standard coarse pitch for broad interchangeability
• 3-inch length under head for applications requiring extended grip
• 18-8 stainless steel construction resists corrosion and oxidation without a protective coating
• Uncoated finish — no risk of coating delamination or chemical incompatibility
• Meets multiple MS military specifications covering dimensional and material requirements
• Sold individually with a minimum order quantity of 10 units

Compatibility

Manufactured to the following military standards: MS 34307-341D, MS 35307-303D, MS 35307-305D, MS 35307-306D, MS 35307-307D, MS 35307-308D, MS 35307-310D, MS 35307-312D, MS 35307-313D, MS 35307-314D, MS 35307-316D, MS 35307-318D, MS 35307-331D, MS 35307-334D, MS 35307-336D, MS 35307-338D, MS 35307-340D. Suitable as a direct dimensional replacement for any 5/16-18 x 3-inch UNC hex head cap screw calling out 18-8 stainless material.

Installation Notes

Install using a standard hex wrench, socket, or open-end wrench sized for a 5/16-inch hex head cap screw. Ensure mating threads are clean and free of debris before installation. When installing stainless fasteners, apply an appropriate anti-seize compound to prevent galling, which is common with stainless-to-stainless thread engagement. Follow applicable equipment manufacturer torque specifications and relevant codes such as NEC or IFGC where the fastener is used in regulated assemblies.