What is the purpose of the serrations on the flange?

The serrations on the flange are designed to bite into the mating surface. This helps to prevent the screw from loosening due to vibration, which is common in engine applications.

What does '5/16-18 x 1/2in' refer to?

This refers to the screw's dimensions. '5/16-18' indicates the thread diameter (5/16 inch) and the thread pitch (18 threads per inch). '1/2in' is the length of the screw from under the head to the tip.

What is the benefit of a flanged head screw?

A flanged head provides a larger bearing surface area compared to a standard hex head. This helps to distribute the clamping force over a wider area, reducing the risk of damaging the surface the screw is fastened into.

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Est. 1957

Specifications

Brand: S&S Cycle
Part #: 500-0744
UPC: 500-0744

S&S Cycle 5/16-18 x 1/2in Screw

Name: S&S Cycle 5/16-18 x 1/2in Screw
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-5-16-18-x-1-2in-screw-t14-662988
Price: 5.95 USD
Availability: BackOrder

$5.95

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S&S Cycle 5/16-18 x 1/2in Screw. A well-built hex head cap screw for engine components.

Key Features

Fits S&S Cycle 5/16-18 x 1/2in.
Hex head cap screw with a flanged head.
Serrations on the flange help prevent loosening.
Made from steel with a zinc-plated finish for corrosion resistance.

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About this part

Product Details

This is a S&S Cycle 5/16-18 x 1/2 inch hex head cap screw. It's a single component, designed for use in engine applications where a specific size and type of fastener is needed. The flanged head offers a larger bearing surface than a standard hex head, which can help distribute load more evenly and prevent damage to the mating surface. Serrations on the flange further help to resist loosening under vibration.

Constructed from steel and finished with a zinc plating, this screw offers a good balance of strength and corrosion resistance for many engine-related uses. The 5/16-18 thread size and 1/2 inch length are common dimensions, but it's important to confirm this is the exact fastener required for your specific repair or build.