Value Collection R57001045 Hex Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION R57001045 is a hex socket cap screw designed for applications requiring a secure, high-strength threaded fastener. It features a 5/16-18 UNC thread size and measures 8 inches in length under the head. The drive type is hex with a 1/4-inch drive size, compatible with standard Allen wrenches and hex keys. Constructed from 18-8 stainless steel with a bright, uncoated finish, this fastener offers corrosion resistance suitable for general industrial, mechanical, and maintenance applications. Machinists, maintenance technicians, and trade professionals install this type of fastener in a wide range of assemblies.

This hex socket cap screw is used in residential, commercial, and industrial settings where a recessed-drive fastener is needed to secure components with limited wrench clearance. The 5/16-18 UNC thread pattern is a standard coarse-thread designation widely used in machinery, equipment frames, brackets, and structural assemblies. The 8-inch under-head length makes it suitable for thicker material stacks or deep-clearance installations. The uncoated 18-8 stainless steel construction resists rust and mild chemical exposure without additional surface treatment.

Key Features

• 5/16-18 UNC coarse-thread pattern for broad compatibility with standard tapped holes
• 8-inch length under head for deep-clearance and thick-stack fastening applications
• 1/4-inch hex drive accepts standard Allen wrenches and hex keys
• 18-8 stainless steel construction provides corrosion resistance without coatings
• Bright, uncoated finish — no added platings or surface treatments that could alter dimensional tolerances

Compatibility

Designed as a standard 5/16-18 UNC hex socket cap screw for use in any application requiring this thread size and an 8-inch under-head length in 18-8 stainless steel.

Installation Notes

Install using a 1/4-inch hex key or Allen wrench of appropriate length and quality for the required torque. Confirm the mating tapped hole is 5/16-18 UNC and free of debris before installation. Avoid cross-threading by hand-starting the fastener before applying tool torque. When installing stainless steel fasteners into stainless steel tapped holes, apply an appropriate anti-seize compound to reduce the risk of galling.