Value Collection 581636PR Hex Socket Cap Screw 9/16-18 Unf

Product Description

The VALUE COLLECTION 581636PR is a fully threaded hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, industrial equipment, and structural connections. Manufactured from alloy steel with a black oxide finish, this fastener delivers reliable clamping force and moderate corrosion resistance in dry or lightly oiled environments. The 9/16-18 UNF thread form provides a fine-pitch engagement suited to precision load applications. Drive is a 7/16-inch hex socket, compatible with standard Allen keys and socket drivers. Weighing 0.01 pounds, the screw is sized for controlled torque applications where thread engagement and material strength are primary concerns.

This cap screw is suited for use in machinery frames, tooling fixtures, automotive components, and fabricated steel assemblies where a recessed drive head is required to maintain a flush or low-profile surface. The fine UNF thread series makes it appropriate for applications requiring precise adjustment or where vibration resistance is needed. Licensed tradespeople, millwrights, and mechanical contractors commonly specify this fastener type when working to ASME and ASTM standards on production or maintenance work.

Key Features

• 9/16-18 UNF fully threaded profile for fine-pitch, high-strength engagement
• 1-3/4 inch length under head provides substantial grip length for thick material stacks
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide finish offers mild corrosion resistance and reduces light reflection
• 7/16-inch hex socket drive accepts standard Allen wrenches and hex bit drivers
• Conforms to ASME/ANSI B18.3 dimensional standards for interchangeability

Compatibility

Designed as an OEM-style replacement or standard-fit fastener for any application specifying a 9/16-18 UNF hex socket cap screw per ASME/ANSI B18.3 and ASTM A574.

Installation Notes

Installation is performed with a 7/16-inch hex key or socket bit driver. Always de-energize and lock out equipment before replacing fasteners in mechanical assemblies. Verify hole thread class and condition before installation to ensure full engagement. Follow applicable torque specifications from the equipment manufacturer or relevant ASME standards, as no torque values are supplied with this fastener.