Value Collection 581494PR Hex Socket Cap Screw 3/8-24 Unf

Product Description

The VALUE COLLECTION 581494PR is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, machine components, and structural connections. Manufactured from alloy steel with a black oxide finish, this screw measures 2.75 inches in length under the head and accepts a 5/16 inch hex drive. It carries a 3/8-24 UNF thread specification, indicating a fine-thread profile suited for applications requiring precise clamping force and vibration resistance. It meets ASME/ANSI B18.3 and ASTM A574 standards, confirming compliance with recognized dimensional and mechanical property requirements for socket cap screws. Machinists, millwrights, and maintenance technicians are the primary installers.

This screw is used across a wide range of industrial, commercial, and mechanical service environments. The fine 3/8-24 UNF thread pitch makes it well suited for assemblies where controlled torque and tight thread engagement are critical, including machine tooling fixtures, hydraulic component mounting, and precision equipment frames. The partial threading and alloy steel construction support high tensile loads. The black oxide coating provides mild corrosion resistance and a low-reflectance appearance commonly required in production and maintenance settings.

Key Features

• 3/8-24 UNF fine-thread profile for precise clamping and vibration-resistant fastening
• 2.75 inch length under head suits medium-depth fastening applications
• 5/16 inch hex socket drive for use with standard hex keys and hex bit drivers
• Alloy steel construction provides high tensile and yield strength
• Black oxide finish offers mild corrosion resistance and reduced surface reflectance
• Meets ASME/ANSI B18.3 and ASTM A574 standards for dimensional accuracy and mechanical performance

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw for use in any application requiring a 3/8-24 UNF partially threaded fastener with a 5/16 inch drive.

Installation Notes

Installation is performed using a 5/16 inch hex key or socket drive. Power down and de-energize any equipment before accessing fastener locations on electrical or mechanical assemblies. Follow equipment manufacturer torque specifications and applicable codes such as ASME standards for the assembly type. Do not reuse fasteners that show signs of galling, thread damage, or deformation.