Value Collection 581452PR Hex Socket Cap Screw 5/16-24 Unf

Product Description

The VALUE COLLECTION 581452PR is a hex socket cap screw designed for precision fastening in mechanical, industrial, and maintenance applications. It features a 5/16-24 UNF thread and measures 4 inches in length under the head with partial threading, making it well suited for joints where thread engagement depth and clamp load distribution matter. The alloy steel construction with a black oxide finish provides strength and moderate corrosion resistance. A 1/4-inch hex drive accepts standard hex keys and Allen drivers. This fastener is manufactured to ASME/ANSI B18.3 and ASTM A574 standards, confirming grade compliance for high-strength socket cap applications.

This screw is used across a wide range of trades and industries wherever a low-profile, high-strength threaded fastener is needed. Typical applications include machine assembly, equipment maintenance, jig and fixture fabrication, HVAC equipment mounting, and general mechanical service work. The fine 5/16-24 UNF thread pitch provides greater holding strength and finer adjustment than coarse-thread equivalents, making it a preferred choice in vibration-prone environments or where precise preload control is important. Installers working in tight clearances will appreciate the internal hex drive, which requires no external wrench access around the fastener head.

Key Features

• 5/16-24 UNF fine thread for higher clamp load and vibration resistance compared to coarse-thread equivalents
• 4-inch length under head with partial threading for proper load distribution in through-bolt and tapped applications
• Alloy steel construction meets ASTM A574 high-strength socket cap screw standard
• Black oxide finish provides mild corrosion and oxidation resistance while maintaining tight dimensional tolerances
• 1/4-inch hex socket drive compatible with standard hex keys and bit drivers
• Manufactured to ASME/ANSI B18.3 dimensional standard for consistent fitment

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for any tapped or through-hole application requiring a 5/16-24 UNF high-strength fastener.

Installation Notes

Installation is performed with a 1/4-inch hex key or Allen bit driver. Ensure mating threads are clean and free of debris before driving the fastener to prevent galling or cross-threading. Power down or de-energize any equipment before performing fastener service on live mechanical or electrical assemblies. Do not exceed the rated drive engagement depth for the hex socket to avoid rounding the drive recess.