Value Collection -40228-1 Hex Socket Cap Screw 5/16-24 Unf

Product Description

The VALUE COLLECTION -40228-1 is a hex socket cap screw designed for precision fastening applications requiring a compact, recessed-drive profile. Sized at 5/16-24 UNF with a 3/4-inch length under head, this fastener is fully threaded and driven with a 1/4-inch hex key. The alloy steel construction and black oxide finish provide a balance of tensile strength and moderate corrosion resistance. It meets ASME/ANSI B18.3 and ASTM A574 standards. Machinists, millwrights, maintenance technicians, and industrial assembly professionals commonly specify this style of cap screw where a flush or low-profile head is required.

This screw is well suited for machine assembly, fixture building, and mechanical maintenance tasks in industrial, commercial, and manufacturing environments. The fine-thread 5/16-24 UNF pitch provides stronger thread engagement and greater resistance to loosening under vibration compared to coarse-thread alternatives. It is sold in minimum order quantities of 50 and is a practical choice for both production-line use and service-shop inventory.

Key Features

• 5/16-24 UNF fine thread for high vibration resistance and precise clamping force
• Fully threaded 3/4-inch length under head maximizes thread engagement
• 1/4-inch hex socket drive for use with standard hex keys or Allen-type bit drivers
• Alloy steel construction per ASTM A574 for high tensile and proof-load strength
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Conforms to ASME/ANSI B18.3 dimensional standard

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for tapped holes requiring a 5/16-24 UNF fine-thread fastener in industrial and mechanical assembly applications.

Installation Notes

Installation is performed with a 1/4-inch hex key or socket bit driver. Verify the mating tapped hole meets 5/16-24 UNF thread specifications before installation. Apply appropriate thread lubricant or thread-locking compound as required by the application. Do not exceed the rated proof load of the fastener when torquing.