Value Collection 011611P Hex Socket Cap Screw 1/4-20 Unc

Product Description

The VALUE COLLECTION 011611P is a hex socket cap screw with a 1/4-20 UNC thread and a 3-1/2 inch length under head. It is partially threaded and driven with a 3/16 inch hex key. The fastener is manufactured from alloy steel and finished with a black oxide coating that provides mild corrosion resistance and reduces light reflection. It conforms to ASME/ANSI B18.3 and ASTM A574 standards, making it suited for structural and mechanical fastening applications. Machinists, millwrights, and maintenance technicians are the primary installers of this fastener type.

This cap screw is used in general industrial, mechanical, and machinery assembly applications where a flush or low-profile socket-drive fastener is required. The partial threading is appropriate for clamping applications where the unthreaded shank spans the joint interface. Typical uses include machine frames, jigs, fixtures, tooling plates, and equipment enclosures in both light and heavy manufacturing environments. The black oxide finish is compatible with oil-lubricated and dry indoor service conditions.

Key Features

• 1/4-20 UNC thread for compatibility with standard inch-series tapped holes
• 3-1/2 inch length under head for deep-reach fastening applications
• Partially threaded shank for clamping without thread engagement across the joint interface
• Alloy steel construction meets ASTM A574 mechanical property requirements
• Black oxide finish reduces surface reflectivity and provides light corrosion resistance when used with oil
• 3/16 inch hex drive for use with standard hex keys and Allen-type tools

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw for use in any 1/4-20 UNC tapped hole requiring a partially threaded alloy steel fastener with a 3-1/2 inch grip length.

Installation Notes

Installation requires a 3/16 inch hex key or socket bit. Ensure the mating tapped hole is clean and free of debris before driving. Power down and de-energize any equipment before accessing fastener locations on live machinery. Do not exceed the fastener's rated proof load, and apply thread lubricant where specified by the equipment manufacturer to achieve accurate torque-to-clamp-force results.