Value Collection 011555BR Hex Socket Cap Screw 1-1/4-7 Unc

Product Description

The VALUE COLLECTION 011555BR is a hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. This screw features a 1-1/4-7 UNC thread size and a 2-1/2-inch length under head, making it suitable for thick material joints and heavy-duty bolted connections. Manufactured from alloy steel with a black oxide finish, it delivers enhanced corrosion resistance and a low-reflectance surface. The 7/8-inch hex drive socket ensures positive torque transfer during installation. It conforms to ASME/ANSI B18.3 and ASTM A574 standards. Machinists, millwrights, and maintenance technicians commonly install this fastener in equipment frames, fixtures, and machine bases.

This cap screw is suited for applications requiring a high-strength, flush-seated fastener in ferrous and non-ferrous assemblies. Typical use cases include machine tool mounting, structural steel connections, heavy equipment maintenance, and industrial fixture fabrication. The fully threaded shank provides full thread engagement across the clamped material stack, which is particularly useful in through-bolt configurations and tapped-hole assemblies where maximum holding strength is needed.

Key Features

• 1-1/4-7 UNC thread size for use in standard unified coarse thread tapped holes
• 2-1/2-inch length under head accommodates thick material stacks
• Fully threaded shank for maximum thread engagement in tapped blind or through holes
• Alloy steel construction meets ASTM A574 mechanical requirements for high-strength socket cap screws
• Black oxide finish provides mild corrosion resistance and reduces surface reflectance
• 7/8-inch hex drive socket compatible with standard hex keys and socket drive tools
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard-dimension hex socket cap screw per ASME/ANSI B18.3, compatible with any 1-1/4-7 UNC tapped hole application requiring an ASTM A574 high-strength alloy steel fastener.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a 7/8-inch hex key or socket drive tool. De-energize and lock out equipment before disassembling or reassembling any bolted joint per applicable OSHA lockout/tagout procedures. Apply thread lubricant or anti-seize compound as appropriate for the joint material and service environment. Do not impact-drive socket cap screws, as this can damage the internal hex socket and compromise fastener integrity.