Value Collection 721344BR Flat Socket Cap Screw 1-1/4-7 X 6 in

Product Description

The VALUE COLLECTION 721344BR is a flat socket cap screw designed for high-load fastening applications where a flush or countersunk head profile is required. Built from alloy steel with a black oxide finish, it offers solid corrosion resistance and surface hardness suitable for demanding industrial and mechanical assemblies. The screw features an 82-degree flat head, a 7/8-inch hex socket drive, and a 1-1/4-7 UNC thread with partial threading along its 6-inch overall length. Installation requires a hex key or socket driver of the appropriate size. This fastener meets ASME/ANSI B18.3 and ASTM F835 standards.

This flat socket cap screw is suited for use in machinery, tooling fixtures, structural assemblies, and equipment where a low-profile head must sit flush with or below the mating surface. The partially threaded shank allows for controlled clamping force and is appropriate for applications where the unthreaded portion must pass through a clearance hole before engaging a tapped bore. Machinists, millwrights, and maintenance technicians commonly install this type of fastener in fabrication and heavy equipment environments.

Key Features

• 82-degree flat head seats flush in countersunk holes for a low-profile assembly
• 7/8-inch hex socket drive for high-torque installation with standard hex keys or socket tools
• Alloy steel construction provides high tensile strength for demanding load applications
• Black oxide finish offers moderate corrosion resistance and reduces light reflection
• Partially threaded shank for precise clamping in clearance-and-tapped-hole configurations
• Conforms to ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or standard replacement fastener for applications requiring a 1-1/4-7 UNC flat socket cap screw with a 6-inch overall length in alloy steel construction.

Installation Notes

Installation should be performed by a qualified machinist, millwright, or maintenance technician using a properly sized 7/8-inch hex key or socket driver. De-energize and lock out all equipment before fastener installation or removal per applicable OSHA lockout/tagout procedures. Ensure the mating tapped hole is clean and free of debris, and that the countersink angle matches the 82-degree head geometry before seating the fastener. Do not substitute a mismatched drive size, as this can round the socket or damage the fastener head.