Value Collection 592479BR Hex Socket Cap Screw 7/8-9 Unc

Product Description

The VALUE COLLECTION 592479BR is a hex socket cap screw designed for high-strength fastening applications where a clean, low-profile head and internal hex drive are required. Sized at 7/8-9 UNC thread with a 3.5-inch length under head, this fastener is partially threaded and machined from 18-8 austenitic stainless steel (Material Grade A2), providing corrosion resistance in wet or chemically active environments. The 3/4-inch hex drive accepts standard hex keys and Allen-style drive tools. It carries a bright, uncoated finish and conforms to ASME/ANSI B18.3 and ASTM F837 standards. Fabricators, millwrights, pipefitters, and maintenance technicians install this type of fastener across a wide range of structural and mechanical assemblies.

This screw is suited for use in industrial, commercial, and mechanical applications where a coarse 7/8-9 UNC thread pattern is specified. Partial threading allows for shank bearing load in clearance-hole assemblies, making it appropriate for flanged connections, machinery frames, equipment mounting, and structural bracketing. The stainless steel construction makes it a common choice in food processing, marine, and outdoor service environments where carbon steel fasteners would corrode.

Key Features

• 7/8-9 UNC coarse thread for standard American inch fastener applications
• 3.5-inch length under head with partial threading for shank-bearing clearance-hole installations
• 18-8 austenitic stainless steel, Material Grade A2, for corrosion resistance
• 3/4-inch internal hex drive for use with standard hex keys or Allen drivers
• Bright, uncoated finish — no plating to compromise dimensional tolerances
• Conforms to ASME/ANSI B18.3 and ASTM F837 fastener standards

Compatibility

Designed as an OEM-style and general-purpose replacement or new-installation hex socket cap screw for any application specifying a 7/8-9 UNC partially threaded socket head cap screw per ASME/ANSI B18.3 or ASTM F837.

Installation Notes

Installation is performed by qualified trades including millwrights, pipefitters, and mechanical maintenance technicians using a 3/4-inch hex key or T-handle Allen driver. Verify thread engagement depth and clearance hole sizing per applicable engineering drawings before installation. Do not exceed the fastener's rated proof load; apply torque gradually using a calibrated torque wrench where load specifications are defined by the assembly designer. Inspect mating threads for damage or contamination before assembly.