Value Collection -33709-2 Hex Socket Cap Screw 7/8-9

Product Description

The VALUE COLLECTION -33709-2 is a partially threaded hex socket cap screw designed for heavy-duty mechanical fastening applications. It features a 7/8-9 UNC thread size, a 4.5-inch length under head, and accepts a 3/4-inch hex drive. Constructed from alloy steel with a black oxide finish, this fastener delivers strong corrosion resistance and high tensile strength in demanding environments. It meets ASME/ANSI B18.3 and ASTM A574 standards, making it suitable for critical structural and mechanical assemblies. Licensed mechanics, maintenance technicians, and industrial tradespeople commonly specify this style of cap screw where high clamping loads are required.

This socket cap screw is appropriate for use in industrial machinery, structural assemblies, and equipment maintenance situations that demand a high-strength, partially threaded fastener. The black oxide coating provides mild corrosion protection and reduces light reflection, making it a common choice in both indoor mechanical and controlled-environment applications. It is sold individually, with a minimum order quantity of 5 units.

Key Features

• 7/8-9 UNC thread size for high-load fastening applications
• 4.5-inch length under head, partially threaded for precise clamping
• 3/4-inch hex socket drive for use with standard Allen keys or hex bit sockets
• Alloy steel construction meets ASTM A574 high-strength requirements
• Black oxide finish for mild corrosion resistance and reduced surface reflection
• Conforms to ASME/ANSI B18.3 socket screw standards

Compatibility

Designed as a standard ASME/ANSI B18.3-compliant hex socket cap screw suitable for use in industrial machinery, structural assemblies, and mechanical equipment requiring a 7/8-9 UNC partially threaded fastener.

Installation Notes

Installation should be performed by qualified maintenance technicians or millwrights using a calibrated 3/4-inch hex key or drive tool. Ensure mating threads and seating surfaces are clean and free of debris before installation. Always follow applicable industry torque guidelines for 7/8-9 UNC alloy steel fasteners per relevant ASME standards. De-energize and lock out any equipment before performing fastener service or replacement.