Value Collection 581909BR Hex Socket Cap Screw 1-1/4-12 Unf

Product Description

The VALUE COLLECTION 581909BR is a fully threaded hex socket cap screw designed for high-strength fastening applications where a recessed drive is required. Built from alloy steel with a black oxide finish, this cap screw measures 2 inches in length under the head and features a 7/8-inch hex socket drive. The 1-1/4-12 UNF thread form provides a fine-pitch engagement suited to applications requiring tight clamping force and resistance to vibration loosening. It meets ASME/ANSI B18.3 and ASTM A574 dimensional and mechanical standards. The black oxide coating offers mild corrosion resistance and reduces surface glare. Mechanical contractors, millwrights, and maintenance technicians commonly install this fastener in equipment assemblies and structural connections.

This cap screw is appropriate for heavy industrial, mechanical, and structural applications where a fine-thread alloy steel fastener is specified. The 1-1/4-12 UNF thread is commonly used in precision machinery, hydraulic components, and high-load bolted joints where fine thread engagement and tensile strength are critical. The recessed hex socket drive allows for installation in confined spaces where a wrench or bolt head clearance is limited.

Key Features

• 1-1/4-12 UNF fine-pitch thread for high clamping force and vibration resistance
• Fully threaded body along the 2-inch length under head
• 7/8-inch hex socket drive for use with standard hex keys or socket drivers
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide finish provides mild corrosion resistance and low-reflectance surface
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw for use in any application requiring a 1-1/4-12 UNF fully threaded alloy steel fastener with a 7/8-inch hex drive.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or maintenance technician using a properly sized 7/8-inch hex key or socket driver. Disengage all power, pressure, and stored energy from the assembly before removing or installing fasteners. Apply thread lubricant or thread-locking compound only as specified by the equipment manufacturer. Do not exceed the torque values specified by the equipment OEM or applicable fastener standard.