Value Collection 353-0406-01 Button Socket Cap Screw 1/4-20

Product Description

The VALUE COLLECTION 353-0406-01 is a button socket cap screw designed for fastening applications that require a low-profile head and a secure, high-torque drive. Built from alloy steel with a black oxide finish, this fastener delivers corrosion resistance and a clean appearance suitable for exposed or semi-exposed assemblies. The 1/4-20 thread size and 3/8-inch length under head make it a compact, fully threaded option. Drive engagement is via a Torx Plus IP27 socket, which reduces cam-out and allows higher torque transfer compared to standard hex drives. Hardness is rated 39-44 HRC, meeting ASTM F835 and ANSI/ASME B18.3 standards.

This screw is appropriate for mechanical assemblies, machine guarding, equipment panels, and general industrial fastening where a low-profile button head is required. The black oxide finish suits applications where minimal reflectivity or a uniform dark appearance is preferred. Fully threaded along the 3/8-inch shank, this fastener engages threaded holes or nuts completely over its entire grip length. It is used across manufacturing, maintenance, and fabrication settings by machinists, millwrights, and general maintenance technicians.

Key Features

• Alloy steel construction rated 39-44 HRC for high shear and tensile strength
• Torx Plus IP27 drive reduces cam-out and supports higher installation torque
• Black oxide finish provides mild corrosion resistance and low-reflectivity appearance
• Fully threaded 3/8-inch length under head for complete thread engagement
• UNRC thread class 3A for precise fit and consistent assembly
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a standard 1/4-20 UNRC button socket cap screw suitable for tapped holes and threaded assemblies requiring a low-profile head and Torx Plus IP27 drive tool.

Installation Notes

Installation requires a Torx Plus IP27 driver or bit; do not substitute a standard Torx T27 bit, as the Torx Plus profile differs and may damage the drive recess. De-energize or lock out any machinery before servicing fastened assemblies. Verify thread engagement depth and mating thread condition before final torque. Follow applicable mechanical and equipment manufacturer specifications for torque values.