Value Collection 353-0510-01 Button Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION 353-0510-01 is a button socket cap screw designed for applications where a low-profile fastener head and high-strength alloy steel construction are both required. This fully threaded fastener measures 5/16-18 thread size with a 5/8-inch length under head and features a Torx Plus IP40 drive recess. The black oxide finish provides mild corrosion resistance and reduces surface glare. Hardness is rated at 39-44 HRC per ASTM F835, making this screw suitable for medium-to-high clamping force assemblies. It is installed by machinists, millwrights, maintenance technicians, and field service professionals across industrial, mechanical, and equipment fabrication settings.

This button cap screw is used in machine assemblies, equipment panels, fixtures, and mechanical enclosures where a domed low-profile head is preferred over a flat or hex head. The 5/16-18 UNC thread form and Class 3A thread fit make it compatible with standard tapped holes in ferrous and non-ferrous assemblies. Typical applications include securing guards, brackets, and housings in light to medium industrial machinery. The black oxide finish is common in applications where a non-reflective surface finish is preferred and moderate indoor corrosion resistance is acceptable.

Key Features

• Torx Plus IP40 drive reduces cam-out and allows higher torque transfer compared to standard hex socket drives
• Button head profile provides a low-profile, rounded top surface suitable for flush or near-flush installations
• Alloy steel construction with 39-44 HRC hardness per ASTM F835 for reliable clamping strength
• Black oxide coating offers mild corrosion resistance and a non-reflective matte finish
• Fully threaded 5/16-18 UNC right-hand thread with Class 3A fit for consistent engagement in standard tapped holes
• Conforms to ANSI/ASME B18.3 dimensional standards

Compatibility

Designed as a standard-dimension replacement or new-installation fastener for any 5/16-18 UNC tapped hole requiring a button socket cap screw per ANSI/ASME B18.3 specifications.

Installation Notes

Installation requires a Torx Plus IP40 driver bit. Ensure the mating tapped hole is clean, properly sized, and free of debris before driving. Do not exceed the torque rating appropriate for the alloy steel grade and thread engagement depth of the specific assembly. Black oxide finish is not a substitute for plated or coated fasteners in wet or outdoor environments where extended corrosion resistance is required.