Value Collection 350-0448-61 Socket Cap Machine Screw

Product Description

The VALUE COLLECTION 350-0448-61 is a partially threaded 1/4-20 socket cap head machine screw in 3-inch length, designed for applications requiring a Torx T30 drive. Manufactured from alloy steel with a black oxide finish, this fastener provides corrosion resistance and reduces light reflection in finished assemblies. It meets ANSI B18.3, ANSI B18.8.2, ANSI B2.2, and MS16555 standards, making it suitable for precision mechanical assemblies, tooling fixtures, and general industrial fastening tasks. Machinists, millwrights, and maintenance technicians commonly specify this screw type where a tamper-resistant or torque-controlled drive is preferred over a standard hex or Phillips configuration.

This screw is suited for use in metal fabrication, machine building, and industrial maintenance applications. The 1/4-20 thread size and 3-inch length make it a common choice for attaching brackets, guards, and structural components in equipment requiring partial thread engagement for precise clamping. The black oxide finish is appropriate for use in environments where light lubrication is applied post-installation to extend surface life. A minimum order quantity of 100 pieces applies, making this item appropriate for shop stock, maintenance kits, or production line use.

Key Features

• 1/4-20 thread size, 3-inch length under head for deep fastening applications
• Partially threaded shank provides controlled clamping and prevents thread engagement through the full grip length
• Torx T30 drive reduces cam-out and supports higher torque application compared to Phillips or slotted drives
• Alloy steel construction for high tensile strength in mechanical and industrial assemblies
• Black oxide finish for mild corrosion resistance and low-reflectivity surface treatment
• Meets ANSI B18.3, ANSI B18.8.2, ANSI B2.2, and MS16555 standards

Compatibility

Designed as a standard 1/4-20 partially threaded socket cap head machine screw compatible with any tapped hole or threaded insert conforming to 1/4-20 UNC thread specifications per ANSI B2.2.

Installation Notes

Installation should be performed by qualified machinists or maintenance technicians using a calibrated Torx T30 bit or driver rated for the required torque load. Ensure the mating threaded hole is clean and free of debris before installation. Apply a thread lubricant or anti-seize compound as appropriate for the service environment to prevent galling in alloy-to-alloy installations. Do not use impact drivers without torque-limiting attachments, as overtorquing alloy steel fasteners at this diameter can cause thread stripping or fastener fracture.