S-96242A618 1/4"-28 x 2 3/4" 12-Point Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 450 Stainless Steel construction for long-term reliability in harsh industrial environments
• Superior torque transmission through the external 12-point drive design, preventing tool slippage during high-torque applications
• Enhanced load distribution from the integrated flange, reducing surface pressure and preventing material damage
• Precise thread engagement with Class 3A thread fit ensuring consistent, vibration-resistant fastening in critical assemblies
• High mechanical strength delivering 170,000 PSI tensile strength and Rockwell C37 hardness for demanding applications
• Optimized thread design with UNF fine threading providing superior resistance to loosening under dynamic loads
• Versatile partial threading allowing for both secure clamping and adjustable positioning in assembly operations

Professional Applications & Engineering Value

This 12-point flanged screw in 450 Stainless Steel addresses critical engineering challenges in heavy machinery, automotive, and aerospace applications where vibration resistance and corrosion protection are paramount. The UNF fine threading and Class 3A thread fit ensure precise engagement that maintains integrity under constant stress cycles, while the external 12-point drive delivers maximum torque transfer without cam-out failures. The integrated flange eliminates the need for separate washers, streamlining assembly while providing superior clamping force distribution. With 170,000 PSI tensile strength and Rockwell C37 hardness, this fastener withstands extreme mechanical loads while the partial threading allows for flexible adjustment in complex assemblies requiring both fixed and variable clamping points.

Specification Summary & Compliance

Manufactured to precise Class 3A thread tolerances with UNF fine threading (1/4"-28) and right-hand thread direction. The screw features a 5/16" external 12-point drive with 2-3/4" length and 33/64" flange diameter. Complies with ASME/ANSI standards for inch-series fasteners and meets industry requirements for heavy-duty industrial applications. Material composition and manufacturing processes adhere to RoHS and REACH environmental compliance standards.