S-92845A537 1/4"-20 x 1/2" ASME B18.3 Set Screws

Set Screws

0658FA00031 Set Screws
0658FA00031 Set Screws

Image may differ from product. See technical specification for details.

Part No.
Part No. 0658FA00031
Equivalent to mcmaster :
92845A537

Basic Information

System of Measurement Inch

Head Parameters

Head Type Headless

Dimensions

Length 1/2"

Thread Parameters

Thread Type UNC
Thread Size 1/4"-20
Thread Diameter 0.25"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A

Tip & Drive Parameters

Tip Type Extended
Tip Length 0.067"
Tip Length Tolerance -0.005" to 0"
Tip Diameter 0.156"
Tip Diameter Tolerance -0.007" to 0"
Drive Style Hex
Drive Size 1/8"

Material & Strength

Material 18-8 Stainless Steel
Hardness Rockwell B80

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
Price available upon request. Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
  • Fast delivery
  • Enjoy discounts on bulk purchases
  • Secure Payment
  • Fast Global Shipping

Key Features & Benefits at a Glance

  • Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability.
  • Exceptional holding power ensured by Class 3A thread fit, providing tighter tolerances and reduced risk of loosening under vibration.
  • Enhanced grip and alignment from the extended tip design, which increases surface contact for more secure fastening.
  • Easy installation and removal with a 1/8" hex drive, allowing for efficient torque application in confined spaces.
  • High durability and strength backed by Rockwell B80 hardness, resisting wear and deformation in demanding applications.
  • Reliable performance in coarse thread applications using UNC 1/4"-20 threading, suitable for quick assembly and disassembly.
  • Compliance with industry standards including ASME B18.3, ensuring consistent quality and interchangeability.

Professional Applications & Engineering Value

This 1/4"-20 UNC Class 3A set screw is engineered to address common industrial challenges such as component slippage and corrosion-induced failure. Crafted from 18-8 Stainless Steel, it offers excellent resistance to rust and chemicals, making it ideal for machinery, automotive, and marine environments. The extended tip and coarse thread design provide superior bite and alignment, reducing the need for frequent retightening in high-vibration settings. By meeting ASME B18.3 standards and incorporating a hex headless drive, it ensures precise installation and long-term reliability, minimizing downtime and maintenance costs in industrial set screw applications.

Specification Summary & Compliance

This set screw features precise dimensions including a thread size of 1/4"-20 UNC with Class 3A thread fit for high accuracy, and an extended tip with diameter of 0.156" and length of 0.067" within specified tolerances. It complies with ASME B18.3 manufacturing specifications and is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental safety and regulatory adherence for global industrial use.

🔍
Cancel