S-92949A338 6-40 x 3/8" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws
Stainless Steel Button Head Hex-Drive Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- 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 and passivated finish, ideal for harsh environments.
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity and joint integrity under stress.
- Precision Class 3A thread fit provides consistent engagement and reduces the risk of cross-threading in assembly.
- Fine UNF threading (6-40) offers enhanced vibration resistance and improved clamping force in fine-pitch applications.
- Hex drive (5/64") design allows for high-torque installation with standard tools, minimizing slippage and tool wear.
- Fully threaded shank maximizes grip length and flexibility for varied material thicknesses.
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety regulations.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 6-40 UNF thread screws with a rounded button head and hex drive deliver exceptional performance in machinery, electronics, and precision equipment. The 18-8 stainless steel material combined with a passivated finish provides outstanding resistance to oxidation and chemical exposure, addressing common failure points in corrosive settings. With fine threading and Class 3A fit, these screws ensure tight, secure fastening in components subject to vibration, reducing maintenance needs and enhancing operational lifespan. Ideal for OEM assemblies and MRO use, they support efficient, repeatable installations while meeting rigorous ASME B18.3 specifications.
Specification Summary & Compliance
This screw features a 6-40 UNF fine thread with Class 3A tolerance for precise fit, a length of 3/8", and a rounded button head with 5/64" hex drive. Manufactured from 18-8 stainless steel with Rockwell B55 hardness and 70,000 psi tensile strength, it is fully threaded and right-hand oriented. Compliance includes ASME B18.3 for dimensional standards, RoHS 3 (2015/863/EU), and REACH (EC 1907/2006) for environmental safety.
