S-92949A843 1/4"-28 x 7/8" ASME B18.3, ASTM F879 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
- Exceptional thread precision with Class 3A fit and UNF fine threading ensures reliable, vibration-resistant connections
- High tensile strength of 70,000 psi provides dependable load-bearing capacity for demanding applications
- Easy installation and removal with hex drive design, reducing assembly time and tool slippage
- Fully threaded shank offers maximum grip and uniform stress distribution along the entire length
- Rounded button head profile delivers a low-profile, aesthetically pleasing finish while minimizing snagging
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for guaranteed quality and safety
Professional Applications & Engineering Value
This 18-8 stainless steel rounded head screw is engineered to address critical fastening challenges in precision industries. The Class 3A UNF fine thread and hex drive design ensure secure, repeatable installations in applications where vibration resistance and exact alignment are paramount. The passivated finish enhances the natural corrosion resistance of stainless steel, making it suitable for electronics, medical devices, and outdoor equipment exposed to moisture or chemicals. With a 70,000 psi tensile strength and fully threaded construction, it distributes clamping force evenly, reducing the risk of joint failure in assemblies requiring high reliability and durability.
Specification Summary & Compliance
This screw features a 1/4"-28 UNF fine thread with Class 3A fit, ensuring precise dimensional accuracy per ASME B18.3 specifications. It is fully threaded with a length of 7/8" and manufactured from 18-8 stainless steel with a passivated surface treatment. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.
