S-91746A478 1/4"-28 x 1 1/2" Thumb Screws
Thumb Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread 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, ideal for harsh industrial environments
- Excellent hand-tightening capability thanks to the knurled round head design for secure grip without tools
- Precise thread engagement with UNF fine thread and Class 2A fit ensuring reliable fastening in critical applications
- High mechanical strength with 80,000 psi tensile strength and Rockwell B83 hardness for long-term durability
- Full-length threading provides maximum adjustability and secure holding power across the entire screw length
- Narrow profile design allows for installation in tight spaces while maintaining easy manual operation
- Environmental compliance with RoHS 3 and REACH regulations for safe use across various industries
Professional Applications & Engineering Value
This 18-8 stainless steel thumb screw delivers exceptional performance in demanding industrial settings where corrosion resistance and manual operation are critical. The knurled head texture provides positive grip even with gloved hands, eliminating the need for tools in applications requiring frequent adjustments. The UNF fine thread configuration offers superior vibration resistance compared to coarse threads, making it ideal for precision equipment, electronic enclosures, and machinery where secure fastening is paramount. The combination of high tensile strength and full threading ensures reliable performance in assembly lines, maintenance operations, and OEM applications where durability and ease of use are equally important.
Specification Summary & Compliance
This thumb screw features precision 1/4"-28 UNF fine thread with Class 2A tolerance for consistent fit and performance. Manufactured from 18-8 stainless steel with full threading along the 1-1/2" length, it maintains dimensional accuracy per industry standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial applications worldwide.
