S-90275A835 10-32 x 1 1/4" ASME B18.6.3 Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Precise flush mounting achieved through standard 82° countersink angle and flat head design
• High tensile strength rating of 60,000 psi ensures reliable performance under mechanical stress
• Fine UNF threading provides superior holding power and vibration resistance compared to coarse threads
• Class 2A thread fit guarantees consistent, reliable engagement with mating components
• Full threading along 1-1/4" length enables maximum adjustability and secure fastening depth
• Rockwell B70 hardness maintains thread integrity and prevents stripping during installation

Professional Applications & Engineering Value

These 10-32 UNF flat head screws deliver exceptional engineering value in applications where flush surface mounting is critical. The zinc-plated steel construction provides essential corrosion protection for industrial equipment, machinery assemblies, and electronic enclosures exposed to moderate environmental conditions. The fine UNF threading offers superior resistance to vibrational loosening compared to coarse-thread alternatives, making these slotted flat head screws ideal for precision assemblies in manufacturing, automotive, and aerospace applications. The combination of 60,000 psi tensile strength and Rockwell B70 hardness ensures these fasteners maintain clamping force under dynamic loads while preventing thread deformation during repeated installation cycles.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerances for consistent performance. These 1-1/4" fully threaded screws feature standard 82° countersink angle and right-hand UNF fine threading. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures safe use across global industrial markets.