S-91775A749 Length 1 1/4" Tapping Screws
Tapping Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
Installation & Application
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Key Features & Benefits at a Glance
- Superior corrosion resistance with Black-Oxide Steel coating, extending service life in demanding industrial environments.
- Efficient thread forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing assembly time and tooling costs.
- Precise 82° countersink angle ensures flush seating with the oval head for a smooth, professional finish and improved aesthetics.
- Optimized for 0.025" maximum drilling thickness in sheet metal, providing reliable performance in standard gauge applications.
- Phillips No. 2 drive offers secure bit engagement and reduces cam-out during installation for consistent torque application.
- Fully threaded shank maximizes grip length and pull-out resistance across the entire fastener length.
- Compliance with RoHS 3 and REACH regulations ensures environmental responsibility and global market acceptance.
Professional Applications & Engineering Value
These No. 10 thread forming screws are specifically engineered for sheet metal applications where reliable fastening and corrosion resistance are critical. The Black-Oxide Steel construction provides enhanced durability against oxidation, while the thread forming (A/AB) design displaces material to create strong, vibration-resistant threads without generating chips. This eliminates tap breakage concerns and ensures consistent performance in HVAC, electronic enclosures, and automotive assemblies. The Phillips oval head combines aesthetic appeal with functional countersinking, while the 12 TPI precision threading delivers optimal engagement in thin-gauge materials. These features collectively address common industrial challenges of thread stripping, corrosion-induced failure, and installation efficiency.
Specification Summary & Compliance
This No. 10 x 1-1/4" tapping screw features a 0.19" thread diameter with 12 TPI right-hand threading and fully threaded design. The oval head profile matches standard 82° countersink angles for proper seating. Manufactured to industry standards for thread forming screws, it requires a No. 21 drill bit (0.159" diameter) for proper installation. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.
