S-91775A701 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 construction, extending service life in demanding industrial environments
- Efficient thread forming design creates strong, permanent threads in sheet metal without chips or debris
- Optimized Phillips No. 2 drive provides secure tool engagement and reduces cam-out during installation
- Professional oval head profile with 82° countersink angle ensures flush, aesthetically pleasing finishes
- Precision No. 29 drill bit compatibility simplifies installation planning and reduces preparation time
- Full threading along 1-1/4" length delivers maximum grip strength across the entire fastener engagement
- Regulatory compliance assurance with RoHS 3 and REACH standards for global market acceptance
Professional Applications & Engineering Value
These thread forming tapping screws deliver exceptional value in sheet metal applications where vibration resistance and permanent fastening are critical. The black-oxide steel construction provides reliable corrosion protection while the A/AB thread forming design displaces material rather than cutting it, creating stronger threads that won't loosen under stress. The fully threaded No. 8 diameter screw with 15 TPI right-hand threading ensures maximum holding power across the entire 1-1/4" length. The oval head with standard profile and 82° countersink angle allows for clean, flush installations in HVAC systems, electrical enclosures, and industrial equipment where both performance and appearance matter.
Specification Summary & Compliance
This No. 8 x 1-1/4" tapping screw features Class 2A thread tolerances with 0.164" thread diameter and 15 threads per inch right-hand threading. Manufactured to A/AB tapping screw standards for thread forming applications, it requires No. 29 drill bit (0.136" diameter) preparation. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance for industrial fastener applications.
