S-91772A701 1/4"-20 x 3 1/2" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips 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 passivated 18-8 stainless steel construction, ideal for harsh industrial environments.
- High tensile strength of 70,000 psi ensures reliable, long-lasting fastening under significant mechanical stress.
- Rockwell B70 hardness provides excellent wear resistance and durability for repeated use.
- UNC coarse threading allows for faster installation and reduced cross-threading risk in coarse materials.
- Phillips No. 3 drive offers efficient torque transfer and common tool compatibility for streamlined assembly.
- Class 2A thread fit ensures consistent, reliable engagement with standard nuts and threaded holes.
- Partial threading provides unthreaded shank for precise clamping and shear strength in specific applications.
Professional Applications & Engineering Value
This 1/4"-20 x 3 1/2" rounded head screw is engineered to address common industrial challenges, such as corrosion in moist or chemical-exposed settings. The passivated 18-8 stainless steel material offers inherent rust resistance, extending service life in machinery, outdoor equipment, and food processing applications. Its UNC coarse thread design facilitates quick assembly in soft metals or plastics, reducing installation time and labor costs. The pan head style with a Phillips No. 3 drive ensures a low-profile, secure fit that withstands vibration, making it suitable for automotive, electrical enclosures, and structural assemblies where reliability is critical. Combined with 70,000 psi tensile strength, this fastener delivers consistent performance in high-stress environments, minimizing maintenance and replacement frequency.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy and easy assembly. It is manufactured in compliance with ASME B18.6.3 standards, ensuring consistent quality and interchangeability. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for hazardous substances.
