S-93085A021 2-56 x 3/8" FF-S-92, QQ-P-35, NAS662C2R6, SAE AMS2700 Stainless Steel Phillips Flat Head Screws
Stainless Steel Phillips Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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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 fastening under demanding mechanical loads.
- Rockwell B70 hardness provides excellent durability and resistance to wear over repeated use.
- Class 2A thread fit with UNC coarse threading offers quick assembly and secure holding power.
- 100° countersink angle and flat head design allows for a flush, professional finish in countersunk holes.
- Phillips No. 1 drive enables efficient installation with common tools, reducing assembly time.
- Full threading along the 3/8" length ensures maximum grip and uniform stress distribution.
Professional Applications & Engineering Value
This 2-56 UNC flat head screw is engineered to address critical challenges in precision assembly, such as vibration loosening and corrosion in demanding settings. The passivated 18-8 stainless steel material offers exceptional resistance to rust and chemicals, making it suitable for electronics, aerospace, and marine applications where environmental factors are a concern. The coarse UNC thread and Class 2A fit provide reliable engagement in softer materials or where rapid installation is needed, while the flat head with 100° countersink ensures a smooth, low-profile finish that minimizes protrusion risks. Its compliance with stringent standards like Fed. Spec. FF-S-92 and SAE AMS2700 guarantees consistent performance in regulated industries, reducing downtime and maintenance costs.
Specification Summary & Compliance
This screw features precise Class 2A thread fit per UNC standards, with a length of 3/8" and full threading for uniform load distribution. It meets key specifications including Fed. Spec. FF-S-92, QQ-P-35, NAS662C2R6, and SAE AMS2700, ensuring adherence to industrial manufacturing norms. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, supporting environmental and safety regulations for global supply chains.
