S-96877A138 2-56 x 5/8" FF-S-92, QQ-P-35, MS51959-8, 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 environments and long-term reliability.
- High tensile strength of 70,000 psi ensures secure, durable fastening under demanding mechanical loads.
- Fully threaded design provides maximum grip and uniform load distribution along the entire screw length.
- 82° countersink angle with standard flat head profile allows for flush mounting, reducing snagging and improving aesthetics.
- Class 2A thread fit with coarse UNC threading offers easy assembly and reliable engagement in various materials.
- Phillips drive (No. 1 size) enables efficient installation with common tools, minimizing slippage and damage.
- Compliance with multiple industry standards including Fed. Spec. FF-S-92 and RoHS 3, ensuring quality and environmental safety.
Professional Applications & Engineering Value
These 2-56 UNC flat head Phillips screws are engineered from passivated 18-8 stainless steel to address critical industrial challenges, such as corrosion in humid or chemical-exposed settings. The fully threaded coarse UNC design and Class 2A thread fit ensure rapid, secure fastening in assemblies where vibration resistance and repeatability are essential. The 82° countersink angle facilitates a smooth, flush finish, preventing protrusions in precision equipment, electronics, and machinery. Ideal for aerospace, automotive, and marine applications, these screws deliver consistent performance while meeting rigorous specifications like Fed. Spec. FF-S-92 and SAE AMS2700, reducing downtime and maintenance costs.
Specification Summary & Compliance
This screw features a 2-56 UNC coarse thread with Class 2A thread fit for standard inch-system tolerances, ensuring precise alignment and ease of use. It complies with Fed. Spec. FF-S-92, QQ-P-35, MS51959-8, and SAE AMS2700, and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, confirming adherence to environmental and safety regulations for industrial fasteners.
