S-93085A108 4-40 x 3/8" FF-S-92, QQ-P-35, MS24693-C4, NASM24693, 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 significant mechanical stress.
- Rockwell B70 hardness provides excellent wear resistance and long-term durability.
- Class 2A thread fit with UNC coarse threading allows for easy assembly and secure hold in various materials.
- 100° countersink angle and flat head design enable a flush, unobtrusive finish for streamlined surfaces.
- Phillips drive (No. 1 size) offers common tool compatibility and efficient installation.
- Full compliance with multiple standards including Fed. Spec. FF-S-92, MS24693-C4, and RoHS/REACH, ensuring quality and regulatory adherence.
Professional Applications & Engineering Value
This 4-40 UNC flat head screw is engineered to address critical fastening challenges in demanding sectors such as aerospace, electronics, and machinery assembly. The passivated 18-8 stainless steel material provides exceptional resistance to oxidation and chemical exposure, reducing maintenance needs in corrosive settings. Its coarse thread spacing and Class 2A thread fit facilitate quick, secure installations in soft metals or plastics, minimizing cross-threading risks. The flat head with a 100° countersink ensures a smooth surface profile, essential for aerodynamic or aesthetic applications. With a tensile strength of 70,000 psi and full threading, it delivers consistent clamping force and vibration resistance, making it a reliable choice for high-stress environments where precision and longevity are paramount.
Specification Summary & Compliance
This screw adheres to precise dimensional standards, including Class 2A thread fit for consistent engagement and UNC coarse threads (4-40 size) with a length of 3/8". It meets rigorous manufacturing specifications such as Fed. Spec. FF-S-92, QQ-P-35, MS24693-C4, NASM24693, and SAE AMS2700. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for global industrial use.
