S-90275A640 3/8"-16 x 4" ASME B18.6.3 Steel Slotted Flat Head Screws
Steel Slotted Flat Head 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 zinc-plated steel construction for extended service life in harsh industrial environments
- High tensile strength of 60,000 psi ensures reliable fastening performance under heavy loads and vibration
- Precision Class 2A thread fit provides smooth installation and consistent engagement with mating components
- 82° countersink angle enables flush mounting for clean, professional finishes in metal and wood applications
- Fully threaded design offers maximum grip length and holding power throughout the entire 4" length
- Coarse UNC thread spacing allows for quick assembly and reduced cross-threading risks in production environments
- Rockwell B70 hardness maintains thread integrity and prevents stripping during repeated installation cycles
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 3/8"-16 UNC flat head screws provide exceptional value in machinery assembly, structural frameworks, and equipment manufacturing. The zinc-plated steel construction delivers reliable corrosion protection in environments exposed to moisture and chemicals, while the fully threaded right-hand design ensures maximum load distribution across the entire fastener length. The slotted drive style accommodates traditional installation tools, making these screws versatile for maintenance and repair operations. With their 82° countersink angle and standard flat head profile, they create seamless, flush surfaces in metal fabrication and woodworking projects, eliminating protrusions that could interfere with moving parts or create safety hazards.
Specification Summary & Compliance
This 4" length flat head screw features 3/8"-16 UNC coarse threads with Class 2A thread fit tolerance for precise engagement. Manufactured to meet ASME B18.6.3 specifications for dimensional accuracy and performance standards. The product is fully compliant with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations, ensuring safe use in industrial applications across global markets.
