S-90275A638 3/8"-16 x 3 1/2" 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
- Enhanced corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
- Superior holding power with 60,000 psi tensile strength and Rockwell B70 hardness for reliable performance under heavy loads
- Precise flush mounting enabled by the 82° countersink angle and flat head design for seamless surface integration
- Quick installation and removal with standard slotted drive and fully threaded coarse (UNC) design
- Consistent thread engagement ensured by Class 2A thread fit for secure fastening in industrial assemblies
- Broad regulatory compliance meeting ASME B18.6.3, RoHS 3, and REACH standards for global supply chain compatibility
- Versatile 3 1/2" length providing ample threading depth for thick material sections in structural applications
Professional Applications & Engineering Value
These 3/8"-16 UNC flat head slotted screws deliver critical engineering solutions where surface flushness and high tensile strength are paramount. The zinc-plated steel construction combats corrosion in manufacturing facilities, outdoor equipment, and machinery exposed to humidity. With coarse threading and full thread coverage, they prevent cross-threading in soft materials and maintain grip in vibration-prone assemblies. The 82° countersink angle ensures precise seating in pre-drilled holes, eliminating protrusions in conveyor systems, structural frames, and automotive components. Ideal for maintenance teams and OEMs requiring ASME B18.6.3 compliant fasteners that withstand repetitive stress while meeting environmental regulations.
Specification Summary & Compliance
Manufactured to Class 2A thread fit tolerances with Unified Coarse (UNC) threading and right-hand direction. Complies with ASME B18.6.3 dimensional standards and demonstrates conformity to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for hazardous substance restrictions. The screw maintains consistent mechanical properties with specified Rockwell B70 hardness and 60,000 psi tensile strength across production batches.
