S-91783A126 5-40 x 3/8" ASME B18.6.3 Stainless Steel Round Head Slotted Screws
Stainless Steel Round Head Slotted 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 from 18-8 Stainless Steel and passivated finish, ideal for harsh industrial environments
- Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for reliable load-bearing performance
- Precise thread engagement with Class 2A thread fit and UNC coarse threads ensuring secure fastening and vibration resistance
- Full-threaded design maximizes grip length and provides uniform stress distribution across the entire fastener
- Standard slotted drive compatibility with rounded head profile for easy installation using common tools
- Comprehensive regulatory compliance meeting ASME B18.6.3 specifications while being RoHS 3 and REACH compliant
- Right-hand thread direction provides standard installation familiarity and operational efficiency
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 5-40 UNC coarse thread screws deliver critical performance advantages where reliability matters most. The 18-8 Stainless Steel construction combined with passivated finish creates a robust barrier against corrosion, making these rounded head slotted screws ideal for machinery, electronic enclosures, and assembly lines exposed to moisture or chemicals. The fully threaded design ensures maximum thread engagement in various material thicknesses, while the Class 2A thread fit provides consistent installation torque and prevents cross-threading issues. These industrial-grade fasteners solve common challenges of fastener failure, corrosion-induced degradation, and installation inconsistency in manufacturing and maintenance operations.
Specification Summary & Compliance
This 5-40 UNC coarse thread screw features precise Class 2A thread fit tolerances with a diameter of 0.125" and 3/8" length. Manufactured to ASME B18.6.3 specifications with right-hand threading and fully threaded design. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for global industrial applications.
