S-91247A639 3/8"-16 x 3 3/4" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 Steel Hex 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
- Exceptional load-bearing capacity with 120,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance through zinc plating, extending service life in various industrial environments
- Optimized thread engagement with UNC coarse threads and Class 2A fit ensuring quick assembly and vibration resistance
- High-grade material strength meeting Grade 5 specifications with Rockwell C25 hardness for consistent durability
- Secure external hex drive providing positive torque transmission and easy installation with standard tools
- Versatile partial threading allowing for both clamping and alignment functions in assembly operations
- Regulatory compliance assurance meeting industry standards and environmental regulations for global supply chain compatibility
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers critical engineering solutions for industrial assembly challenges. The zinc plated steel construction provides essential corrosion protection in manufacturing environments, while the 3/8"-16 UNC coarse thread design ensures rapid installation and maintains integrity under vibration. The partial threading configuration offers precise clamping control, making it ideal for machinery assembly, structural frameworks, and equipment manufacturing where both strength and adjustability are required. With external hex drive compatibility, maintenance and disassembly operations are streamlined, reducing downtime in production facilities and industrial maintenance applications.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with 3/8"-16 UNC coarse thread specifications. Complies with ASME B18.2.1 and SAE J429 standards for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements, ensuring safe use in regulated industrial markets worldwide.
