S-91247A534 1"-14 x 6 1/2" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

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 that protects against rust and extends service life
• Precise thread engagement with Class 2A fit and extra fine 1"-14 thread pitch for secure fastening in thin materials
• Optimized strength-to-weight ratio from Grade 5 steel construction with Rockwell C25 hardness
• Easy installation and removal with standard external hex drive and 1 1/2" head width for common tool compatibility
• Versatile partial threading with 2 1/2" minimum thread length for both clamping and alignment functions
• Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed interoperability

Professional Applications & Engineering Value

This Grade 5 hex head screw delivers exceptional engineering value through its zinc plated steel construction and extra fine thread design. The 1"-14 UNS thread with Class 2A fit provides superior vibration resistance and precise engagement in thin-section materials commonly found in machinery, structural assemblies, and equipment manufacturing. The partially threaded configuration combines the clamping force of threaded sections with the alignment benefits of smooth shank areas, making it ideal for applications requiring both precise positioning and secure fastening. With 120,000 psi tensile strength and Rockwell C25 hardness, this fastener maintains integrity under heavy loads and repetitive stress, solving critical challenges in industrial maintenance, automotive assembly, and heavy equipment applications where reliability is paramount.

Specification Summary & Compliance

This hex head screw features precise Class 2A thread fit with 1"-14 extra fine thread spacing in right-hand thread direction. Manufactured to ASME B18.2.1 and SAE J429 Grade 5 specifications, ensuring dimensional accuracy and mechanical properties. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial applications. With a total length of 6 1/2" and minimum thread length of 2 1/2", it maintains consistent performance across its specified dimensional range.