S-91236A562 1/4"-20 x 5" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws
Low-Strength Steel Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc plating that protects against rust and extends service life in harsh industrial environments
- High tensile strength of 60,000 psi ensures reliable performance under heavy loads and prevents fastener failure
- Rockwell B69 hardness provides excellent durability and resistance to wear during repeated assembly and disassembly
- UNC coarse threads with Class 2A fit enable faster installation and better vibration resistance in coarse materials
- External hex drive design allows for high torque application with standard tools, reducing installation time
- Partial threading configuration offers optimal grip strength while minimizing thread damage in through-hole applications
- Compliance with major regulations including RoHS 3 and REACH ensures environmental safety and global market acceptance
Professional Applications & Engineering Value
This 1/4"-20 x 5" hex head screw delivers exceptional engineering value for industrial applications requiring robust fastening solutions. The steel construction with zinc plating provides critical corrosion protection in manufacturing facilities, outdoor equipment, and structural assemblies. The UNC coarse thread design ensures rapid installation in steel frameworks, machinery bases, and construction projects where vibration resistance is paramount. With partial threading, it maintains superior clamping force while preventing cross-threading issues in through-bolting applications. Meeting ASME B18.2.1 specifications, this heavy-duty hex head screw solves common industrial challenges including joint integrity, assembly efficiency, and long-term reliability in demanding environments.
Specification Summary & Compliance
This fastener maintains Class 2A thread fit per UNC standards with precise dimensional accuracy. Manufacturing complies with ASME B18.2.1 specifications where identified as ASTM A307. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant (06/14/2023, 235 SVHC), ensuring adherence to international environmental and safety regulations for industrial components.
