S-91236A681 7/16"-14 x 3" 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
- Enhanced Durability: Zinc plating provides superior corrosion resistance, extending service life in harsh industrial environments.
- High Tensile Strength: 60,000 psi tensile strength ensures reliable performance under heavy loads and stress.
- Robust Hardness: Rockwell B69 hardness offers excellent wear resistance and reduces deformation during installation.
- Secure Fastening: Coarse UNC threads and Class 2A fit enable quick, stable assembly with reduced cross-threading risk.
- Easy Installation: External hex drive and hex head design allow for straightforward tightening with standard tools.
- Versatile Threading: Partially threaded shank provides optimal grip and clamping force for varied material thicknesses.
- Regulatory Compliance: Meets ASME B18.2.1, ASTM A307, RoHS 3, and REACH standards for safe, quality-assured use.
Professional Applications & Engineering Value
This 7/16"-14 UNC hex head screw is engineered to address critical industrial fastening challenges, such as vibration loosening and material fatigue. Constructed from high-strength steel with a zinc-plated finish, it resists rust and corrosion in demanding settings like machinery assembly, structural frameworks, and outdoor equipment. The coarse thread design ensures rapid installation and reliable holding power in soft materials or where disassembly is frequent. With a partially threaded shank, it concentrates clamping force precisely, reducing the risk of joint failure. Ideal for heavy-duty applications requiring 60,000 psi tensile strength, this fastener delivers consistent performance while complying with industry standards, minimizing downtime and maintenance costs.
Specification Summary & Compliance
This hex head screw adheres to precise dimensional tolerances, including Class 2A thread fit for consistent engagement and UNC coarse threads per ASME standards. It meets ASME B18.2.1 and ASTM A307 specifications for material and manufacturing quality. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and restricted substance adherence.
