S-91465A164 1/2"-13 x 1 3/4" ASTM A307 Square Head Screws
Square 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
- High tensile strength with 60,000 psi rating ensures reliable performance in demanding applications
- ASTM Grade A steel construction provides excellent durability and resistance to wear
- External square drive head offers superior torque transmission and prevents stripping during installation
- Coarse UNC threading delivers faster installation and better holding power in various materials
- Full threading along the entire 1 3/4" length maximizes grip and load distribution
- Class 2A thread fit ensures consistent, reliable engagement with standard nuts
- RoHS 3 compliance meets environmental regulations for safe use in industrial settings
Professional Applications & Engineering Value
This 1/2"-13 UNC square head screw delivers exceptional engineering value through its ASTM Grade A steel construction and coarse thread design. The combination of 60,000 psi tensile strength and Rockwell B69 hardness provides reliable fastening in heavy-duty applications where vibration resistance and structural integrity are critical. The external square drive prevents cam-out during high-torque installation, making it ideal for construction, machinery assembly, and structural steel connections. The fully threaded design ensures maximum engagement depth, while the right-hand thread direction offers compatibility with standard industrial equipment. These square head screws solve common fastening challenges by providing superior grip, easy installation, and long-term reliability in demanding environments.
Specification Summary & Compliance
This fastener features Unified Standard Class 2A thread fit with 1/2"-13 UNC coarse threading and meets ASTM A307 specifications. The inch measurement system ensures dimensional accuracy with a head width of 3/4" and overall length of 1 3/4". The product is RoHS 3 (2015/863/EU) compliant and manufactured to industrial standards for reliable performance in commercial and construction applications requiring low strength grade fasteners with consistent quality assurance.
