S-91465A287 1"-8 x 6" 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 load-bearing capacity for demanding industrial applications
- External square drive design provides superior torque transmission and prevents stripping during installation
- ASTM A307 Grade A steel construction delivers consistent performance and durability in harsh environments
- Coarse UNC threading enables faster installation and better resistance to vibration loosening
- Class 2A thread fit guarantees proper engagement and interchangeability with standard components
- RoHS 3 compliance ensures environmental responsibility without compromising performance
- Partially threaded design combines clamping force with unthreaded shank strength for versatile fastening solutions
Professional Applications & Engineering Value
These 1"-8 UNC coarse thread square head screws are engineered to solve critical fastening challenges in heavy-duty industrial applications. The ASTM A307 Grade A steel construction provides excellent strength-to-weight ratio, while the Rockwell B69 hardness ensures resistance to deformation under stress. The external square drive design allows for high-torque installation without cam-out issues, making them ideal for construction, machinery assembly, and structural applications where vibration resistance is crucial. The coarse thread pattern maintains holding power in softer materials and enables quick assembly in production environments. These partially threaded screws offer optimal clamping force distribution, preventing joint failure in dynamic loading conditions common in industrial settings.
Specification Summary & Compliance
Manufactured to Unified Standard Class 2A thread fit specifications with 1"-8 UNC coarse thread dimensions. Complies with ASTM A307 material standards and maintains RoHS 3 (2015/863/EU) environmental compliance. Features right-hand threading with 2 1/4" minimum thread length on a 6" overall length configuration. The square head design measures 1 1/2" width with 21/32" height for standardized tool compatibility across industrial applications.
