S-91465A275 3/4"-10 x 10" 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 torque transmission through external square drive design for secure installation and removal in demanding applications
- Superior material strength with ASTM Grade A steel construction providing reliable 60,000 PSI tensile strength for structural integrity
- Optimized thread engagement with UNC coarse threading and Class 2A fit ensuring consistent performance and vibration resistance
- Enhanced durability with Rockwell B69 hardness rating for extended service life in industrial environments
- Versatile partial threading design allowing for both clamping force and clearance in assembly applications
- Regulatory compliance with RoHS 3 standards ensuring environmental safety and global market acceptance
- Right-hand thread orientation following industry standards for compatibility with common installation tools and procedures
Professional Applications & Engineering Value
This 3/4"-10 UNC square head screw delivers exceptional engineering value through its ASTM A307 Grade A steel composition and coarse thread configuration. The external square drive provides superior torque transmission compared to standard hex heads, reducing slippage during high-torque applications. The partially threaded design offers dual functionality - the threaded portion delivers secure clamping force while the unthreaded shank maintains alignment in structural connections. With 60,000 PSI tensile strength and Rockwell B69 hardness, this fastener withstands heavy loads and impact in construction, machinery assembly, and industrial equipment applications where unified standard Class 2A fit ensures consistent thread engagement and vibration resistance.
Specification Summary & Compliance
This square head screw features precision 3/4"-10 UNC coarse threads with Class 2A dimensional accuracy per unified thread standards. The fastener meets ASTM A307 specifications for low-strength steel fasteners and complies with RoHS 3 (2015/863/EU) environmental regulations. Manufacturing follows inch system measurements with 2" minimum thread length and 10" overall length, ensuring consistent performance across industrial applications requiring reliable, standardized fastening solutions.
