S-91465A245 3/4"-10 x 3" 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 (60,000 PSI) ensures reliable performance in demanding applications, reducing the risk of fastener failure.
- Coarse UNC threading provides faster installation and easier alignment, saving valuable assembly time.
- External square drive head offers superior torque transmission and resists cam-out, allowing for secure tightening with standard tools.
- Partially threaded design concentrates thread engagement where it's needed most, providing a strong, secure clamp on materials.
- ASTM A307 Grade A specification guarantees consistent quality and material properties suitable for general construction and industrial use.
- Unified Standard Class 2A thread fit ensures compatibility with standard nuts and tapped holes, facilitating easy sourcing and replacement.
- RoHS 3 compliance meets stringent environmental regulations, making it suitable for use in regulated markets and projects.
Professional Applications & Engineering Value
This 3/4"-10 UNC square head screw is engineered from ASTM A307 Grade A steel to address common challenges in heavy-duty assembly and construction. Its coarse thread and partially threaded shank are ideal for wood-to-wood or steel connections, providing a powerful clamping force that resists vibrational loosening. The large 1 1/8" square head and external square drive allow for high-torque application with common wrenches, making it a robust choice for structural frameworks, machinery anchoring, and other industrial applications where disassembly is infrequent. The combination of 60,000 PSI tensile strength and Rockwell B69 hardness ensures durability under static loads, offering a cost-effective, reliable fastener solution that minimizes maintenance needs.
Specification Summary & Compliance
This screw conforms to Unified Standard Class 2A thread fit for consistent dimensional accuracy. It is manufactured to ASTM A307 specifications, ensuring material and mechanical property compliance. The product is confirmed RoHS 3 (2015/863/EU) Compliant, adhering to restrictions on hazardous substances. Key dimensional attributes include a 3/4"-10 UNC coarse thread, a 3" length, and a 1 3/4" minimum thread length.
