S-90044A312 1/4"-20 x 10" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket 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
- Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications and reduces the risk of fastener failure.
- Superior thread precision with Class 3A fit provides secure, vibration-resistant connections, minimizing loosening in dynamic environments.
- Durable Black-Oxide finish on alloy steel offers enhanced corrosion resistance, extending service life in demanding industrial conditions.
- Partially threaded design allows for precise clamping force control and prevents thread damage during installation.
- High hardness rating (Rockwell C37) ensures excellent wear resistance, maintaining dimensional stability under repeated use.
- Standard hex drive compatibility with 3/16" drive size enables easy installation and removal with common tools.
- Compliance with international standards including ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety.
Professional Applications & Engineering Value
This Black-Oxide Alloy Steel Socket Head Cap Screw delivers critical engineering advantages for industrial applications where reliability is paramount. The 1/4"-20 UNC coarse thread design provides rapid assembly and superior grip in materials like steel and cast iron, while the partially threaded shank concentrates clamping force precisely where needed. With 170,000 psi tensile strength and Rockwell C37 hardness, it withstands extreme mechanical stresses in heavy machinery, automotive systems, and construction equipment. The black-oxide surface treatment adds an extra layer of protection against rust and corrosion in harsh environments, making these socket head cap screws ideal for applications requiring both high strength and durability.
Specification Summary & Compliance
This fastener features Class 3A thread fit for precision tolerance, UNC coarse threads with right-hand direction, and a partially threaded rod type with minimum 1" thread length. Manufactured to ASTM A574 specification for high-strength alloy steel socket head cap screws. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring restricted substance compliance for industrial use.
