S-91251A745 2-64 x 1/8" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance provided by the black-oxide finish, extending service life in harsh industrial environments.
- Precision Class 3A fine UNF threads offer tighter tolerances and improved load distribution for secure, vibration-resistant assemblies.
- High hardness (Rockwell C37) enhances wear resistance and durability, maintaining integrity under repetitive use.
- Fully threaded design allows for consistent clamping force along the entire length, ideal for compact or high-precision components.
- Hex socket drive (5/64") enables easy installation in confined spaces with standard tools, improving assembly efficiency.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety for global supply chain requirements.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these black-oxide alloy steel socket head cap screws address critical challenges like vibration loosening and corrosion in machinery, electronics, and automotive assemblies. The Class 3A UNF fine threads provide superior thread engagement and fatigue resistance, minimizing the need for frequent maintenance. With a fully threaded right-hand design and high tensile strength, they deliver uniform stress distribution and reliable fastening in compact or high-load applications, ensuring long-term operational stability and reduced downtime.
Specification Summary & Compliance
This socket head cap screw features precise Class 3A thread fit with 2-64 UNF fine threads and a standard socket head profile. It meets ASTM A574 specifications for high-strength alloy steel, ensuring consistent manufacturing quality. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it supports environmentally responsible sourcing and use in global markets.
