S-90044A248 3-56 x 3/8" 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 under high-stress conditions, reducing the risk of fastener failure in demanding applications.
- Precision Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening in critical assemblies.
- Black-oxide finish on alloy steel offers enhanced corrosion resistance and a durable, non-galling surface for extended service life.
- Rockwell C37 hardness delivers excellent wear resistance and maintains thread integrity through repeated installations.
- Fully threaded design allows for maximum adjustability and clamping force distribution along the entire length.
- 5/64" hex drive socket head enables secure tool engagement and high torque application in confined spaces.
- Compliance with RoHS 3 and REACH ensures environmental safety and regulatory acceptance for global industrial use.
Professional Applications & Engineering Value
This 3-56 UNF thread socket head cap screw delivers critical performance in precision engineering applications where space constraints and vibration resistance are paramount. The black-oxide alloy steel construction combined with Class 3A thread fit addresses common industrial challenges like material galling and thread stripping in high-cycle assemblies. Engineers specify these fully threaded fasteners for machinery, automotive subsystems, and electronic enclosures requiring consistent clamping force and 170,000 psi tensile strength. The fine UNF threads provide superior load distribution in thin materials, while the standard socket head profile with 5/64" hex drive accommodates automated installation tools for manufacturing efficiency.
Specification Summary & Compliance
Manufactured to ASTM A574 specifications with Class 3A thread fit precision and UNF fine thread standards. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Thread specifications include 3-56 UNF right-hand thread with 0.099" thread diameter and 3/8" length.
