S-90344A144 M4 x 8 mm ASTM A574 Socket Head Screws with Flat Washer
Socket Head Screws with Flat Washer
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Washer & Nut
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional Corrosion Resistance: Black-oxide finish on both screw and washer protects against rust and wear in harsh industrial environments.
- Superior Tensile Strength: 170,000 psi tensile strength and Rockwell C39 hardness ensure reliable performance under high-stress loads.
- Optimized Load Distribution: Integrated 12mm OD flat washer spreads clamping force, reducing surface damage and improving joint integrity.
- Precision Thread Fit: Class 6g metric coarse thread (M4 x 0.7mm) ensures consistent, reliable engagement and easy assembly.
- Secure Hex Drive: 3mm hex socket drive provides high torque transmission and reduces the risk of tool slippage or head stripping.
- Full Compliance Assurance: Meets ASTM A574 for material quality and is RoHS 3 & REACH compliant for safe, regulated use.
- Compact, Fully Threaded Design: 8mm length with full threading offers versatile fastening in space-constrained applications.
Professional Applications & Engineering Value
Engineered for demanding environments, this M4 socket head cap screw combines black-oxide alloy steel with a flat washer to address common industrial challenges like vibration loosening and surface galling. The coarse thread (0.7mm pitch) and Class 6g tolerance enable quick, precise installation in metals and composites, while the hex socket drive allows high torque application in confined spaces. Ideal for machinery, automotive assemblies, and heavy equipment, this fastener ensures long-term reliability by resisting corrosion and maintaining clamp load under dynamic stresses, reducing maintenance cycles and downtime.
Specification Summary & Compliance
This metric socket head cap screw features M4 x 0.7mm coarse threads with Class 6g thread fit and a standard socket head profile. It is manufactured in compliance with ASTM A574 for material consistency and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications.
