S-90358A129 M4 x 18 mm Alloy Steel Ultra-Low-Profile Socket Head Screws
Alloy Steel Ultra-Low-Profile 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 strength and durability with 140,000 psi tensile strength and Rockwell C32 hardness, ensuring reliable performance in demanding applications.
- Precise fit and secure fastening thanks to Class 5g6g thread fit and ±0.127mm length tolerance, minimizing assembly errors.
- Space-saving ultra-low profile head allows installation in tight spaces where clearance is limited.
- Corrosion-resistant black-oxide finish on alloy steel provides enhanced protection against rust in industrial environments.
- Easy installation and removal with a standard 2.5mm hex drive, compatible with common tools.
- Wide compatibility with coarse 0.7mm pitch and fully threaded M4 design for versatile use in metric assemblies.
- Compliance with environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use.
Professional Applications & Engineering Value
This M4 socket head cap screw is engineered for precision mechanical assemblies where space constraints and high strength are critical. The ultra-low profile socket head design minimizes protrusion, making it ideal for compact machinery, automotive components, and electronic enclosures. Made from black-oxide alloy steel, it resists corrosion and wear, extending service life in harsh conditions. The Class 5g6g coarse thread ensures quick, secure fastening with reduced risk of cross-threading, while the fully threaded M4 x 0.7mm configuration provides consistent clamping force. These features address common industrial challenges like vibration loosening and misalignment, enhancing reliability in high-performance applications.
Specification Summary & Compliance
This screw features a metric M4 thread with a 0.7mm coarse pitch and Class 5g6g thread fit per ISO standards, ensuring dimensional accuracy. Length tolerance is tightly controlled at ±0.127mm. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances. Manufactured to meet industrial fastener specifications for alloy steel with a black-oxide surface treatment.
