S-92981A779 M4 ASTM A108 Shoulder Screws
Shoulder 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 durability with 140,000 psi tensile strength and Rockwell C32 hardness, ensuring reliable performance in demanding industrial environments.
- Corrosion-resistant black oxide finish provides enhanced protection against rust and wear, extending service life in harsh conditions.
- Precise shoulder fit with a 5 mm diameter and 50 mm length (tolerance 0 to 0.25 mm), offering stable alignment and reduced vibration in assemblies.
- Easy installation and removal thanks to the 2.5 mm hex drive and knurled head, allowing for secure tool grip and efficient maintenance.
- Accurate metric threading with M4 x 0.7 mm coarse pitch and Class 5g6g fit, ensuring smooth engagement and high load-bearing capacity.
- Compliance with industry standards including ASTM A108, RoHS 3, and REACH, guaranteeing safety and environmental responsibility for global applications.
- Versatile right-hand thread design supports quick assembly in various machinery, from automation systems to precision equipment.
Professional Applications & Engineering Value
This M4 shoulder screw is engineered to address common industrial challenges, such as misalignment and component wear. Made from alloy steel with a black oxide finish, it resists corrosion and maintains integrity under high-stress conditions, ideal for precision applications like robotics, conveyor systems, and assembly jigs. The knurled head and hex drive facilitate easy handling, while the coarse thread pitch and Class 5g6g thread fit ensure secure fastening, reducing downtime and enhancing operational efficiency in B2B settings.
Specification Summary & Compliance
This shoulder screw features precise dimensions, including a shoulder diameter of 5 mm (tolerance -0.072 to -0.01 mm) and length of 50 mm (tolerance 0 to 0.25 mm), with metric thread standards (M4 x 0.7 mm, Class 5g6g). It complies with ASTM A108 for material specifications, RoHS 3 (2015/863/EU) for hazardous substance restrictions, and REACH (EC 1907/2006) for chemical safety, ensuring reliability and regulatory adherence in industrial use.
