S-91273A778 M4 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
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
- Enhanced durability and wear resistance from the black oxide finish, extending service life.
- High tensile strength of 70,000 psi ensures reliable performance under heavy loads.
- Precise alignment and secure positioning due to the 4mm shoulder diameter with tight tolerance.
- Easy installation and removal with the knurled hex socket head design, preventing tool slippage.
- Accurate and consistent threading with Class 5g6g fit, reducing assembly issues.
- Compliance with RoHS 3 and REACH regulations for safe and environmentally responsible use.
Professional Applications & Engineering Value
This M4 shoulder screw is engineered to address critical alignment and durability challenges in industrial assemblies. The 18-8 stainless steel material offers excellent resistance to corrosion and oxidation, making it suitable for machinery, automotive, and electronics applications where exposure to moisture or chemicals is common. The black oxide finish not only enhances aesthetic appeal but also provides an additional layer of protection against wear and galling. With a knurled hex socket head, it ensures secure tool engagement, reducing the risk of stripping during high-torque installations. The precise shoulder diameter and length allow for accurate component positioning, minimizing misalignment and vibration in dynamic systems. This metric shoulder screw is a reliable choice for designers seeking long-term performance and reduced maintenance in demanding environments.
Specification Summary & Compliance
This shoulder screw adheres to metric system standards, with a thread size of M4 x 0.7mm coarse pitch and a Class 5g6g thread fit for consistent engagement. The shoulder diameter tolerance is -0.04 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm, ensuring high dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial applications without hazardous substances.
