S-91239A109 M3 x 4 mm ISO 7380 Steel Button Head Hex-Drive Screws
Steel Button Head Hex-Drive 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 and strength with Class 10.9 rating and 140,000 psi tensile strength, ensuring reliable performance in high-stress applications.
- Superior corrosion resistance thanks to the black-oxide finish on alloy steel, extending service life in harsh industrial environments.
- Secure and efficient fastening with a fully threaded M3 x 0.5 mm coarse pitch design, providing quick installation and strong hold.
- Easy installation and removal using a standard 2 mm hex drive, reducing assembly time and tool wear.
- Precise thread fit with Class 6g tolerance, minimizing the risk of cross-threading and ensuring consistent engagement.
- Compact and versatile design with a rounded button head and 4 mm length, ideal for space-constrained applications without sacrificing strength.
- Compliance with international standards including ISO 7380, RoHS 3, and REACH, guaranteeing safety and environmental responsibility.
Professional Applications & Engineering Value
This M3 rounded head hex screw is engineered from black-oxide alloy steel to address common industrial challenges like vibration loosening and corrosion. The fully threaded coarse pitch design ensures rapid assembly and robust clamping force in machinery, automotive, and electronics, where precision and reliability are critical. With a Class 10.9 strength grade and Rockwell C32 hardness, it withstands heavy loads and repetitive stress, reducing maintenance needs. The hex drive allows for high-torque applications without slippage, making it a top choice for engineers seeking durable, ISO 7380 compliant fasteners that meet rigorous industrial standards.
Specification Summary & Compliance
This screw features precise metric threading (M3 x 0.5 mm) with a Class 6g thread fit for accurate engagement, and is manufactured to ISO 7380 specifications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use. The dimensions include a 4 mm length, 5.7 mm head diameter, and 2 mm hex drive size, all adhering to standardized tolerances for consistent performance.
