S-93395A249 M4 x 5 mm DIN 7991 Stainless Steel Hex Drive Flat Head Screws
Stainless Steel Hex Drive Flat 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
- Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction and passivated finish
- High tensile strength of 70,000 psi ensures reliable, long-lasting fastening for demanding industrial applications
- Precise Class 6g thread fit guarantees smooth installation and a secure, vibration-resistant hold
- 2.5mm hex drive provides a positive grip for efficient installation and removal, reducing tool slippage
- Fully threaded design offers maximum grip length and consistent holding power along the entire fastener
- Compliance with DIN 7991 ensures dimensional accuracy, interchangeability, and proven performance to established engineering standards
- RoHS 3 and REACH compliance makes these screws suitable for use in regulated industries and environmentally conscious projects
Professional Applications & Engineering Value
Engineered for reliability, these M4 flat head screws are a critical component in assemblies where corrosion resistance and strength are non-negotiable. The 316 stainless steel material, enhanced by a passivated finish, provides exceptional protection against chlorides and acidic environments, making these metric hex drive screws ideal for marine, chemical processing, and food-grade equipment. The coarse thread and Class 6g tolerance facilitate quick and secure fastening into a variety of materials, reducing assembly time while preventing loosening under vibration. The flat head with a standard profile and 90° countersink angle sits flush for a clean, aerodynamic finish, which is essential in machinery, enclosures, and automotive applications where protrusions are not permissible.
Specification Summary & Compliance
This screw conforms to the dimensional and mechanical specifications of DIN 7991. The metric thread is specified as M4 x 0.7mm with a Class 6g tolerance and is fully threaded. The head features an 8mm diameter with a standard tolerance and a 2.5mm hex drive. This product is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant.
