S-95440A116 M6 x 12 mm ASTM A276 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure.
• Enhanced durability and strength from a Rockwell B70 hardness and 70,000 psi tensile strength, ensuring reliable performance under high stress.
• Secure, flush installation with a 100° countersink angle and undercut flat head, minimizing protrusion and improving aesthetic finish.
• Efficient assembly and removal using a standard 4 mm hex drive, providing a positive grip and reducing tool slippage.
• Precise thread engagement with a Class 6g fit and coarse 1 mm pitch, enabling quick, secure fastening in a variety of materials.
• Long-lasting surface protection from the black oxide finish, which adds a layer of corrosion resistance and reduces light reflection.
• Guaranteed material integrity and compliance with stringent ASTM A276 specifications for stainless steel bar stock.

Professional Applications & Engineering Value

This M6 flat head screw is engineered to address common challenges in industrial assembly, such as corrosion-induced failure and installation inefficiency. Manufactured from 316 stainless steel, it offers exceptional resistance to chlorides and acidic conditions, making it a top choice for marine, chemical processing, and food-grade equipment. The combination of a fully threaded design and Class 6g thread fit ensures maximum holding power and vibration resistance in pre-tapped holes or through materials. The black oxide finish not only enhances the screw's aesthetic appeal but also provides an additional barrier against rust, reducing maintenance needs. The undercut head profile and 100° countersink angle allow for a flush mount, eliminating snag points and creating a smooth surface—critical in applications where safety and cleanliness are paramount, such as machinery guards, conveyor systems, and architectural metalwork.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including a metric M6 x 1mm thread with a Class 6g tolerance for consistent fit. The head diameter is controlled to a tolerance of -0.127 to 0.127 mm, ensuring uniform countersinking. Manufacturing and material quality comply with ASTM A276 for stainless steel bar. The product is also verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming the absence of restricted hazardous substances and supporting environmentally responsible procurement.