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The VALUE COLLECTION A410109 is a metric hex head cap screw engineered for demanding fastening applications where corrosion resistance is critical. Built from Grade 316 austenitic stainless steel (A4 classification), this fully threaded fastener meets DIN 933 standards and carries a thread size of M16 x 2.00 with a 40 mm length under the head. The 24 mm hex drive allows for high-torque installation using standard hex tooling. Each package contains 5 screws. This fastener is installed by millwrights, maintenance technicians, pipefitters, and marine service professionals working in corrosive or wet environments.
Grade 316 stainless steel provides superior resistance to chlorides and acids compared to Grade 304, making this screw well suited for marine hardware, chemical processing equipment, food service installations, outdoor structural assemblies, and similar applications where moisture or chemical exposure is a factor. The fully threaded shank along the full 40 mm length allows engagement from any point, offering flexibility in clamping depth across a range of joint configurations.
Designed as a DIN 933-compliant M16 x 2.00 metric hex head cap screw suitable for use in standard metric threaded assemblies requiring Grade 316 stainless steel fasteners.
Installation should be performed by qualified mechanical or maintenance technicians familiar with metric fastener torque procedures. Always verify the mating thread is clean and free of debris before assembly. Use a calibrated torque wrench and follow the torque specifications provided by the equipment or structure manufacturer for M16 Grade A4 stainless fasteners. Avoid using carbon steel tools that may introduce galvanic contamination on stainless hardware in corrosive service environments.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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