Value Collection HC3XX04025-050BX M4 Hex Cap Screw 316 Ss Din 933

Product Description

The VALUE COLLECTION HC3XX04025-050BX is a fully threaded hex head cap screw manufactured from Grade 316 austenitic stainless steel, classified as Metric Grade A4. Sized at M4 x 0.70 thread pitch and 25 mm length under head, this fastener is driven with a 7 mm hex wrench or socket. The bright uncoated finish exposes the natural corrosion resistance of 316 alloy, which contains molybdenum for improved performance in chloride-rich and marine environments. Conforms to DIN 933, the metric standard for fully threaded hex head screws. Sold in a minimum order quantity of 50 pieces per box.

This fastener is suited for mechanical assemblies, equipment enclosures, marine hardware, food-processing equipment, chemical process installations, and outdoor structural connections where corrosion resistance is the primary design requirement. The M4 thread size is common in light-to-medium duty fastening applications across HVAC equipment panels, pump housings, electrical enclosures, and plumbing fixture brackets. Installation is performed by maintenance technicians, millwrights, pipefitters, and field service technicians working across industrial and commercial trades.

Key Features

• Grade 316 austenitic stainless steel with molybdenum content for superior chloride and corrosion resistance
• Metric Grade A4 classification per DIN 933 standard for fully threaded hex head screws
• Fully threaded shank along the 25 mm length under head for maximum thread engagement
• 7 mm hex drive compatible with standard metric hex sockets and wrenches
• Bright uncoated finish — no coating to crack, chip, or compromise dimensional tolerances
• Minimum order quantity of 50 pieces provides job-lot supply for repetitive fastening tasks

Compatibility

Designed for use in any metric-threaded M4 x 0.70 tapped hole or nut requiring a DIN 933 fully threaded hex head cap screw in stainless steel.

Installation Notes

Install using a metric hex socket or open-end wrench sized to 7 mm. De-energize and isolate any equipment before accessing fastened panels or enclosures per applicable NFPA 70 or OSHA lockout-tagout requirements. Apply an anti-galling compound when threading stainless steel fasteners into stainless steel tapped holes, as Grade A4 alloys are susceptible to galling under high torque without lubrication. Do not mix metric and inch-series fasteners in the same assembly.