Value Collection A410357 M12 Flat Washer 316 Ss 25-pack

Product Description

The VALUE COLLECTION A410357 is a standard flat washer designed for use with M12 fasteners. Manufactured from Grade 316 stainless steel with a plain finish, it provides a broad load-bearing surface that distributes clamping force and reduces fastener pull-through in bolted assemblies. The washer conforms to DIN 125A, the widely adopted metric standard for flat washers. With an inside diameter of 13 millimeters and an outside diameter of 24 millimeters, it fits standard M12 bolt shanks without modification. Grade 316 stainless steel offers superior corrosion resistance compared to Grade 304, making it the go-to choice for marine, coastal, chemical, and other corrosive service environments. Licensed tradespeople and maintenance professionals across plumbing, HVAC, electrical, and structural applications reach for this grade when longevity in wet or chemically aggressive conditions is the priority.

This washer is suited for residential and commercial installation work wherever M12 metric fasteners are used and corrosion resistance is required. Typical applications include pipe flange bolting, equipment mounting, outdoor structural connections, pool and spa mechanical assemblies, and marine hardware installations. The plain finish leaves the base alloy exposed, which is appropriate for environments where the natural passivation layer of 316 stainless steel provides sufficient protection. Sold in a package of 25, the quantity supports small-batch repair work and stock replenishment for service vans or shop inventory.

Key Features

• Grade 316 stainless steel construction for superior resistance to chlorides, salt water, and chemical exposure
• Conforms to DIN 125A metric flat washer standard
• 13 millimeter inside diameter fits M12 fasteners without modification
• 24 millimeter outside diameter distributes load across a broad bearing surface
• Plain finish — no coating to delaminate or interfere with torque values in precision assemblies
• Package quantity of 25 supports service calls and small-batch stocking

Compatibility

Designed for use with M12 metric bolts and screws in applications requiring a DIN 125A standard flat washer. Suitable for any assembly that accepts an M12 fastener with a 13 millimeter through-hole clearance.

Installation Notes

Installation is performed by any trade professional working with metric fastener assemblies. Always power down or depressurize the relevant system before disassembling bolted connections. Seat the washer flush against the mating surface before applying torque to the fastener. Inspect for burrs or surface contamination that could compromise the bearing face or the corrosion-resistant passivation layer of the stainless steel.