Value Collection SEW7X1200-100BX M12 Lock Washer 100 Pack

Product Description

The VALUE COLLECTION SEW7X1200-100BX is an external tooth lock washer designed for M12 screw applications. It features a 13mm inside diameter and a 20.5mm outside diameter, with a 1mm thickness. Manufactured from Grade 18-8 Austenitic A2 stainless steel with an uncoated finish, this washer provides reliable corrosion resistance in a wide range of fastening assemblies. The external tooth design bites into both the mating surface and the fastener bearing face to resist loosening under vibration and dynamic loads. This item is sold in a minimum order quantity of 100 pieces per package, making it practical for shop stock or project-level quantities.

This lock washer is suited for use in mechanical assemblies, electrical enclosures, plumbing fixtures, HVAC equipment frames, and structural connections where M12 fasteners are used and vibration resistance is required. The 18-8 A2 stainless steel construction makes it appropriate for indoor and outdoor applications where mild to moderate corrosion exposure is a concern. Installers across plumbing, HVAC, electrical, and general mechanical trades use external tooth lock washers of this type when standard flat washers are insufficient to prevent fastener back-out.

Key Features

• External tooth design resists loosening under vibration and dynamic loads
• Grade 18-8 Austenitic A2 stainless steel construction for corrosion resistance
• 13mm inside diameter sized for M12 fasteners
• 20.5mm outside diameter with 1mm thickness
• Uncoated finish suitable for direct use without additional treatment
• Conforms to DIN 6797 and DIN 6798 standards
• Sold in a 100-piece minimum order quantity for efficient stocking

Compatibility

Designed for use with M12 screws and bolts in applications requiring an external tooth lock washer. Conforms to DIN 6797 and DIN 6798 dimensional and performance standards.

Installation Notes

External tooth lock washers should be installed between the fastener head or nut and the mating surface, with the teeth facing the bearing surface to ensure proper bite. Ensure the mating surface is clean and free of debris before assembly. Torque fasteners according to the fastener manufacturer specifications for the given material and application. Do not reuse lock washers that have been fully compressed, as tooth engagement may be compromised.