Value Collection SIW7X2400-010BX M24 Internal Tooth Lock Washer

Product Description

The VALUE COLLECTION SIW7X2400-010BX is a stainless steel internal tooth lock washer designed for use with M24 fasteners. It features a 25mm inside diameter and a 38mm outside diameter, with a thickness of 1.5mm. Manufactured from Grade 18-8 austenitic stainless steel (A2), the washer delivers strong corrosion resistance in wet, chemical, or outdoor environments. The internal tooth design bites into the mating surface and fastener head to resist loosening under vibration and dynamic loads. The uncoated finish maintains the natural properties of the base alloy. This washer is suitable for assembly work performed by millwrights, maintenance technicians, plumbers, electricians, and general mechanical trades.

This internal tooth lock washer is used in residential, commercial, and industrial fastener assemblies where vibration resistance and corrosion resistance are both required. The M24 sizing makes it appropriate for medium-to-large structural and mechanical connections. Typical applications include equipment mounting, pipe flange assemblies, panel hardware, and general machine assembly. The Grade 18-8 A2 austenitic stainless steel construction makes it a common choice in marine, food-processing, and chemical-adjacent environments where carbon steel would corrode.

Key Features

• Internal tooth design grips fastener head and mating surface to resist rotational loosening under vibration
• Grade 18-8 austenitic stainless steel (A2) for strong corrosion resistance in harsh or wet environments
• 25mm inside diameter sized for M24 fasteners
• 38mm outside diameter provides adequate bearing surface area
• 1.5mm thickness for consistent clamping load distribution
• Uncoated finish — no plating or coating that could degrade in chemical or saltwater exposure
• Conforms to DIN 6797 and DIN 6798 standards

Compatibility

Designed for use with M24 screws, bolts, and fasteners requiring an internal tooth lock washer. Conforms to DIN 6797 and DIN 6798 dimensional and performance standards.

Installation Notes

Install with the teeth facing the fastener head or the surface requiring the locking action — do not install with teeth facing a soft gasket or compressible material, as grip effectiveness will be reduced. Ensure the mating surfaces are clean and free of heavy grease or coatings that would prevent tooth engagement. Torque the fastener to the value specified for the joint design; this washer type requires surface contact pressure to function. This component is typically installed by millwrights, maintenance technicians, or any trade performing structural or mechanical fastener assembly.