S-97775A530 0.897" ID x 1.41" OD ASME B18.21.1; MS35335-41 Mil. Spec. External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through external teeth that bite into mating surfaces, preventing loosening in high-stress applications
• Enhanced corrosion protection with zinc-plated steel construction, extending service life in demanding industrial environments
• Exceptional hardness rating of Rockwell C40 ensures teeth maintain locking capability under repeated loading cycles
• Precision dimensional control with 0.897" ID and 1.41" OD provides perfect fit for 7/8" fasteners
• Industry-standard compliance with ASME B18.21.1 and MS35335-41 specifications guarantees reliable performance
• Optimized thickness range (0.052-0.060") allows for proper compression and spring action in assembled joints
• External tooth configuration provides maximum surface contact for superior locking force distribution

Professional Applications & Engineering Value

This external tooth lock washer delivers critical vibration-resistant performance for heavy machinery, construction equipment, and industrial assembly applications where dynamic loads and constant motion threaten joint integrity. The zinc-plated steel construction provides essential corrosion resistance while maintaining the Rockwell C40 hardness needed for teeth to effectively bite into both bolt head and workpiece surfaces. The external tooth location design ensures maximum contact area, creating a mechanical lock that withstands extreme vibration and thermal cycling. Engineered to ASME B18.21.1 and MS35335-41 standards, this 7/8 inch washer solves the common industrial problem of fastener loosening in critical assemblies, reducing maintenance frequency and preventing equipment downtime.

Specification Summary & Compliance

This heavy-duty external tooth lock washer features precise dimensional specifications including 0.897" inner diameter, 1.41" outer diameter, and thickness ranging from 0.052" to 0.060". Manufactured to exacting ASME B18.21.1 and MS35335-41 standards, the washer ensures proper tooth geometry and mechanical properties for reliable locking performance. The Rockwell C40 hardness rating guarantees optimal spring characteristics and tooth durability. The zinc-plated steel construction provides corrosion resistance while maintaining compliance with industry specifications for dimensional tolerances and mechanical properties in locking washer applications.