30 Pack Square Plate Washers 5/32" Thick | 1-3/16" x 1-3/16" | 15/64 to 5/8

Engineered for professionals who demand reliability, our 30-piece square washer kit delivers uncompromising performance across six critical bolt sizes. Each set contains precisely 5 washers per size (M5, M6, M8, M10, M12, M14), all manufactured to exact 30mm outer dimensions (30×30mm) with 3mm thickness for maximum load distribution.  Construction: Anchor bolts in concrete foundations, secure steel I-beams, and reinforce bridge joints. Industrial: Stabilize CNC machine bases, agricultural equipment mounts, and production line rollers. Automotive: Upgrade trailer hitches, engine mounting brackets, and suspension linkages. DIY: Perfect for garage shelving, deck railings, and heavy furniture assembly. PACKAGE CONTENTS M5 Square Washers: 30mm × 5 pcs M6 Square Washers: 30mm × 5 pcs M8 Square Washers: 30mm × 5 pcs M10 Square Washers: 30mm × 5 pcs M12 Square Washers: 30mm × 5 pcs M14 Square Washers: 30mm × 5 pcs

• 6-SIZE COMPLETE KIT: Includes 30 galvanized square washers - 5 pieces each for 15/64,9/32,23/64,3/8,33/64,5/8 inch bolts. All washers feature uniform 30mm outer dimensions (30×30mm) and 3mm thickness for versatile applications
• HEAVY-DUTY GALVANIZED STEEL: Hot-dip zinc coating provides 5X better corrosion resistance vs untreated steel, ideal for outdoor construction sites, marine equipment, and humid industrial environments
• SUPERIOR ANTI-LOOSENING PERFORMANCE: Square design creates 40% more surface contact than round washers, preventing bolt vibration failures in automotive engines, machinery bases, and structural joints
• PRECISION ENGINEERED TOLERANCES:punched holes maintain ±0.1mm accuracy (e.g. M5=5.1±0.1mm) ensuring perfect fit with standard bolts from M5 to M14
• MULTI-SCENARIO READY: Trusted by professionals for scaffolding assembly, conveyor system maintenance, truck suspension upgrades, and DIY furniture reinforcement