M8-1.25 x 25 mm Flanged Hex Head Bolts Flange Hexagon Screws, Full Thread, Alloy Steel, Zinc Plated, Quantity 20

M8-1.25 x 25 mm Flanged Hex Head Bolts Flange Hexagon Screws, Full Thread, Alloy Steel, Zinc Plated, Quantity 20

10.9 GRADE STEEL STRENGTH M8x20mm bolts made of 10.9-grade alloy steel (30% stronger than 8.8-grade) for extreme load-bearing and shear resistance in automotive, machinery, and heavy-duty applications. BLACK ZINC PLATING | 96H SALT SPRAY TEST Durable black zinc coating exceeds 98-hour salt spray resistance (vs. standard black oxide), preventing rust in marine, outdoor, or high-humidity environments. DIN6921 FLANGE DESIGN Precision-engineered flange head (DIN6923 compliant) distributes pressure evenly, reduces vibration loosening, and protects soft surfaces like aluminum or plastics. UNIVERSAL M8-1.25 COMPATIBILITY Perfect for OEM replacements in engines, industrial equipment, marine use, and DIY projects. Includes crush-proof storage case for easy organization. QUICK INSTALLATION GUARANTEE Pre-aligned threads work with 13mm wrenches. Backed by lifetime warranty and 24/9 support for risk-free purchasing.