Bulk SAE Flat Washers – Medium Carbon Thru-Hardened, Zinc CR+3, Made in USA – Monster Bolts DIN7500 Not recommended for hollow block

Not recommended for hollow block or brick applications

Self-Threading Power: Taptite-style tri-lobular point taps its own threads—no broken taps or chips

✔️ Marine-grade A4-80 stainless steel for durability in harsh environments

Head / Drive: One-piece unslotted indent hex-washer (9⁄16″ AF) — smooth top forge won’t trap swarf

these UNF fine-thread fasteners are designed for smooth engagement

Bulk SAE Flat Washers – Medium Carbon Thru-Hardened, Zinc CR+3, Made in USA – Monster Bolts DIN7500 Not recommended for hollow blockMonster Overview Fix your project right the first time with SAE Flat Washers Medium Carbon Thru Hardened, Zinc CR+3 from Monster Bolts. These USA made SAE pattern washers feature a smaller outside diameter than USS washers and are ideal for machinery, automotive, equipment assembly, fabrication, and general industrial applications. Manufactured from medium carbon thru hardened steel, these washers deliver a strong, consistent bearing surface under