Bulk SAE Flat Washers – Medium Carbon Thru-Hardened, Plain Finish, Made in USA – Monster Bolts Size:5000 Qty - 3/8" Ensure secure

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vibration-resistant internal threads—no tapping

These heavy-duty fasteners are manufactured from ASTM A574 Alloy Steel and finished with a thermal black oxide + oil coating for mild corrosion protection and a clean

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Bulk SAE Flat Washers – Medium Carbon Thru-Hardened, Plain Finish, Made in USA – Monster Bolts Size:5000 Qty - 3/8" Ensure secureMonster Overview Fix your project right the first time with SAE Flat Washers Medium Carbon Thru Hardened, Plain Finish 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 industrial applications. Manufactured from medium carbon thru hardened steel, these washers deliver a durable, consistent bearing surface under bolt