I do not know what grade they are as they are not marked. I got them in a lot with bolts that are 304 and 316 stainless.
eBay
Fastener Type: Split Ring Lock Washer. We will respond with the requested information quickly. General Interest. Grade/Material: Grade 8 Yellow Zinc. These fasteners are made of thru hardened, Grade 8 yellow zinc.
eBay
Lock Washers in this selection are a zinc plated, case hardened steel finish (CR+3). This finishing process creates corrosion resistant properties within the fastener. Fastener Type: Split Ring Lock Washer.
eBay
Fastener Type: Split Ring Lock Washer. We will respond with the requested information quickly. General Interest. Grade/Material: Grade 8 Yellow Zinc. These fasteners are made of thru hardened, Grade 8 yellow zinc.
eBay
Fastener Type: Split Ring Lock Washer. We will respond with the requested information quickly. General Interest. Grade/Material: Grade 8 Yellow Zinc. These fasteners are made of thru hardened, Grade 8 yellow zinc.
eBay
Fastener Type: Split Ring Lock Washer. We will respond with the requested information quickly. General Interest. Grade/Material: Grade 8 Yellow Zinc. These fasteners are made of thru hardened, Grade 8 yellow zinc.
eBay
Grade/Material: Hot Dipped Galvanized Steel. Fastener Type: Split Ring Lock Washer. We will respond with the requested information quickly. General Interest. Item Condition: New.
eBay
Grade/Material: Hot Dipped Galvanized Steel. Fastener Type: Split Ring Lock Washer. We will respond with the requested information quickly. General Interest. Item Condition: New.
eBay