Porsche Set of steel, low head, yellow zinc dichromate plated bolts for the front seat mounting and rails on 911, 930, 924, 928 and 944 (1975-1984) models. Includes 8 6mm x 1.0 pitch x 12mm Allen socket head bolts and 8 6mm x 1.0 pitch x 16mm Allen socket head bolts for a total of 16 bolts and lock washers. They are used to hold the seat frame to the rails and the seat rails to the floor mounts. Hardness rating of 10.9.