Specifications for Ribbed Lock Washers

Ribbed lock washers solve the problem of securing screw connections. The valuable properties of the steel spring washer are supplemented by a patented serrated profile. This S and VS series provide maximum security against slackening through vibration. The smoothly rounded serrations uniformly press against the contact surfaces of the bolted connections, gripping them securely without damage. As the joint relaxes the deflection of the spring (H - S) maintains pressure on the nut and the inherent friction on the serrations gives additional protection against loosening. S - Series (Standard duty), VS - Series (Medium Duty) Standard Finish: Spring Steel, hardened, black finish. Also available: Stainless Steel, Phosphor Bronze, Zinc and Cadmium plating   FMP Part# Bolt Size Inch OD Inch ID t H OD ID t H Weight lb/M Package Qty W069-1.6-0000   0.126 0.067 0.014 0.024 3.2 1.7 0.35 0.6 0.04 2000 W069-002-0000   0.157 0.087 0.014 0.024 4.0 2.2 0.35 0.6 0.05 2000 W069-2.5-0000   0.197 0.106 0.018 0.035 4.8 2.7 0.45 0.9 0.10 2000 W069-003-0000 1/8 #5 0.217 0.126 0.018 0.035 5.5 3.2 0.45 0.9 0.12 2000 W069-3.5-0000 #6 0.236 0.146 0.018 0.035 6.0 3.7 0.45 0.9 0.14 2000 W069-004-0000 5/32 #8 0.276 0.169 0.020 0.039 7.0 4.3 0.50 1.0 0.21 1000 W069-005-0000 3/16 #10 0.354 0.209 0.024 0.043 9.0 5.3 0.60 1.1 0.35 1000 W069-006-0000   0.394 0.252 0.028 0.047 10.0 6.4 0.70 1.2 0.48 1000 W069-007-0000   0.472 0.291 0.028 0.051 12.0 7.4 0.70 1.3 0.73 1000 W069-008-0000 5/16 0.512 0.331 0.031 0.055 13.0 8.4 0.80 1.4 0.95 1000 W069-010-0000 3/8 0.630 0.413 0.039 0.063 16.0 10.5 1.00 1.6 1.80 1000 W069-012-0000   0.709 0.512 0.043 0.067 18.0 13.0 1.10 1.7 2.10 500 W069-014-0000   0.866 0.591 0.047 0.079 22.0 15.0 1.20 2.0 3.90 500 W069-016-0000 5/8 0.945 0.669 0.051 0.083 24.0 17.0 1.30 2.1 4.70 500 W069-018-0000   1.063 0.748 0.059 0.091 27.0 19.0 1.50 2.3 7.00 250 W069-020-0000   1.181 0.827 0.059 0.094 30.0 21.0 1.50 2.4 8.70 250 W069-022-0000 7/8 1.299 0.906 0.059 0.098 33.0 23.0 1.50 2.5 10.60 100 W069-024-0000   1.410 1.008 0.071 0.106 36.0 25.6 1.80 2.7 14.00 100 W069-027-0000   1.535 1.126 0.079 0.114 39.0 28.6 2.00 2.9 17.00 100 W069-030-0000 1 1/8 1.772 1.244 0.079 0.126 45.0 31.6 2.00 3.2 25.00 100 W069-036-0000 1 3/8 2.126 1.496 0.098 0.157 54.0 38.0 2.50 4.0 48.00 50