Change Notice CN-0196 AT4181 Change of Material of Rubber O-ring Type of Change: Engineering Product AT4181 Part Number Appearance Example The material of the rubber o-ring (AT4181P) in the Splashproof Boot will change. (8.0) Dia .315 (14.8) .583 See table below for switch series that are compatible with this Boot. M12 P1 (18.6) .732 (24.3) .957 (21.5) Dia .846 (1.0) .039 (12.1) Dia .476 (17.5) Dia .689 AT4181P Material of Rubber O-ring Before Change After Change Natural rubber NBR Series or Part Numbers AT4181 consists of three seperate parts, AT4181A (Boot), AT401N (Nut) & AT4181P (O-ring) Panel Thickness (Maximum) • M Series B2 Toggles with 12mm B1 & B3 Bushings • P Series B Toggles with 12mm Bushing • S31 ~ 39, S41 ~ 49, S31F ~ 33F, S41F ~ S43F, S31T ~ 33T, S41T ~ 43T • S301 ~ 309, S331 ~ 339, S301F, S331F ~ 333F, S335F, S301T ~ 309T, S331T ~ 339T • S421 ~ 429, S421T ~ 429T 5.0mm (.197”) • WT11S ~ 29S, WT11T ~ 29T, WT11L ~ 29L 3.5mm (.138”) • S1A ~ 7A, S21A, S1F ~ 7F, S21F • S114, S116 • S1AW ~ 9AW, S21AW, S25AW ~ 29AW 3.0mm (.118”) Effective Date Change will be effective with May 2012 production. www.nkkswitches.com 1.877.2BUYNKK (228.9655) Engineering Department 7850 East Gelding Drive • Scottsdale, AZ 85260 Telephone 480.991.0942 • Fax 480.998.1435 12/13/11