Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B-134902 ITEM 28 found under Hatch Marine by Railway Specialties Corporation. The National Stock Number assigned to this part is 2040014600990, and the Federal Supply Class is 2040 Marine Hardware And Hull Items. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B-134902 ITEM 28.