Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A1934BITEM20 found under Block Spring Retain by Force Wm A And Co Inc. The National Stock Number assigned to this part is 3610007343744, and the Federal Supply Class is 3610 Printing Duplicating And Bookbinding Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A1934BITEM20.