Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number STYLE 87-5 PLAIN found under Envelope Mailing by Western States Envelope Company. The National Stock Number assigned to this part is 7530005774849, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like STYLE 87-5 PLAIN.