Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TY O.E.B.STYLE 1731 X-L R found under Buckle by Diving Unlimited International Inc. The National Stock Number assigned to this part is 5340013718621, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TY O.E.B.STYLE 1731 X-L R.