Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FIG 252 NO. 7 1-1 4 INCH SIZE found under Collar Zinc by Perko Inc. The National Stock Number assigned to this part is 3040012169249, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like FIG 252 NO. 7 1-1 4 INCH SIZE.