Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 7708253 found under Guide Valve Stem by Lasmer Industries Inc. The National Stock Number assigned to this part is 2990000400866, and the Federal Supply Class is 2990 Miscellaneous Engine Accessories Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 7708253.