Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 191 935 100 360 042 found under Parts Kitvalve by Keystone Intl Inc. The National Stock Number assigned to this part is 4820016852504, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 191 935 100 360 042.