Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 27ST-73177C 125K found under Chamber Environmental Testing by Tenney Engineering Inc. The National Stock Number assigned to this part is 6636012418838, 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 27ST-73177C 125K.