Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P302B found under Block Tackle by Crosby Group Inc. The National Stock Number assigned to this part is 3940000689173, and the Federal Supply Class is 3940 Blocks Tackle Rigging And Slings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like P302B.