Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SMD-649952 found under Sling Assembly Vehicle Lifting by Datron World Communications Inc. The National Stock Number assigned to this part is 3940013824908, 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 SMD-649952.