Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 120-225C4-11 found under Screw Close Tolerance by Pilgrim Screw Corporation. The National Stock Number assigned to this part is 5305015624568, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 120-225C4-11.