Master Lock One Key System Padlock

Universal Pin padlocks for keying convenience. Pinned to customer's key in minutes. Operate with same key as Master Lock Padlocks (Nos.1-6). Laminated steel bodies for superior strength. Hardened steel (Nos.1 and 3) hardened boron alloy (No.5) shackles. 4-pin tumbler cylinders helps prevent picking. 1UP and 1UPLJ have 1-3/4" wide case, 5/16" diameter shackle, and 3/4" horizontal shackle clearance. 3UP and 3UPLF have 1-9/16" wide case, 9/32" diameter shackle, and 15/16" horizontal shackle clearance. 5UP and 5UPLF have 2" wide case, 3/8" diameter shackle, and 15/16" horizontal shackle clearance. #376 - PADLOCK KEYING TOOL must be ordered separately - Orgill SKU # 659.6365.