The Master Lock 510D Lock with Key features a 1-3/4 in. (44 mm.) wide laminated steel body for strength and reliability. Lock shackle is 9/32 in. (7 mm.) in diameter and can be adjusted from 5/8 in. (16 mm.) to 2 in. (51 mm.) long for application flexibility. Padlock shackle is made of steel, offering strong resistance from cutting. Key lock contains a warded single locking lever mechanism which minimizes jamming from dirt and grime. Master Lock’s Lifetime Guarantee provides peace of mind from a brand you can trust.
- Indoor and outdoor padlock with adjustable shackle for application flexibility; Best used for residential gates & fences, sheds, workshops & garages, storage lockers, tool boxes and more
- Key lock is constructed with laminated steel body and a hardened steel shackle for strength and security
- Warded locking mechanism minimizes jamming from dirt and grime
- Measurements: 1-3/4 in. (44 mm.) wide lock body; 9/32 in. (7 mm.) diameter shackle is adjustable from 5/8 in. (16 mm.) to 2 in. (51 mm.) length, 13/16 in. (21 mm.) width
- Includes one padlock with two keys; Keys cannot be duplicated

























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