Master Lock No. 4NKALH 3971 Brass Padlock With Bump Stop

• Commercial Grade Padlock Features Protection from Drilling & Prying
  
• 1-9/16" Wide Reinforced Laminated Brass Body for Superior Strength
• 2" Tall Hardened Steel Shackle for Extra Cut Resistance
• Non-Rekeyable, 4-pin W1 Bump Stop Cylinder Prevents Lock Bumping
• Keying: Pre-Keyed to Key Number 3971 (KA# 3971); 2 Same Keys Included
• Specs_Width: 1-9/32" Wide; A: 9/32" (7mm); B: 2" (51mm); C: 5/8" (16mm)
• Best Used For: Construction Sites & Equipment; Industrial Storefront and Business Gates and Fences, Tool Cribs; Vending Machines  

For 4NKALH 3971 Extra Cut Keys