Master Lock 6840MK Brass Pro Series Padlock 

• 1-3/4" (44mm) Wide Solid Brass Body
  
• Hardened Boron Alloy Shackle for Maximum Cut Resistance
• Dual Ball Locking Mechanism Resists Pulling and Prying
• Pro Series Locks Designed for Commercial and Industrial Applications
• Shackle: 1-3/16" (27mm), 1-9/16" (40mm) or 2-7/16" (61mm) Tall
• Cylinder: Rekeyable 5-Pin W6000 Cylinder with Pick-Proof Spool Pins
• Master Keyed (MK): Each padlock in the set will have its own unique key, and a Master Key will open all locks in the set. Master Keys (MK) are Sold Separate 
  
• Available Keyways: Also available with Master Lock W1, W15, W17, W27, W81 & W7000 Keyways (must specify keyway if different from Standard W6000)
• Specs_Width: 1-3/4" Wide; A: 5/16" (8mm) B: 1-3/16" (30mm); C: 29/32" (23mm)
  
• Best Used For: Severe Use Outdoors, including Marine & Offshore Security; Security Gates & Fences; Construction Sites & Equipment

For 6840MK Extra Cut Keys

Master Keys for 6840MK Locks