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Black rectangular padlock with silver boron alloy shackle, 64 mm body, 11 mm shackle diameter

Master Lock

Master Lock 6230-B ProSeries Padlock 64 mm Body 11 mm Shackle 5 Pin 6000 Keyway

SKU CH-80AC-0GCWV MPN 6230-B

Heavy-duty padlock with a 64 mm chrome body, 11 mm boron-alloy shackle and re-keyable 5-pin 6000 cylinder for institutional use

  • Security gradeHeavy Duty
  • Location typeInstitutional and Industrial
  • Surface finishBlack
  • Sold asEach
  • Product typePadlock
  • Key featuresProSeries
  • Heavy-duty security with 5-pin spool cylinder virtually impossible to pick
  • Rustproof chrome body extends service life in harsh environments
  • Extra-tough 11 mm boron alloy shackle resists cutting and sawing
  • Dual ball-bearing locking mechanism defeats pulling and prying attacks
  • Re-keyable 6000 keyway allows cylinder changes without replacing lock

ProSeries Padlock 64 mm Body

The Master Lock 6230-B is a heavy-duty padlock built for institutional and industrial security. Its 64 mm wide chrome body resists rust while a boron alloy shackle withstands cutting and sawing attempts. The lock uses a 5-pin tumbler cylinder with spool pins that resist picking. This design suits gates, storage units and perimeter fencing where prolonged exposure is expected.

Verify Shackle Clearance And Keyway

Before ordering, measure the hasp or chain link opening to confirm the 11 mm shackle diameter fits through. The vertical clearance inside the shackle is 29 mm, so ensure the mounting point accommodates that height. The cylinder uses a 6000 keyway; existing master-key systems must support this profile for integration. The lock is sold keyed different and is re-keyable by a locksmith if required.

Sustained Outdoor And Attack Resistance

Under continuous outdoor exposure the chrome-plated body prevents corrosion that would seize lesser locks. The dual ball-bearing locking mechanism resists sustained pulling and prying forces without the shackle releasing. Spool pins inside the cylinder maintain pick resistance even after repeated manipulation attempts. The boron alloy shackle retains hardness during prolonged cutting attacks, making it suitable for high-risk sites.

How it compares

Measured against everything we stock in Door Lock Sets & Deadbolts, at today’s prices. Recalculated every night.

Price $18.99
Cheaper than about 72% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameMasterLock
Model name6230-B
Product typePadlock
Size & build
Surface finishBlack
More details
Security gradeHeavy Duty
Location typeInstitutional and Industrial

Questions about this item

Does the 6230-B padlock come with keys or do I need to order them separately?

The lock is sold keyed-different with two keys included in the box; no extra purchase is required for standard operation.

Should I choose the 64 mm body with the 11 mm boron alloy shackle or a smaller model for my gate?

The 64 mm wide body and 11 mm diameter shackle give the highest cut resistance in the ProSeries line, so select this size when maximum physical security is the priority.

How does the 5-pin 6000 keyway perform against picking once the lock is installed?

The cylinder uses five spool pins in the 6000 keyway, making manipulation extremely difficult and providing strong pick resistance in real-world use.

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