FREE SHIPPING ON UPS ORDERS OVER $99!

Master Lock Boron Shackle Pro Series Padlock, Keyed Different, 0.31" Shackle Diameter, Cut Resistant, Pry Resistant, Steel, Black, 1 Each

Item # MLK6321
Ships via
  • MLK6321 Image Thumbnail 1

Save 25% over retail price of $59.88

Delivery: 2 - 4 business days

In Stock

334 Available
This item is on clearance: delivery is subject to availability and this item cannot be returned.
Add to List
NET-30 Terms withCredit KeyLearn More
Ink Toner Icon
Running Low on Ink or Toner?
Use our Ink & Toner Finder
  • Free Shipping Icon Free Shipping
  • Security Icon Secure Shopping
  • NET-30 Icon NET-30 Terms
  • USA Icon Made In USA
Office Expert
Ask Our Office Concierge
Let our knowledgeable staff help you today!

Product Details

Product Highlights
  • Shrouded design protects shackles from bolt cutters
  • Heavy steel body is capable of withstanding physical attacks
  • Hardened boron alloy shackle provides maximum cut-resistance
  • Dual ball locking mechanism resists pulling and prying
  • 5-pin cylinder with spool pins is virtually impossible to pick

Shrouded padlock is designed to protect the shackles from bolt cutters. Padlocks are designed for commercial and industrial applications. Heavy steel body is capable of withstanding physical attacks. Hardened boron alloy shackle provides maximum cut-resistance. Dual ball locking mechanism resists pulling and prying. High-security, rekeyable, five-pin cylinder with spool pins is virtually impossible to pick. Padlock is great for use with truck doors, trailers, vans, moving trucks, manufacturing environments and more.

Product Specifications

Dimensions / Specifications
Unit of Measure EA
Item Dimensions 2.30 in. x 1.90 in. x 4.30 in. (W x H x D)
Item Weight 1.900 lbs
Carton Pack Quantity 24 EA
This item is sold by the EA
Shipping Info
Can Ship via UPS? Yes
Can Ship via Air Carrier? Yes
Hazmat restrictions? No
Additional Information
Considered Green (less environmental impact)? No
Made of Some or All Recycled Materials? No
Item Specifications
Manufacturer Master Lock, LLC
Manufacturer Part Number 6321
Product Line ProSeries
Product Name Boron Shackle Pro Series Padlock
Packaged Quantity 1 Each
Package Type Retail
Product Type Padlock
Shackle Diameter 0.31"
Shackle Height 0.75"
Shackle Width 0.88"
Key Type Keyed Different
Features Rekeyable
Durability Cut Resistant
Durability Pry Resistant
Color Family Black
Product Color Black
Product Material Steel
Shackle Material Hardened Boron Alloy
Height 1"
Width 2.1"
Length 4"
Recycled No
Assembly Required No
Country of Origin United States
Limited Warranty Lifetime
Additional Warranty Information If the product fails due to defect in material or workmanship during the life of the product, Master Lock will replace it free of charge.
Manufacturer Info
Brand Master Lock®  (website)
Brand Contact 800-308-9242
Manufacturer SKU 6321
Retail GTIN (UPC) 00071649040078
Country of Origin US
UNSPSC Number 46171501
Product ID 22242

Customer Reviews

Questions & Answers

Accessories For This Product

  • We are:
  • Inc 500 Award Winner
  • GSA Contract Vendor
  • HP Authorized Seller
  • SSL Protected
  • High Customer Rating
  • BBB A+ Rating
  • TrustedSite Certified Secure