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Pro Series ® All Weather
  • Hardened steel and boron alloy shackles for superior cut to resistance
  • Dual deadbolt locking for extreme resistance to prying
  • High key security:
    • 5-pin tumbler Pro Series cylinders provide tens for thousands of key changes
    • Special spool pins are virtually impossible to pick
  • Rekeyable - replaceable cyinder and shackle

Weather Tough ®
    Lock Functions in All Conditions
  • Exclusive cover protects lock from water, ice, dirt, and grime
  • Heavy steel bodies withstand physical attacks
  • Keyway cover keeps out dust and dirt
Lock Specialty
Commercial Products Discount
15% Off
Quantity
30% Off
Shelf Pack
40% Off
Master Carton
Weather Tough®
(6121, 6125, 6127)
1-5
6-23
24+
Master Lock Model #
Description
Vertical Shackle Clearance (B)
List Price US$ (each)

2-1/8" (54mm) w. Laminated Stel Body. Shackle Dim.: A: 5/16" (8mm) C: 7/8" (22mm)

6121
6121LJ
6121KA
6121MK
Keyed Different
Keyed Different, Extra Length Shackle
Keyed Alike
Master Keyed
1-1/8" (29mm)
2-1/2" (63mm)
1-1/8" (29mm)
1-1/8" (29mm)
$24.51
$26.96
$25.56
$29.46

2-3/8" (61mm) w. Laminated Steel Body. Shackle Dim.: A: 3/8" (10mm) C: 7/8" (22mm)

6125
6125KA
6125MK
Keyed Different
Keyed Alike
Master Keyed
1-1/8" (29mm)
1-3/8" (35mm)
1-3/8" (35mm)
$28.45
$29.50
$33.40

2-5/8" (67mm) w. Laminated Steel Body. Shackle Dim.: A 7/16" (11mm) C: 7/8" (22mm)

6127
6127LH
6127LJ
6127KA
6127MK
Keyed Different
Keyed Different, Extra Length Shackle
Keyed Different, Extra Length Shackle
Keyed Alike
Master Keyed
1-3/8" (35mm)
1-7/8" (48mm)
2-3/8" (60mm)
1-3/8" (35mm)
1-3/8" (35mm)
$33.10
$35.45
$35.55
$34.76
$38.05
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Solid Brass
    Solid Brass Body Provides Extra Corrosion Resistance
  • Optional brass shackles available for 100%
Lock Specialty
Commercial Products Discount
15% Off
Quantity
30% Off
Shelf Pack
40% Off
Master Carton
Solid Brass ( 6830, 6840, 6850 )
1-5
6-23
24+
Master Lock Model #
Description
Vertical Shackle Clearance (B)
List Price US$ (each)

1-9/16" (40mm) w. Solid Brass Body. Shackle Dim.: A: 1/4" (6mm) C: 25/32" (20mm)

6830
6830B
6830LF
6830LT
6830KA
6830MK
Keyed Different
Keyed Different, Brass Shackle
Keyed Different, Extra Length Shackle
Keyed Different, Extra Length Shackle
Keyed Alike
Master Keyed
1-1/16" (27mm)
1-1/16" (27mm)
1-9/16" (40mm)
3" (72mm)
1-1/16" (27mm)
1-1/16" (27mm)
$18.64
$21.19
$20.89
$21.19
$19.69
$23.59

1-3/4" (44mm) w. Solid Brass Body. Shackle Dim.: A: 5/16" (8mm) C: 29/32" (23mm)

6840
6840B
6840LJ
6840KA
6840MK
Keyed Different
Keyed Different, Brass Shackle
Keyed Different, Extra Length Shackle
Keyed Alike
Master Keyed
1-3/16" (30mm)
1-3/16" (30mm)
2-7/16" (61mm)
1-3/16" (30mm)
1-3/16" (30mm)
$22.02
$24.57
$24.47
$23.07
$26.97

2" (51mm) w. Solid Brass Body. Shackle Dim.: A: 3/8" (10mm) C: 29/32" (23mm)

6850
6850B
6850LJ
6850KA
6850MK
Keyed Different
Keyed Different, Brass Shackle
Keyed Different, Extra Length Shackle
Keyed Alike
Master Keyed
1-1/2" (38mm)
1-1/2" (38mm)
2 -1/2" (63mm)
1-1/2" (38mm)
1-1/2" (38mm)
$25.06
$27.61
$27.51
$26.11
$30.01
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