Below is a list of the Best Universal / Best Lock / Best Access interchangeable core padlock model numbers. The table is broken down by each part of the model number — to make the model number for a particular padlock, combine the appropriate values in the first 4-5 columns — for example: 41B72 or 2B43.
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| Model | B | Core | Shackle Codes | Extensions | Shape | Body | Catalog Page | Core | Width | Length | Thickness | Shkl Dia | Shkl Open | Shkl Material | Shrouded | Core Cover | High Security Core | Production Start | Production End | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | B | 5 | 9 | Elliptical | Brass | 1960s Catalog | 5 pin | 1 1/2" | 1 7/16" | 27/32" | 7/32" | 13/16" | Brass, Bronze, or Steel | N | N | N | ||||
| 1 | B | 5 | 9 | Oval | Brass | 1960s Catalog | 5 pin | 1 1/2" | 1 7/16" | 23/32" | 7/32" | 13/16" | Brass, Bronze, or Steel | N | N | N | ||||
| 1 | B | 6 | 0,2,9,12,13,19,22 | Elliptical | Brass | Pre-1980 Catalog | 6 pin | 1 1/2" | 1 19/32" | 27/32" | 7/32" | 13/16" | Brass, Bronze, or Steel | N | N | N | ||||
| 1 | B | 6 | 0,2,9,12,13,19,22 | Oval | Brass | Pre-1980 Catalog | 6 pin | 1 1/2" | 1 19/32" | 23/32" | 7/32" | 13/16" | Brass, Bronze, or Steel | N | N | N | ||||
| 1 | B | 7 | 0,2,10,12,21 | Elliptical | Brass | Pre-1980 Catalog | 7 pin | 1 1/2" | 1 3/4" | 27/32" | 7/32" | 13/16" | Brass, Bronze, or Steel | N | N | N | ||||
| 1 | B | 7 | 0,2,10,12,21 | Oval | Brass | Pre-1980 Catalog | 7 pin | 1 1/2" | 1 3/4" | 23/32" | 7/32" | 13/16" | Brass, Bronze, or Steel | N | N | N | ||||
| 1 | JB | 7 | 36,42,48,54 | Elliptical | Brass | 1985 Catalog | 7 pin | 1 1/2" | 27/32" | 1/8" | Braided Steel | |||||||||
| 2 | B | 0 | Oval | Cast Nickel Silver | 1926 Catalog | 4 pin | 1 1/2" | 1 1/4" | 23/32" | 5/16" | 11/16" | Nickel Silver | N | N | N | 1926 | ||||
| 2 | B | 2 | Oval | Cast Bronze | 1926 Catalog | 4 pin | 1 1/2" | 1 1/4" | 23/32" | 5/16" | 11/16" | Slanted / Bronze | N | N | N | 1926 | Slant Shackle | |||
| 2 | B | 4 | 3 | Oval | Brass | 4 pin | 1 1/2" | 1 3/16" | 3/4" | 5/16" | 3/4" | N | N | N | ||||||
| 2 | B | 5 | Oval | Brass | 1960s Catalog | 5 pin | 1 1/2" | 1 7/16" | 3/4" | 5/16" | 3/4" | Brass, Bronze, or Steel | N | N | N | |||||
| 2 | B | 5 | 0,00,1,02,3,4,09,9,64,69 | Elliptical | Brass | 1960s Catalog | 5 pin | 1 1/2" | 1 7/16" | 27/32" | 5/16" | 3/4" | Brass, Bronze, or Steel | N | N | N | ||||
| 2 | B | 6 | Oval | Brass | 1960s Catalog | 6 pin | 1 1/2" | 1 1/2" | 3/4" | 5/16" | 3/4" | Brass, Bronze, or Steel | N | N | N | |||||
| 2 | B | 6 | 0,00,1,2,3,4,02,04,09,9,62,72 | Elliptical | Brass | Pre-1980 Catalog | 6 pin | 1 1/2" | 1 1/2" | 27/32" | 5/16" | 3/4" | Brass, Bronze, or Steel | N | N | N | ||||
| 2 | B | 6 | Elliptical | Zink Alloy | 6 pin | 1 1/2" | 1 1/2" | 27/32" | 5/16" | 3/4" | Steel / Nickeled | N | N | N | WW II Era | |||||
| 2 | B | 7 | Oval | Brass | 1960s Catalog | 7 pin | 1 1/2" | 1 3/4" | 3/4" | 5/16" | 3/4" | Brass, Bronze, or Steel | N | N | N | |||||
| 2 | B | 7 | 0,00,1,2,3,04,09,9,22 | Elliptical | Brass | Pre-1980 Catalog | 7 pin | 1 1/2" | 1 3/4" | 27/32" | 5/16" | 3/4" | Brass, Bronze, or Steel | N | N | N | ||||
| 2 | B | 7 | Oval | Brass | 1926 Catalog | 4 pin | 1 1/2" | 1 1/4" | 23/32" | 5/16" | 2" x 11/16" | Steel / Nickeled | N | N | N | 1926 | ||||
| 2 | B | 8 | Oval | Brass | 1926 Catalog | 4 pin | 1 1/2" | 1 1/4" | 23/32" | 5/16" | 4" x 11/16" | Steel / Nickeled | N | N | N | 1926 | ||||
| 2 | B | 10 | Elliptical | Bronze | 1926 Catalog | 4 pin | 1 1/2" | 1 1/4" | 27/32" | 3/16" | 11/16" | Bronze | N | N | N | 1926 | ||||
| 2 | B | 11 | Elliptical | Brass | 1926 Catalog | 4 pin | 1 1/2" | 1 1/4" | 27/32" | 5/16" | 11/16" | Brass | N | N | N | 1926 | ||||
| 2 | B | 13 | Oval | Brass | 1926 Catalog | 4 pin | 1 1/2" | 1 1/4" | 23/32" | 5/16" | 11/16" | Brass | N | N | N | 1926 | ||||
| 2 | B | 14 | Elliptical | Brass | 1926 Catalog | 4 pin | 1 1/2" | 1 1/4" | 27/32" | 5/16" | 11/16" | Brass | N | N | N | 1926 | ||||
| 2 | B | 15 | Oval | Cast Bronze | 1926 Catalog | 4 pin | 1 1/2" | 1 1/4" | 23/32" | 5/16" | 11/16" | Bronze | N | N | N | 1926 | ||||
| 2 | B | 20 | Elliptical | Bronze | 1926 Catalog | 4 pin | 1 1/2" | 1 1/4" | 27/32" | 5/16" | 11/16" | Hardened Steel / Galvanized | N | N | N | 1926 | ||||
| 2 | B | 50 | Elliptical | Bronze | 1926 Catalog | 5 pin | 1 1/2" | 1 7/16" | 27/32" | 5/16" | 3/4" | Bronze | N | N | N | 1926 | ||||
| 2 | B | 51 | Elliptical | Solid Bronze | 1926 Catalog | 5 pin | 1 1/2" | 1 7/16" | 27/32" | 5/16" | 3/4" | Brass | N | N | N | 1926 | ||||
| 2 | B | 52 | Elliptical | Extruded Bronze | 1926 Catalog | 5 pin | 1 1/2" | 1 7/16" | 27/32" | 5/16" | 3/4" | Hardened Steel / Galvanized | N | N | N | 1926 | ||||
| 2 | B | 53 | Oval | Brass | 1926 Catalog | 5 pin | 1 1/2" | 1 7/16" | 23/32" | 5/16" | 3/4" | Brass | N | N | N | 1926 | ||||
| 2 | B | 54 | Elliptical | Brass | 1926 Catalog | 5 pin | 1 1/2" | 1 7/16" | 27/32" | 5/16" | 3/4" | Brass | N | N | N | 1926 | ||||
| 2 | B | 60 | Elliptical | Bronze | 1926 Catalog | 6 pin | 1 1/2" | 1 9/16" | 27/32" | 5/16" | 11/16" | Bronze | N | N | N | 1926 | ||||
| 2 | B | 69 | Oval | Brass | 1926 Catalog | 6 pin | 1 1/2" | 1 9/16" | 23/32" | 5/16" | 11/16" | Brass | N | N | N | 1926 | ||||
| 4 | B | 6 | 0,1,2,20,22,72 | Elliptical | Brass | Pre-1980 Catalog | 6 pin | 1 3/4" | 1 19/32" | 13/16" | 11/32" | 29/32" | Brass, Bronze, or Steel | N | N | N | ||||
| 4 | B | 6 | Elliptical | Zink Alloy | 6 pin | 1 3/4" | 1 19/32" | 13/16" | 11/32" | 29/32" | Steel / Nickeled | N | N | N | WW II Era | |||||
| 4 | B | 6 | Elliptical | Steel | 6 pin | 1 3/4" | 1 19/32" | 13/16" | 11/32" | 29/32" | Steel / Nickeled | N | N | N | WW II Era | |||||
| 4 | B | 7 | 0,1,2,22 | Elliptical | Brass | Pre-1980 Catalog | 7 pin | 1 3/4" | 1 3/4" | 13/16" | 11/32" | 29/32" | Brass, Bronze, or Steel | N | N | N | ||||
| 5 | B | 6 | 0,1,2,20,21,22,30,31,32,40,41,42,70,71,72,80,81,82 | Elliptical | Brass | 1960s Catalog | 7 pin | 2" | 1 3/4" | 55/64" | 3/8" | 1 1/32" | Brass, Bronze, or Steel | N | N | N | ~1960 | |||
| 5 | B | 6 | Elliptical | Zink Alloy | 6 pin | 2" | 1 3/4" | 55/64" | 3/8" | 1 1/32" | Steel / Nickeled | N | N | N | WW II Era | |||||
| 5 | B | 7 | 0,1,2,20,21,22,30,31,32,40,41,42,70,71,72,80,81,82 | Elliptical | Brass | 1960s Catalog | 7 pin | 2" | 1 3/4" | 55/64" | 3/8" | 1 1/32" | Brass, Bronze, or Steel | N | N | N | ~1960 | |||
| 5 | B | 10 | Elliptical | Bronze | 1926 Catalog | 6 pin | 2" | 1 3/4" | 7/8" | 3/8" | 1 1/32" | Bronze | N | N | N | 1926 | ||||
| 5 | B | 11 | Elliptical | Brass | 1926 Catalog | 6 pin | 2" | 1 3/4" | 7/8" | 3/8" | 1 1/32" | Brass | N | N | N | 1926 | ||||
| 5 | B | 20 | Elliptical | Bronze | 1926 Catalog | 6 pin | 2" | 1 3/4" | 7/8" | 3/8" | 1 1/32" | Hardened Steel / Galvanized | N | N | N | 1926 | ||||
| 6 | B | 7 | 2,22,72,32,82,42 | Elliptical | Brass | Pre-1980 Catalog | 7 pin | 2" | 2 1/4" | 55/64" | 3/8" | 1 1/32" | Hardened Steel / Galvanized | N | N | N | ||||
| 8 | B | 7 | 2,22,32,42,72,82 | Square | Brass | Pre-1980 Catalog | 7 pin | 2 1/4" | 2 1/4" | 1 1/8" | 3/8" | 1 1/32" | Hardened Steel | N | N | N | ||||
| 11 | B | 7 | 0,20,70,80,2,22,72,82 | Elliptical | Brass, Brass/Chrome | 2017 Catalog | 7 pin | 1 5/8" | 2 1/16" | 25/32" | 1/4" | 7/8" | Bronze or Steel | N | N | N | Current | |||
| 12 | B | 7 | 0,20,70,80,2,22,72,82 | Elliptical | Aluminum | 2007 Catalog | 7 pin | 1 5/8" | 2 1/16" | 25/32" | 1/4" | 7/8" | Bronze or Steel | N | N | N | ~2010 | ~2013 | ||
| 14 | B | 7 | Square | Brass | 1987 Catalog | 7 pin | 1 3/4" | 1 3/4" | 3/4" | 11/32" | 29/32" | Bronze or Steel | N | N | N | 1986 | 1988 | |||
| 21 | B | 7 | 0,20,69,70,80,2,22,72,82 | Elliptical | Brass, Brass/Chrome | 2017 Catalog | 7 pin | 1 25/32" | 2 1/16" | 13/16" | 5/16" | 7/8" | Bronze or Steel | N | N | N | Current | |||
| 21 | B | 7 | 21 | SH | Elliptical | Brass/Chrome | 2007 Catalog | 7 pin | 1 25/32" | 2 1/16" | 13/16" | 5/16" | 7/8" | Cut Resistant Shackle | Y | N | N | Shroud | ||
| 21 | JB | 7 | 18,24,36,42,54 | Elliptical | Brass, Brass/Chrome | 2007 Catalog | 7 pin | 1 25/32" | 2 1/16" | 13/16" | 1/8" | Braided Steel | N | N | N | Cable Shackle | ||||
| 22 | B | 7 | 0,20,70,80,2,22,72,82 | Elliptical | Aluminum | 2007 Catalog | 7 pin | 1 25/32" | 2 1/16" | 13/16" | 5/16" | 7/8" | Bronze or Steel | N | N | N | ~2010 | ~2013 | ||
| 27 | B | 7 | 2,12,22,32,42,52 | Square | Hardened Steel, Plated | Pre-1980 Catalog | 7 pin | 2 1/2" | 2 1/4" | 1 1/8" | 1/2" | 1 1/32" | Hardened Steel | N | N | N | ||||
| 37 | B | 7 | 19 | Square | Hardened Steel, Plated | Pre-1980 Catalog | 7 pin | 2 1/2" | 3 1/2" | 1 1/8" | 1/2" | 1 1/32" | Hardened Steel | Y | N | N | ||||
| 41 | B | 7 | 0,20,70,80,2,22,72,82 | Elliptical | Brass, Brass/Chrome | 2017 Catalog | 7 pin | 1 15/16" | 2 1/16" | 7/8" | 3/8" | 7/8" | Bronze or Steel | N | N | N | Current | |||
| 42 | B | 7 | 0,20,70,80,2,22,72,82 | Elliptical | Aluminum | 2007 Catalog | 7 pin | 1 15/16" | 2 1/16" | 7/8" | 3/8" | 7/8" | Bronze or Steel | N | N | N | ~2010 | ~2013 | ||
| 45 | B | 6 | 2 | Elliptical | Brass | 1960s Catalog | 6 pin | 2" | 1 3/4" | 55/64" | 11/32" | 29/32" | Brass, Bronze, or Steel | N | N | N | ||||
| 45 | B | 7 | 2 | Elliptical | Brass | 1960s Catalog | 7 pin | 2" | 1 3/4" | 55/64" | 11/32" | 29/32" | Brass, Bronze, or Steel | N | N | N | ||||
| 61 | B | 7 | 2,22,72,32,82,42 | Elliptical | Brass, Brass/Chrome | 1995 Catalog | 7 pin | 2 1/8" | 2 1/4" | 15/16" | 3/8" | 1 1/32" | Bronze or Steel | N | N | Y | ||||
| 71 | B | 7 | 2,22,72,32,82,42 | Square | Stainless Steel | 1995 Catalog | 7 pin | 2 1/4" | 2 1/2" | 1 1/8" | 3/8" | 1 1/32" | Hardened Steel | N | Y | Y | Special High Security Core Required - 5C | |||
| 81 | B | 7 | 12,32,52 | Square | Stainless Steel | 1995 Catalog | 7 pin | 2 1/2" | 2 1/2" | 1 1/4" | 1/2" | 1 1/32" | Hardened Steel | N | Y | Y | Special High Security Core Required - 5C | |||
| 91 | B | 7 | 12 | SH | Square | Stainless Steel | 1995 Catalog | 7 pin | 2 1/2" | 3 1/2" | 1 1/4" | 1/2" | 1 1/32" | Hardened Steel | Y | Y | Y | ~1989 | Special High Security Core Required - 5C |
| Length | Bronze | Steel | Cable | Notes |
|---|---|---|---|---|
| 3/4" | 0 | 2 | ||
| 1 1/2" | 20 | 22 | ||
| 2" | 70 | 72 | ||
| 4" | 80 | 82 | ||
| 1" | 21 | For Shrouded 21B | ||
| 3" | 32 | |||
| 5" | 42 | |||
| 18" Cable | 18 | |||
| 24" Cable | 24 | |||
| 36" Cable | 36 | |||
| 42" Cable | 42 | |||
| 54" Cable | 54 |
| Code | Detail |
|---|---|
| M | Case drilled for clevis only |
| M1 | Case drilled, Clevis, bronze chain (606 padlocks only) |
| M3 | |
| M5 | Case drilled, Clevis, galvanized steel chain |
| T | Key Retaining |
| L | Non-key retaining |
| Blank | No Best Logo |
| PS#### | Special Stamp (see Special Stamp List) |
| F3 | Frangible Shackle (11B720 only) |
| ZZ | Double Lock Out |
| S | Car Seal Option - extended case, long blade keys needed |
| WC | Weather Cover Option |
| ZZ | Double lockout / safety first option -- 11B only -- long blade keys needed |
| SH | Shroud option |
| 0/RED | Red Lockout - Vinyl coated - 11B only |
| 0/YEL | Yellow Lockout - Vinyl coated - 11B only |
| 0/BLU | Blue Lockout - Vinyl coated - 11B only |
| 0/BLA | Black Lockout - Vinyl coated - 11B only |
| 0/ORA | Orange Lockout - Vinyl coated - 11B only |
| 0/GRE | Green Lockout - Vinyl coated - 11B only |
| C | Core Cover |
| 8BC |
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