JACKSONS BLANK 557 - Dr Lock Shop
- Brand: Jacksons
- Product Code: JA557
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Special OrderETA: 1-6 Weeks
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$16.80
- Ex Tax: $15.27
Available Options
JACKSONS BLANK 557
Product Overview
The JACKSONS BLANK 557 is a precision key blank specifically designed for the Jacksons JC256 Cupboard Lock. Manufactured to exact specifications, this key blank guarantees reliable performance and perfect compatibility.
Key Features
- Stem length: 50 mm
- Stem diameter: 3.97 mm
- Blade dimensions: 13.89 mm (W) x 9.53 mm (L)
- Blade thickness: 2.5 mm
Technical Specifications
| Brand | JACKSONS |
| Bit Length in mm (Along the Stem) | 13.89 |
| Bit Thickness in mm | 2.5 |
| Bit Width in mm (Away From the Stem) | 9.53 |
| Has a Collar | No |
| Main Use | Jacksons JC256 Cupboard Lock |
| Pin or Pipe | Pin |
| Stem Diameter in mm | 3.97 |
| Stem Length in mm | 50 |
Ideal Applications
Designed for the Jacksons JC256 Cupboard Lock, the JACKSONS BLANK 557 is perfect for locksmiths and professionals seeking a dependable key blank for cupboard security solutions.
Key Gauge to Imperial / Metric Conversion
Use this key gauge conversion table from Dr Lock Shop to identify the correct gauge for old pin keys, pipe keys, safe keys, and other traditional keys. Measure the diameter of the key shaft and compare it with the imperial or metric measurements below.
Key Gauge | Inches (Decimal) | Millimetres (mm) |
1 | 0.300" | 7.60 mm |
2 | 0.276" | 7.01 mm |
2½ | 0.264" | 6.71 mm |
3 | 0.252" | 6.40 mm |
3½ | 0.242" | 6.15 mm |
4 | 0.232" | 5.89 mm |
4½ | 0.222" | 5.64 mm |
5 | 0.212" | 5.38 mm |
5½ | 0.202" | 5.13 mm |
6 | 0.192" | 4.88 mm |
6½ | 0.184" | 4.67 mm |
7 | 0.176" | 4.47 mm |
7½ | 0.168" | 4.27 mm |
8 | 0.160" | 4.06 mm |
9 | 0.144" | 3.66 mm |
10 | 0.128" | 3.25 mm |
11 | 0.116" | 2.95 mm |
12 | 0.102" | 2.62 mm |
Choosing the correct key gauge: Measure the outside diameter of the round shaft and match your measurement as closely as possible with the table above before ordering your replacement key from Dr Lock Shop.
Tags: JACKSONS BLANK 557, JA557, Pin Keys – Solid Shaft
