JACKSONS BLANK 621 - Dr Lock Shop
- Brand: Jacksons
- Product Code: JA621
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Special OrderETA: 1-4 Weeks
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$16.80
- Ex Tax: $15.27
Available Options
JACKSONS BLANK 621
Product Overview
The JACKSONS BLANK 621 is a long safe key blank specifically designed for use with Jacksons JRL6 and JRL6NS 6-lever safe locks. This key type is confirmed as an optional blank by Jackson's official catalogue for these locks.
Key Features
- Stem length: 150 mm
- Shank diameter: 4.76 mm
- Blade size: 13.8 mm (W) x 9 mm (L)
- Pin-type key blank
- No collar
Technical Specifications
| Brand | JACKSONS |
| Bit Length in mm (Along the Stem) | 13.8 |
| Bit Width in mm (Away From the Stem) | 9 |
| Has a Collar | No |
| Main Use | Jacksons JRL6 Safe Lock |
| Pin or Pipe | Pin |
| Stem Diameter in mm | 4.76 |
| Stem Length in mm | 150 |
Ideal Applications
The 150 mm stem length offers extended reach for keys used on thicker safe doors or locks set deeper within the door. The JACKSONS BLANK 621 is part of a range of stem-length options—including models 616, 618, and 620—designed for the JRL6 lock family.
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 across the outside diameter of the round shaft. Match your measurement as closely as possible with the table above before ordering your replacement key from Dr Lock Shop.
Tags: JACKSONS BLANK 621, JA621, Safe Keys
