Decoding LR Fastener Part Numbers
Modern LR part numbers for fasteners fall into a pattern which may be decoded to find a detail description for the part… The
list below represents the detail as best I can find out, of how the
Land Rover part numbering system details nuts, bolts and washers. If
you find any errors, exceptions, or have any additions please let me
know e.g. P/No. BT606101L Description : GearBox Bolt
|
| Part Type | Thread | Size | Length | Finish | Unknown |
| BT | 6 | 06 | 10 | 1
| L |
| BT = Bolt | 6 = UNF | In 16ths of an inch for imperial sizes. | x 1/8 inch for imperial. | 0 = Bare or Natural
|
| BX = Bolt (H.T.) | 5 = UNC | Reads directly for metric sizes (e.g. 06 = M6) | x 1mm for metric, except Bolts are x5mm
| 1 = Zinc Passivated
|
| SX = Screw (H.T.) | 4 = Whitworth |
|
| 2 = Nickel / Chrome (external use)
|
| SH = Screw | 1 = Metric |
|
| 3 = Nickel Chrome (internal use)
|
| FS = Screw, Flange Head |
|
|
| 4 = Black (internal use)
|
| WL = Washer, Spring |
|
|
| 5 = Black (external use)
|
| WA = Washer, Plain |
|
|
| 6 = Black Phosphate for controlled torque
|
| WC = Washer, Plain |
|
|
| 7 = Zinc (severe environment)
|
| WM = Washer, Spring |
|
|
| 8 = Black stainless
|
| NT = Nut, Thin |
|
|
|
|
| NH = Nut, Hex |
|
|
|
|
| FN = Nut, Flanged |
|
|
|
|
| NZ = Nut, Nyloc |
|
|
|
|
FX = Nut, Flanged
|
|
|
|
| FX Details unknown - Jam Nut for Exhausts?, Metric??
|
| NY = Nut, Nyloc, Flanged? |
TE = Stud, Threaded, UNF at one end.
|
|
|
|
| TE5 are UNC/UNF, TE6 are UNF/UNF, TE1 unknown
|
TD = Stud, Threaded
|
|
|
|
| TD Details unknown, works with FX nuts
|
Thanks to JonU for thieving this info for his website. I liked his formatting better than mine so I stole it and put it back on here
From Martin Robey Engineering Ltd.
it appears that this list can now be extended. The numbering scheme is
the general British Leyland system, and more information is available here.
|