Trailer Brake Locks
Cover and lock air-brake connections or controls to prevent trailer theft during storage, transfer, loading, and unloading.
Style A locks secure most air-brake connections on semi-trailers. They are built to resist weather for outdoor use. Also known as glad hand locks.
Style B locks secure two release knobs on a flat dashboard. Clamp them over air-brake controls on semi-trucks.
Style C locks secure two release knobs on an angled dashboard. Clamp them over air-brake controls on semi-trucks.
Style D locks quickly secure one knob on a dashboard. Clamp them over a single air-brake control on a straight truck or semi-truck.
Plastic locks resist corrosion better than aluminum locks. Aluminum locks are stronger than those made of plastic. Choose keyed alike locks if you need several locks that open with the same key or keyed differently locks if you need locks that each open with a different key.
| Style | Keying | Ht. | Wd. | Dp. | No. of Keys Included | Key No. | Each | |
Plastic Body | ||||||||
|---|---|---|---|---|---|---|---|---|
| A | Keyed Alike | 2 1/8" | 3 1/4" | 2 1/2" | 2 | 674 | 0000000 | 000000 |
| A | Keyed Differently | 2 1/8" | 3 1/4" | 2 1/2" | 2 | __ | 0000000 | 00000 |
| B | Keyed Alike | 2 1/2" | 5 5/8" | 2 1/2" | 2 | MC16 | 00000000 | 000000 |
| B | Keyed Differently | 2 1/2" | 5 5/8" | 2 1/2" | 2 | __ | 00000000 | 000000 |
| C | Keyed Alike | 2 3/4" | 5 7/8" | 1 3/4" | 2 | MC16 | 00000000 | 000000 |
| C | Keyed Differently | 2 3/4" | 5 7/8" | 1 3/4" | 2 | __ | 00000000 | 000000 |
Aluminum Body  | ||||||||
| A | Keyed Alike | 2 1/8" | 3 1/4" | 2 1/2" | 2 | 674 | 0000000 | 00000 |
| A | Keyed Differently | 2 1/8" | 3 1/4" | 2 1/2" | 2 | __ | 0000000 | 00000 |
| B | Keyed Alike | 2 1/2" | 5 1/2" | 2" | 2 | 646 | 00000000 | 00000 |
| B | Keyed Differently | 2 1/2" | 5 1/2" | 2" | 2 | __ | 00000000 | 00000 |
| D | Keyed Alike | 2 1/2" | 3 3/8" | 2 1/8" | 2 | 646 | 00000000 | 00000 |
| D | Keyed Differently | 2 1/2" | 3 3/8" | 2 1/8" | 2 | __ | 00000000 | 00000 |