Complete your U.S. medium artillery restoration with this hard-to-find carriage hardware that serious projects demand. This 155mm M1 / M114 Trail Hinge Pin is a correct original component for the split-trail carriage used on the famous 155mm Howitzer M1 / M114 family, one of the most recognizable American field artillery systems of World War II, Korea, and Vietnam.

The M1 155mm howitzer was standardized in 1941 and later redesignated as part of the M114 series, serving the U.S. Army and many allied nations for decades. Its split-trail carriage was a defining feature of the design, allowing the weapon to be brought into action with the trails spread for stability and controlled traverse. On a howitzer like this, the trail hardware is not just background detail. It is part of the carriage’s structure, and massive structural parts like the hinge pin are exactly the pieces that restorers are always trying to locate.

This Trail Hinge Pin is the kind of original carriage component that helps bring an artillery piece back to proper mechanical and visual correctness. Whether you are restoring a wartime 155mm M1, a Korean War configuration, or a later M114-series display, correct trail-hinge hardware matters.

This item is identified under P/N 7120091 and P/N 5573609. For collectors and restorers, the 7120091 number is especially useful because it corresponds to the correct trail-hinge hardware family in U.S. ordnance listings. These original part numbers are important not only for restoration accuracy but also for matching old paperwork, depot records, and surviving carriage assemblies.

Why This Piece Matters

The M1/M114 155mm howitzer remained one of the U.S. Army’s principal medium artillery weapons for decades, and surviving examples today often lack the carriage components that made them complete. Pins, bushings, brackets, and hinge hardware were frequently lost, swapped, or damaged over time. That is why original carriage parts like this are so desirable now.

The Trail Hinge Pin is especially relevant because it belongs directly to the trail assembly, one of the most distinctive and mechanically important parts of the split-trail carriage. On a full restoration, having the correct hinge hardware helps preserve both the engineering and the appearance of the original weapon.

Ideal For

This part is an excellent fit for:

155mm M1 howitzer restorations
M114 and M114A1 carriage projects
Museum and educational artillery displays
Collectors of original U.S. field artillery parts
Spare parts inventories for historic howitzer preservation

Approx length 21.5", Approx width 4", Approx height 4", Approx weight 44lbs.

Pictures are stock images of our inventory. Unless otherwise noted, you will not be receiving the exact item shown in the pictures. The pictures are representative of the item's general condition. The item you receive might be slightly better, or worse, condition than was shown in the pictures.

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