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  1. Trailer Door Hinges
  2. Redline
  3. Hinge Pin
  4. Build Your Own Hinge
  5. 6-3/4 Inch Long
  6. 1/2 Inch Diameter
1/2" Diameter Hinge Pin, 6-3/4" Long

1/2" Diameter Hinge Pin, 6-3/4" Long

Item # HP634
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Our Price: $6.93
Trailer Door Hinges
Orders above $99 qualify for Free Shipping
Shipping Weight: 0.38 lbs
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Hinge pin nipples are aligned and welded to either the outer frame or the gate/door so that the hinge pin can be inserted to create a custom, heavy-duty hinge. Lowest Prices for the best trailer door hinges from Redline. 1/2" Diameter Hinge Pin, 6-3/4" Long part number HP634 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (2)
  • Q & A (0)
  • Videos (1)
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Redline Trailer Door Hinges - HP634

  • Hinge Pin
  • Build Your Own Hinge
  • 6-3/4 Inch Long
  • 1/2 Inch Diameter
  • Redline

Hinge pin nipples are aligned and welded to either the outer frame or the gate/door so that the hinge pin can be inserted to create a custom, heavy-duty hinge.


  • Build your own hinge
  • Great for trailers and agricultural applications


  • Outer diameter 1/2"
  • 6-3/4" long

HP634, Hinge Pin 1/2" OD 6 3/4" Long

Video of 1/2" Diameter Hinge Pin, 6-3/4" Long

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Redline Enclosed Trailer Parts - Doors - HP634 Review

Customer Reviews

1/2" Diameter Hinge Pin, 6-3/4" Long - HP634

Average Customer Rating:  5.0 out of 5 stars   (2 Customer Reviews)

Hinge pin nipples are aligned and welded to either the outer frame or the gate/door so that the hinge pin can be inserted to create a custom, heavy-duty hinge.


Extremely fast shipping and good quality parts for the money spent


Just what I was looking for works like it should


See what our Experts say about this Redline Trailer Door Hinges

  • Door Hinge Pin For 1997 Sundowner 2 Horse Gooseneck Trailer
    I have attached a link to the hinge pins we offer you can check out. The hinge pins are either 1/2 inch or 3/4 inch diameter. We do not carry hinge pins that would be as long as the width of your trailer door.
    view full answer...
  • Replacement Hinge Pin 6-1/2 Inches by 1/2 Inch
    We don't have a 6-1/2 inch length but we do have the 1/2" Diameter Hinge Pin, 6-3/4" Long # HP634 which can be cut or ground down to the 6-1/2 inch length.
    view full answer...
  • Can a Piano Style Hinge be Used on a Trailer Ramp Door that is 94 Inches Wide
    The way a trailer ramp door is hinged is going to depend on how the manufacturer decides it needs to be hung so it really could be one long piece or several pieces. The hinge(s) may or may not extend all the way to the edges but most of the ones I have seen do extend the length of the door. Piano hinge # H300 is decent sized. It is 3 inches wide so it is a pretty good size. It wouldn't be used on a heavy equipment trailer or anything like that but instead be used on smaller enclosed trailers....
    view full answer...
  • Removing Rusted Hinge Pin on Trailer
    You can try heating the nipple with a torch and then using a punch to drive out the pin. Be gentle with the heat, as the idea is to get the nipple to expand without heating the pin to the extent that it expands as well. When driving the pin out, be careful not to mushroom the end of the pin. For multiple hinges, you might have to remove the pins a little at a time. If that does not work, you will have to use an angle grinder to remove the nipple and pin completely, then start over with...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Jeff D
Installed by:
Jeff D

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