ARMY TM 5-5420-212-23
MARINE CORPS TM 08676A-23/2
Panel pins are used to connect top panels, bottom panels, junction panels, end taper panels, bankseat beams,
and for securing the launching nose through the launching nose roller and anchorage tube. The panel pin has a shoulder
at one end and is slotted at the other end. There are holes in the slot for the retainer clip.
All pins are fitted into the bridge by hand from the outside of the girder. When pin jaws, resilient mounts and
guide slots are properly mated, the pin can be inserted easily by hand. Retainer clips are put through the hole at the end
of the pin for safety. It is not necessary to put a retainer clip through the pin connecting the bankseat beam to the end
taper panel, and the pin connecting bottom panel to top panel, but it is good practice to clip all pins to prevent confusion.
When constructing a long DSB (13 thru 22 bay), it is necessary to ensure that retainer clips are placed
horizontally through panel pins in the bottom chord of bottom panels.
DO NOT hammer on panel pins. Damage to pin or bridge component may result.
Headless Panel Pin
The headless panel pin is similar to the panel pin except that it has no shoulder and it is slotted at both ends.
Being slightly longer and headless, it has a longer reach through component pin jaws.
In the 9 thru 12 bay single story bridge, the headless panel pin is used to connect the top panels of the second
and third bay so that the launching nose cross girder posts can be secured at this point.
In the double story bridge, the headless panel pin is used in:
the post hole on the junction panel for connection of the launching nose cross girder post.
the pin jaws of the first bay top panel connecting it to the junction panel.
the top hole of the launching nose link to secure the second story nose to the first story.