carriage bolt

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carriage bolt

[′kar·ij ‚bōlt]
(design engineering)
A round-head type of bolt with a square neck, used with a nut as a through bolt.

carriage bolt

carriage bolts
A threaded bolt having a circular head, an oval or flat bearing surface, and a means (such as a square shoulder under the head) of preventing rotation of the bolt.
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References in periodicals archive ?
Deck screws are the best way to secure small branches and limbs, while carriage bolts work best for poles larger than 21/2 inches in diameter.
An impact gun is usually necessary to tighten the carriage bolts.
Before attaching legs to board with wood screws, carriage bolts must be inserted in holes.
Carriage bolts are large-diameter bolts with rounded heads and square shoulders and are used for connecting structural pieces.
lag screws on the outside edges and 1/4 x 1-in, carriage bolts through the cabinet bottom on the inside edges.
If you use bolts, choose carriage bolts the lengths shown in the diagram.
If you want the strongest possible workbench, get out your drill and use 3/8-inchdiameter carriage bolts instead of the second screws.
Eight carriage bolts secure a platform to the timbers and the blind is fastened to the platform using just 12 screws.
The iron swing hangers are bolted completely through the swing beams with locking carriage bolts, while main fort supports use heavy duty bolt and lag screw construction.
4-2" x 5/16" carriage bolts (to attach and detach seat)
Insert half-inch diameter carriage bolts through the holes and connect.