lag screw

¹ American  

noun

1. a heavy wood screw having a square or hexagonal head driven by a wrench.

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lag-screw ² American  

[lag-skroo] / ˈlægˌskru /

verb (used with object)

1. to fasten with a lag screw.

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lag screw British  

noun

1. a woodscrew with a square head

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Etymology

Origin of lag screw

First recorded in 1870–75

Example Sentences

They’ve also replaced large lag screws — because why hand crank something for 10 minutes, when your power tool can do the work in 10 seconds?

From Seattle Times

Holes are provided in the Press for mounting by lag screws or bolts.

From Project Gutenberg

The girder molds were 1½-in. stuff, and to the side pieces were nailed 1×4-in. cleats; the bottom and side pieces were connected by ⅜×4-in. lag screws spaced 28 ins. apart.

From Project Gutenberg

These mortises need not be deep if the joints are to be reinforced later with lag screws as is the clock shown.

From Project Gutenberg

Bore through the posts and part way into the ends of the end rails for the lag screws.

From Project Gutenberg