These great old-fashioned 1/2" square lag bolts add a much more traditional look to any blacksmith's work. Some of the square-head screws and square lag bolts we sell are old stock and the finish can vary fromflat to glossy.

Standard 1/2" bolt has 3/4" head

Try our 3/4" Square Socket to drive these

500-piece discount = 20% off

1000-piece discount = 30% off

These 1/2" square lag bolts have minimum quantities.

Bolt Measurement Annotation:

Lags Bolts -  Diameter x Length under Head

Head size is not included in standard annotations

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  • 1/2" x 1" Square Lag - Black Oxide
    1/2" x 1" Square Lag - Black Oxide
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    $0.40
  • 1/2" x 1.5" Square Lag - Black Oxide
    1/2" x 1.5" Square Lag - Black Oxide
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    $0.45
  • 1/2" x 2" Square Lag - Black Oxide
    1/2" x 2" Square Lag - Black Oxide
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    $0.50
  • 1/2" x 2.5" Square Lags - Black Oxide
    1/2" x 2.5" Square Lags - Black Oxide
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    $0.60
  • 1/2" x 3" Square Lag - Black Oxide
    1/2" x 3" Square Lag - Black Oxide
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    $0.60
  • 1/2" x 4" Square Lag - Black Oxide
    1/2" x 4" Square Lag - Black Oxide
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    $0.65
  • 1/2" x 6" Square Lag - Plain
    1/2" x 6" Square Lag - Plain
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    $1.75
  • 1/2" x 6" Square Lag - Black Oxide
    1/2" x 6" Square Lag - Black Oxide
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    $1.80
  • 3/4" Square Head Socket
    3/4" Square Head Socket
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    $12.50