Great Old-Fashioned Square head lag bolts for a much more traditional look.  Some of the square head lag bolts we sell are old stock and finish can vary from flat to glossy

Most 5/16" Square Bolts have a 1/2" Head and use a 1/2" Square Socket

500 piece discount = 20% off

1000 piece discount = 30% off

This product has minimum quantities

Bolt Measurement Annotation:

Lags Bolts -  Diameter x Length under Head

Head size is not included in standard annotations

 

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  • 5/16" x 1" Square Lag - Black Oxide
    5/16" x 1" Square Lag - Black Oxide
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    $0.35
  • 13mm Square Head Socket
    13mm Square Head Socket
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    $12.50
  • 14.5mm Square Head Socket
    14.5mm Square Head Socket
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    $12.50
  • 5/8" Square Head Socket
    5/8" Square Head Socket
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    $12.50
  • 5/16" x 1.25" Square Lag - Black Oxide
    5/16" x 1.25" Square Lag - Black Oxide
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    $0.35
  • 5/16" x 1.5" Square Lag - Black Oxide
    5/16" x 1.5" Square Lag - Black Oxide
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    $0.40
  • 5/16" x 2" Square Lag - Black Oxide
    5/16" x 2" Square Lag - Black Oxide
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    $0.40
  • 5/16" x 2.5" Square Lag - Black Oxide
    5/16" x 2.5" Square Lag - Black Oxide
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    $0.40
  • 5/16" x 3" Square Lag - Black Oxide
    5/16" x 3" Square Lag - Black Oxide
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    $0.45
  • 1/2" Square Head Socket
    1/2" Square Head Socket
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    $12.50