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Square Head Bolts

59 products

Square head bolts are similar to machine bolts but features a square head instead of the typical hexagonal head. The square head design makes it easier for the operator to grip the bolt when tightening the nut. Square bolts are most commonly used in construction and railway applications.

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Thread Size
  1. 1"-8 4 items
  2. 5/8"-11 10 items
  3. 3/8"-16 9 items
  4. 3/4"-10 6 items
  5. 7/8"-9 3 items
  6. 5/16"-18 8 items
  7. 1/4"-20 3 items
  8. 1/2"-13 15 items
  9. 1-1/4"-7 1 item
Length
  1. 3/4" 1 item
  2. 1" 4 items
  3. 1-1/4" 4 items
  4. 1-1/2" 3 items
  5. 1-3/4" 1 item
  6. 2" 5 items
  7. 2-1/4" 2 items
  8. 2-1/2" 5 items
  9. 2-3/4" 2 items
  10. 3" 5 items
  11. 3-1/4" 1 item
  12. 3-1/2" 5 items
  13. 4" 4 items
  14. 4-1/2" 3 items
  15. 5" 1 item
  16. 5-1/2" 1 item
  17. 6" 5 items
  18. 7" 2 items
  19. 7-1/2" 1 item
  20. 9" 1 item
  21. 10" 1 item
  22. 11" 1 item
  23. 12" 1 item
Min Thread Length
  1. 1.500" 1 item
  2. 0.750" 3 items
  3. 0.875" 7 items
  4. 7/8" 1 item
  5. 1.000" 7 items
  6. 1" 2 items
  7. 1-1/4" 2 items
  8. 1.250" 10 items
  9. 1-1/2" 11 items
  10. 1-3/4" 7 items
  11. 2" 3 items
  12. 2-1/4" 1 item
  13. 2-1/2" 3 items
  14. 2-3/4" 1 item
Head Width
  1. 0.922" 10 items
  2. 0.369" 3 items
  3. 0.492" 8 items
  4. 1.028" 15 items
  5. 0.553" 9 items
  6. 1.107" 6 items
  7. 1.291" 3 items
  8. 1.475" 4 items
  9. 1.844" 1 item
Head Width Tolerance
  1. (-0.009" to +0.009") 9 items
  2. (-0.008" to +0.008") 8 items
  3. (-0.033" to +0.033") 15 items
  4. (-0.007" to +0.007") 3 items
  5. (-0.016" to +0.016") 10 items
  6. (-0.019" to +0.019") 6 items
  7. (-0.022" to +0.022") 3 items
  8. (-0.025" to +0.025") 4 items
  9. (-0.032" to +0.032") 1 item
Head Height
  1. 0.328" 15 items
  2. 0.203" 8 items
  3. 0.250" 9 items
  4. 0.422" 10 items
  5. 0.172" 3 items
  6. 0.594" 9 items
  7. 0.656" 4 items
  8. 0.844" 1 item
Head Height Tolerance
  1. (-0.022" to +0.022") 10 items
  2. (-0.018" to +0.018") 9 items
  3. (-0.020" to +0.020") 15 items
  4. (-0.016" to +0.016") 3 items
  5. (-0.017" to +0.017") 8 items
  6. (-0.026" to +0.026") 9 items
  7. (-0.028" to +0.028") 4 items
  8. (-0.032" to +0.032") 1 item