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Machine Screws

Machine Screws

Bolt and Nut Australia carry the largest range of all types of Machine screws. Machine screws are very popular because of the range of head styles, diameters, lengths and finishes they are available in and they are low cost. We have Button head, Countersunk head, Cheese head, Mushroom head, Pan head, Raised head, Round Head and Wing head in phillips, slotted, torx, post torx, post hex, one way, snake eye and combination drive. You can buy them in Stainless Steel A2-70 G304, Stainless Steel A4-70 G316, Zinc Plated, Brass and Zinc Black. Our range starts at M1.6 to M10 Metric Coarse and #0 - #12, 3/16" to 5/16" American inch threads UNC (unified national coarse), UNF (unified national fine) and BSW (british standard whitworth). Technical specifications, printable datasheets and product cad drawings available online. Delivered freight free from our Brisbane warehouse with no minimum order qty or spend.

  1. Button Flange Head
  2. Button Head
  3. Cap Head
  4. Cheese Head
  5. Countersunk Head
  6. Mushroom Head
  7. Pan Head
  8. Raised Head
  9. Round Head
  10. Sems
  11. Thread Rolling Screws
  12. Wing Head
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30 Items found

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  1. Free shipping

    In stock

    #8-32 TPI UNC Coarse Stainless A2-70 G304 Pan Phillips (PH2) Machine Screws ASNI B18.6.3
    #8-32 TPI UNC Coarse Stainless A2-70 G304 Pan Phillips (PH2) Machine Screws ASNI B18.6.3
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  2. Free shipping

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    #10-24 (3/16) x 24 TPI UNC Coarse Plain Black Uncoated Grade 10.9 Countersunk Head Socket (1/8" Key) Screws ANSI B 18.3
    #10-24 (3/16) x 24 TPI UNC Coarse Plain Black Uncoated Grade 10.9 Countersunk Head Socket (1/8" Key) Screws ANSI B 18.3
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  3. Free shipping

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    #10-32 (3/16") x 32 TPI UNF Fine Stainless A2-70 G304 Socket (5/32" Key) Head Cap Screws ANSI B18.3
    #10-32 (3/16") x 32 TPI UNF Fine Stainless A2-70 G304 Socket (5/32" Key) Head Cap Screws ANSI B18.3
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  4. Free shipping

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    #10-32 (3/16") x 32 TPI UNF Fine Plain Black Uncoated Grade 12.9 Socket (5/32" Key) Head Cap Screws ANSI B 18.3
    #10-32 (3/16") x 32 TPI UNF Fine Plain Black Uncoated Grade 12.9 Socket (5/32" Key) Head Cap Screws ANSI B 18.3
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  5. Free shipping

    In stock

    #10-32 (3/16") x 32 TPI UNF Fine Plain Black Uncoated Grade 10.9 Button Head Socket (1/8" Key) Screws ANSI B 18.3
    #10-32 (3/16") x 32 TPI UNF Fine Plain Black Uncoated Grade 10.9 Button Head Socket (1/8" Key) Screws ANSI B 18.3
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  6. Free shipping

    In stock

    3/16" x 24 TPI BSW Coarse Stainless A2-70 G304 Round Slot Machine Screws BS 450
    3/16" x 24 TPI BSW Coarse Stainless A2-70 G304 Round Slot Machine Screws BS 450
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  7. Free shipping

    In stock

    3/16" x 24 TPI BSW Coarse Stainless A4-70 G316 Round Slot Machine Screws BS 450
    3/16" x 24 TPI BSW Coarse Stainless A4-70 G316 Round Slot Machine Screws BS 450
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  8. Free shipping

    In stock

    1/4" x 20 TPI BSW Coarse Stainless A2-70 G304 Pan Phillips (PH3) Machine Screws ASNI B18.6.3
    1/4" x 20 TPI BSW Coarse Stainless A2-70 G304 Pan Phillips (PH3) Machine Screws ASNI B18.6.3
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  9. Free shipping

    In stock

    1/4" x 20 TPI UNC Coarse Stainless A2-70 G304 Socket (3/16" Key) Head Cap Screws ANSI B18.3
    1/4" x 20 TPI UNC Coarse Stainless A2-70 G304 Socket (3/16" Key) Head Cap Screws ANSI B18.3
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    In stock

    1/4" x 20 TPI UNC Coarse Stainless A4-70 G316 Socket (3/16" Key) Head Cap Screws ANSI B18.3
    1/4" x 20 TPI UNC Coarse Stainless A4-70 G316 Socket (3/16" Key) Head Cap Screws ANSI B18.3
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  11. Free shipping

    In stock

    1/4" x 20 TPI UNC Coarse Plain Black Uncoated Grade 12.9 Socket (3/16" Key) Head Cap Screws ANSI B 18.3
    1/4" x 20 TPI UNC Coarse Plain Black Uncoated Grade 12.9 Socket (3/16" Key) Head Cap Screws ANSI B 18.3
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  12. Free shipping

    In stock

    1/4" x 20 TPI BSW Coarse Stainless A2-70 G304 Round Slot Machine Screws BS 450
    1/4" x 20 TPI BSW Coarse Stainless A2-70 G304 Round Slot Machine Screws BS 450
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  13. Free shipping

    In stock

    1/4" x 20 TPI BSW Coarse Stainless A2-70 G304 Countersunk Phillips (PH3) Machine Screws ASNI B18.6.3
    1/4" x 20 TPI BSW Coarse Stainless A2-70 G304 Countersunk Phillips (PH3) Machine Screws ASNI B18.6.3
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  14. Free shipping

    In stock

    1/4" x 28 TPI UNF Fine Stainless A2-70 G304 Socket (3/16" Key) Head Cap Screws ANSI B18.3
    1/4" x 28 TPI UNF Fine Stainless A2-70 G304 Socket (3/16" Key) Head Cap Screws ANSI B18.3
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  15. Free shipping

    In stock

    1/4" x 28 TPI UNF Fine Plain Black Uncoated Grade 12.9 Socket (3/16" Key) Head Cap Screws ANSI B 18.3
    1/4" x 28 TPI UNF Fine Plain Black Uncoated Grade 12.9 Socket (3/16" Key) Head Cap Screws ANSI B 18.3
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  16. Free shipping

    In stock

    5/16" x 18 TPI UNC Coarse Zinc Plated Grade 12.9 Socket (1/4" Key) Head Cap Screws ANSI B 18.3
    5/16" x 18 TPI UNC Coarse Zinc Plated Grade 12.9 Socket (1/4" Key) Head Cap Screws ANSI B 18.3
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  17. Free shipping

    In stock

    5/16" x 18 TPI UNC Coarse Plain Black Uncoated Grade 12.9 Socket (1/4" Key) Head Cap Screws ANSI B 18.3
    5/16" x 18 TPI UNC Coarse Plain Black Uncoated Grade 12.9 Socket (1/4" Key) Head Cap Screws ANSI B 18.3
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  18. Free shipping

    In stock

    5/16" x 18 TPI BSW Coarse Stainless A2-70 G304 Pan Phillips (PH4) Machine Screws ASNI B18.6.3
    5/16" x 18 TPI BSW Coarse Stainless A2-70 G304 Pan Phillips (PH4) Machine Screws ASNI B18.6.3
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  19. Free shipping

    In stock

    3/8" x 16 TPI UNC Coarse Stainless A4-70 G316 Socket (5/16" Key) Head Cap Screws ANSI B18.3
    3/8" x 16 TPI UNC Coarse Stainless A4-70 G316 Socket (5/16" Key) Head Cap Screws ANSI B18.3
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  20. Free shipping

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    3/8" x 16 TPI UNC Coarse Stainless A2-70 G304 Button Post Torx (T45) Security Machine Screws
    3/8" x 16 TPI UNC Coarse Stainless A2-70 G304 Button Post Torx (T45) Security Machine Screws
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  21. Free shipping

    In stock

    3/8" x 24 TPI UNF Fine Stainless A2-70 G304 Socket (5/16" Key) Head Cap Screws ANSI B18.3
    3/8" x 24 TPI UNF Fine Stainless A2-70 G304 Socket (5/16" Key) Head Cap Screws ANSI B18.3
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  22. Free shipping

    In stock

    3/8" x 24 TPI UNF Fine Plain Black Uncoated Grade 12.9 Socket (5/16" Key) Head Cap Screws ANSI B 18.3
    3/8" x 24 TPI UNF Fine Plain Black Uncoated Grade 12.9 Socket (5/16" Key) Head Cap Screws ANSI B 18.3
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  23. Free shipping

    In stock

    7/16" x 14 TPI UNC Coarse Stainless A2-70 G304 Socket (3/8" Key) Head Cap Screws ANSI B18.3
    7/16" x 14 TPI UNC Coarse Stainless A2-70 G304 Socket (3/8" Key) Head Cap Screws ANSI B18.3
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    In stock

    7/16" x 14 TPI UNC Coarse Plain Black Uncoated Grade 12.9 Socket (3/8" Key) Head Cap Screws ANSI B 18.3
    7/16" x 14 TPI UNC Coarse Plain Black Uncoated Grade 12.9 Socket (3/8" Key) Head Cap Screws ANSI B 18.3
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  25. Free shipping

    In stock

    1/2" x 13 TPI UNC Coarse Stainless A2-70 G304 Socket (3/8" Key) Head Cap Screws ANSI B18.3
    1/2" x 13 TPI UNC Coarse Stainless A2-70 G304 Socket (3/8" Key) Head Cap Screws ANSI B18.3
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  26. Free shipping

    In stock

    1/2" x 13 TPI UNC Coarse Stainless A4-70 G316 Socket (3/8" Key) Head Cap Screws ANSI B18.3
    1/2" x 13 TPI UNC Coarse Stainless A4-70 G316 Socket (3/8" Key) Head Cap Screws ANSI B18.3
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  27. Free shipping

    In stock

    5/8" x 11 TPI UNC Coarse Plain Black Uncoated Grade 12.9 Socket (1/2" Key) Head Cap Screws ANSI B 18.3
    5/8" x 11 TPI UNC Coarse Plain Black Uncoated Grade 12.9 Socket (1/2" Key) Head Cap Screws ANSI B 18.3
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  28. Free shipping

    In stock

    3/4" x 10 TPI UNC Coarse Plain Black Uncoated Grade 12.9 Socket (5/8" Key) Head Cap Screws ANSI B 18.3
    3/4" x 10 TPI UNC Coarse Plain Black Uncoated Grade 12.9 Socket (5/8" Key) Head Cap Screws ANSI B 18.3
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  29. Free shipping

    In stock

    1" x 8 TPI UNC Coarse Plain Black Uncoated Grade 12.9 Socket (3/4" Key) Head Cap Screws ANSI B 18.3
    1" x 8 TPI UNC Coarse Plain Black Uncoated Grade 12.9 Socket (3/4" Key) Head Cap Screws ANSI B 18.3
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  30. Free shipping

    In stock

    1-1/4" x 7 TPI UNC Coarse Plain Black Uncoated Grade 12.9 Socket (7/8" Key) Head Cap Screws ANSI B 18.3
    1-1/4" x 7 TPI UNC Coarse Plain Black Uncoated Grade 12.9 Socket (7/8" Key) Head Cap Screws ANSI B 18.3
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System of Measurement
  1. Imperial 30 items
Size
  1. #8-32 1 item
  2. 3/16" (#10-24) 2 items
  3. #10-24 (3/16") 1 item
  4. #10-32 (3/16") 3 items
  5. 1/4" 8 items
  6. 5/16" 3 items
  7. 3/8" 4 items
  8. 7/16" 2 items
  9. 1/2" 2 items
  10. 5/8" 1 item
  11. 3/4" 1 item
  12. 1" 1 item
  13. 1-1/4" 1 item
Size & Thread Pitch
  1. #8-32 TPI UNC 1 item
  2. 3/16" (#10-24) x 24 TPI BSW 2 items
  3. #10-24 (3/16") x 24 TPI UNC 1 item
  4. #10-32 (3/16") x 32 TPI UNF 3 items
  5. 1/4" x 20 TPI UNC 3 items
  6. 1/4" x 20 TPI BSW 3 items
  7. 1/4" x 28 TPI UNF 2 items
  8. 5/16" x 18 TPI BSW 1 item
  9. 5/16" x 18 TPI UNC 2 items
  10. 3/8" x 16 TPI UNC 2 items
  11. 3/8" x 24 TPI UNF 2 items
  12. 7/16" x 14 TPI UNC 2 items
  13. 1/2" x 13 TPI UNC 2 items
  14. 5/8" x 11 TPI UNC 1 item
  15. 3/4" x 10 TPI UNC 1 item
  16. 1" x 8 TPI UNC 1 item
  17. 1-1/4" x 7 TPI UNC 1 item
Thread Type
  1. UNC / BSW - Coarse 20 items
  2. BSW - Coarse 3 items
  3. UNF - Fine 7 items
Lengths in mm and inches
  1. 3mm 16 items
  2. 4mm 42 items
  3. 5mm 59 items
  4. 6mm 124 items
  5. 8mm 163 items
  6. 10mm 205 items
  7. 12mm 228 items
  8. 14mm 2 items
  9. 15mm 5 items
  10. 16mm 239 items
  11. 20mm 261 items
  12. 25mm 250 items
  13. 30mm 234 items
  14. 35mm 161 items
  15. 40mm 215 items
  16. 45mm 133 items
  17. 50mm 194 items
  18. 55mm 59 items
  19. 60mm 136 items
  20. 65mm 71 items
  21. 70mm 113 items
  22. 75mm 58 items
  23. 80mm 108 items
  24. 85mm 5 items
  25. 90mm 80 items
  26. 100mm 92 items
  27. 110mm 42 items
  28. 120mm 55 items
  29. 130mm 38 items
  30. 140mm 33 items
  31. 150mm 38 items
  32. 160mm 22 items
  33. 170mm 13 items
  34. 180mm 25 items
  35. 190mm 11 items
  36. 200mm 26 items
  37. 220mm 17 items
  38. 230mm 7 items
  39. 240mm 13 items
  40. 250mm 11 items
  41. 260mm 10 items
  42. 280mm 4 items
  43. 300mm 13 items
  44. 350mm 2 items
  45. 1/8" 9 items
  46. 5/32" 1 item
  47. 3/16" 27 items
  48. 1/4" 92 items
  49. 5/16" 33 items
  50. 3/8" 123 items
  51. 1/2" 152 items
  52. 5/8" 131 items
  53. 3/4" 188 items
  54. 7/8" 19 items
  55. 1" 189 items
  56. 1-1/8" 1 item
  57. 1-1/4" 138 items
  58. 1-3/8" 1 item
  59. 1-1/2" 154 items
  60. 1-3/4" 25 items
  61. 2" 134 items
  62. 2-1/4" 8 items
  63. 2-1/2" 94 items
  64. 2-3/4" 2 items
  65. 3" 90 items
  66. 3-1/4" 1 item
  67. 3-1/2" 33 items
  68. 4" 39 items
  69. 4-1/2" 18 items
  70. 5" 18 items
  71. 5-1/2" 4 items
  72. 6" 16 items
  73. 6-1/2" 7 items
  74. 7" 9 items
  75. 8" 10 items
  76. 9" 6 items
  77. 10" 6 items
  78. 11" 2 items
  79. 12" 1 item
Material / Finish
  1. Plain Black Uncoated 12 items
  2. Stainless Steel 17 items
  3. Zinc Silver Plated 1 item
Class / Grade
  1. A2-70 G304 13 items
  2. A4-70 G316 4 items
  3. High Tensile Grade 10.9 2 items
  4. High Tensile Grade 12.9 11 items
Corrosion Protection Level
  1. Ultimate 4 items
  2. Excellent 13 items
  3. Moderate 1 item
  4. Low 12 items
Head Type
  1. Button Head 2 items
  2. Cap Head 20 items
  3. Countersunk Head 2 items
  4. Pan Head 3 items
  5. Round Head 3 items
Drive Type
  1. Internal Hex 22 items
  2. Phillips 4 items
  3. Post (Pin) Torx 1 item
  4. Slot 3 items
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