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Countersunk Head Socket

Countersunk Head Socket

Bolt and Nut Australia carry the largest range of Countersunk head socket screws. Countersunk head (also known as flat head) socket screws are a flat head with a tapered underside, have a hex allen drive and come either fully threaded or part thread. To determine the length measure the overall length including the head. Countersunk head socket screws are made from high tensile steel and are very popular because of their excellent tensile strength, hex allen key drive and flat head shape. We have Stainless Steel A2-70 G304, Marine Grade Stainless Steel A4-70 G316 , Zinc Plated and Plain Black in Metric coarse, 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.

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Category
System of Measurement
  1. Metric 36 items
  2. Imperial 36 items
Size
  1. M2 (2mm) 2 items
  2. M2.5 (2.5mm) 3 items
  3. M3 (3mm) 4 items
  4. M4 (4mm) 4 items
  5. M5 (5mm) 4 items
  6. M6 (6mm) 4 items
  7. M8 (8mm) 4 items
  8. M10 (10mm) 4 items
  9. M12 (12mm) 4 items
  10. M14 (14mm) 1 item
  11. M16 (16mm) 2 items
  12. #2-56 2 items
  13. #3-48 1 item
  14. #4-40 2 items
  15. #4-48 1 item
  16. #5-40 2 items
  17. #6-32 2 items
  18. #6-40 1 item
  19. #8-32 2 items
  20. #8-36 1 item
  21. #10-24 (3/16") 2 items
  22. #10-32 (3/16") 2 items
  23. 1/4" 4 items
  24. 5/16" 4 items
  25. 3/8" 4 items
  26. 7/16" 2 items
  27. 1/2" 4 items
Size & Thread Pitch
  1. M2 x 0.40p Coarse 2 items
  2. M2.5 x 0.45p Coarse 3 items
  3. M3 x 0.50p Coarse 4 items
  4. M4 x 0.70p Coarse 4 items
  5. M5 x 0.80p Coarse 4 items
  6. M6 x 1.00p Coarse 4 items
  7. M8 x 1.25p Coarse 4 items
  8. M10 x 1.50p Coarse 4 items
  9. M12 x 1.75p Coarse 4 items
  10. M14 x 2.00p Coarse 1 item
  11. M16 x 2.00p Coarse 2 items
  12. #2-56 TPI UNC 2 items
  13. #3-48 TPI UNC 1 item
  14. #4-40 TPI UNC 2 items
  15. #4-48 TPI UNF 1 item
  16. #5-40 TPI UNC 2 items
  17. #6-32 TPI UNC 2 items
  18. #6-40 TPI UNF 1 item
  19. #8-32 TPI UNC 2 items
  20. #8-36 TPI UNF 1 item
  21. #10-24 (3/16") x 24 TPI UNC 2 items
  22. #10-32 (3/16") x 32 TPI UNF 2 items
  23. 1/4" x 20 TPI UNC 2 items
  24. 1/4" x 28 TPI UNF 2 items
  25. 5/16" x 18 TPI UNC 2 items
  26. 5/16" x 24 TPI UNF 2 items
  27. 3/8" x 16 TPI UNC 2 items
  28. 3/8" x 24 TPI UNF 2 items
  29. 7/16" x 14 TPI UNC 1 item
  30. 7/16" x 20 TPI UNF 1 item
  31. 1/2" x 13 TPI UNC 2 items
  32. 1/2" x 20 TPI UNF 2 items
Thread Type
  1. Metric - Coarse 36 items
  2. UNC / BSW - Coarse 22 items
  3. UNF - Fine 14 items
Length
  1. 4mm 4 items
  2. 5mm 8 items
  3. 6mm 16 items
  4. 8mm 21 items
  5. 10mm 23 items
  6. 12mm 27 items
  7. 16mm 29 items
  8. 20mm 33 items
  9. 25mm 32 items
  10. 30mm 32 items
  11. 35mm 28 items
  12. 40mm 31 items
  13. 45mm 27 items
  14. 50mm 29 items
  15. 55mm 12 items
  16. 60mm 25 items
  17. 65mm 7 items
  18. 70mm 22 items
  19. 75mm 8 items
  20. 80mm 21 items
  21. 90mm 19 items
  22. 100mm 19 items
  23. 110mm 7 items
  24. 120mm 13 items
  25. 130mm 3 items
  26. 150mm 3 items
  27. 3/16" 5 items
  28. 1/4" 17 items
  29. 5/16" 8 items
  30. 3/8" 20 items
  31. 1/2" 21 items
  32. 5/8" 22 items
  33. 3/4" 34 items
  34. 7/8" 4 items
  35. 1" 30 items
  36. 1-1/4" 24 items
  37. 1-1/2" 24 items
  38. 1-3/4" 1 item
  39. 2" 22 items
  40. 2-1/2" 13 items
  41. 3" 12 items
  42. 3-1/2" 4 items
  43. 4" 4 items
Material / Finish
  1. Plain Black Uncoated 29 items
  2. Stainless Steel 36 items
  3. Zinc Silver Plated 7 items
Class / Grade
  1. A2-70 G304 25 items
  2. A4-70 G316 11 items
  3. High Tensile Grade 10.9 21 items
  4. High Tensile Class 12.9 15 items
Corrosion Protection Level
  1. Ultimate 11 items
  2. Excellent 25 items
  3. Moderate 7 items
  4. Poor 29 items
Head Dia. Range
  1. 3.80 - 4.10mm 2 items
  2. 4.40 - 5.00mm 5 items
  3. 5.00 - 5.60mm 1 item
  4. 5.30 - 7.00mm 1 item
  5. 5.60 - 7.15mm 8 items
  6. 6.68 - 7.80mm 3 items
  7. 7.00 - 8.50mm 1 item
  8. 7.15 - 9.12mm 6 items
  9. 8.80 - 10.00mm 1 item
  10. 9.20 - 10.45mm 7 items
  11. 10.40 - 12.00mm 1 item
  12. 11.34 - 12.00mm 3 items
  13. 12.10 - 13.49mm 4 items
  14. 15.20 - 16.70mm 8 items
  15. 18.20 - 21.45mm 10 items
  16. 22.15 - 24.00mm 9 items
  17. 29.50 - 30.00mm 2 items
Drive Type
  1. Internal Hex 72 items
Drive Size
  1. 1.27mm 1 item
  2. 1.3mm 1 item
  3. 1.5mm 3 items
  4. 2mm 4 items
  5. 2.5mm 4 items
  6. 3mm 4 items
  7. 4mm 4 items
  8. 5mm 4 items
  9. 6mm 4 items
  10. 8mm 4 items
  11. 10mm 3 items
  12. 0.050" 2 items
  13. 1/16" 4 items
  14. 5/64" 5 items
  15. 3/32" 3 items
  16. 1/8" 4 items
  17. 5/32" 4 items
  18. 3/16" 4 items
  19. 7/32" 4 items
  20. 1/4" 2 items
  21. 5/16" 4 items
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