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Nylon Flat Round Washers

Nylon Flat Round Washers
How to measure washers
Two ways to confirm before you order - whichever you already know.
1If you know your bolt size

Washers are named by the bolt they fit: an M10 washer suits an M10 bolt. The inside diameter is slightly larger than the bolt so it slides on. Our guide covers every size and washer type we stock.

Open the washer measuring guide ›

Open the washer gauge sizing chart ›

2If you have a washer in hand

Measure the inside diameter (ID), outside diameter (OD) and thickness, as shown in the drawing.

Washer measurement diagram - inside diameter, outside diameter and thickness

MATERIAL

Nylon 6/6 (Natural White) — The standard option. High strength, good chemical and temperature resistance, electrical insulator.

Nylon 6/6 (Black) — UV-stabilised for outdoor exposure. Same mechanical properties as natural with better sun resistance.

KEY FEATURES

Excellent electrical insulator. Highly resistant to common chemicals and solvents. Temperature stable across normal service ranges. Non-magnetic. Light weight. Won't mark painted or polished surfaces. Resistant to weathering (especially the black UV-stabilised grade).

TYPICAL USES

Insulation between dissimilar metals to prevent galvanic corrosion. Electrical assemblies where a metal washer would short-circuit the joint. Soft-contact protection for painted automotive and architectural panels. Light vibration damping in plastic-housed assemblies.

WHY AUSTRALIA TRUSTS BOLT & NUT

With 15+ years selling fasteners online from Brisbane, we hold over 25,000 stock lines and 200 million pieces — 98.75% of online orders placed before 1pm leave same day. Save more as you buy more — we offer up to 13 price breaks plus 3 spend-tier discounts. Read our customer reviews or get in touch if you need help picking the right nylon washer.

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Nylon flat round washers replace a steel washer with an insulating, non-marking plastic alternative. They're used for electrical isolation, galvanic corrosion prevention between dissimilar metals, soft contact on painted or polished surfaces, and where light vibration damping is helpful.

TECHNICAL RESOURCES

Need help identifying your washer? See our washer measuring guide, or check the washer gauge sizing chart.

For full sizing data and standards, see our Technical PDFs library.

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    Flat Round Washers
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Category
System of Measurement
  1. Metric 274 items
  2. Imperial 188 items
Size
  1. M1.6 (1.6mm) 3 items
  2. M2 (2mm) 6 items
  3. M2.5 (2.5mm) 7 items
  4. M3 (3mm) 12 items
  5. M3.5 (3.5mm) 5 items
  6. M4 (4mm) 14 items
  7. M5 (5mm) 19 items
  8. M6 (6mm) 25 items
  9. M7 (7mm) 1 item
  10. M8 (8mm) 23 items
  11. M10 (10mm) 26 items
  12. M12 (12mm) 23 items
  13. M14 (14mm) 9 items
  14. M16 (16mm) 22 items
  15. M18 (18mm) 7 items
  16. M20 (20mm) 21 items
  17. M22 (22mm) 4 items
  18. M24 (24mm) 15 items
  19. M27 (27mm) 5 items
  20. M30 (30mm) 8 items
  21. M33 (33mm) 4 items
  22. M36 (36mm) 6 items
  23. M39 (39mm) 2 items
  24. M42 (42mm) 2 items
  25. M45 (45mm) 1 item
  26. M48 (48mm) 1 item
  27. M52 (52mm) 1 item
  28. M56 (56mm) 1 item
  29. M64 (64mm) 1 item
  30. 3/32" 1 item
  31. 1/8" 9 items
  32. 5/32" 8 items
  33. 8g (4.20mm) 1 item
  34. 10g (4.80mm) 1 item
  35. 3/16" (#10-24) 24 items
  36. 1/4" 29 items
  37. 5/16" 18 items
  38. 3/8" 26 items
  39. 7/16" 4 items
  40. 1/2" 14 items
  41. 9/16" 4 items
  42. 5/8" 9 items
  43. 3/4" 7 items
  44. 7/8" 6 items
  45. 1" 10 items
  46. 1-1/8" 3 items
  47. 1-1/4" 3 items
  48. 1-3/8" 1 item
  49. 1-1/2" 3 items
  50. 1-3/4" 1 item
  51. 2" 3 items
  52. 2-1/4" 1 item
  53. 2-1/2" 1 item
  54. 3" 1 item
To Suit Fastener Size
  1. M1.6 | 1-72 3 items
  2. M2 | #2 | 9BA 6 items
  3. M2.5 | #3 | 7BA 8 items
  4. M3 | 1/8" | #5 | 6BA 21 items
  5. M3.5 | #6 5 items
  6. M4 | 5/32" | 6g | 7g | 8g | #8 | 4BA 23 items
  7. M5 | 3/16" | 10g | #10 | 2BA 44 items
  8. M6 | 1/4" | 12g | 14g | #12 54 items
  9. M7 1 item
  10. M8 | 5/16" 41 items
  11. M10 26 items
  12. M10 | 3/8" 26 items
  13. 7/16" 4 items
  14. M12 | 1/2" 23 items
  15. 1/2" | 2BA 14 items
  16. M14 | 9/16" 13 items
  17. M16 | 5/8" 31 items
  18. M18 7 items
  19. M20 | 3/4" 28 items
  20. M22 | 7/8" 10 items
  21. M24 25 items
  22. M27 | 1-1/8" 8 items
  23. M30 8 items
  24. M33 | 1-1/4" 7 items
  25. M36 | 1-1/2" 10 items
  26. M39 | 1-5/8" 2 items
  27. M42 2 items
  28. M45 | 1-3/4" 2 items
  29. M48 1 item
  30. M52 | 2" 4 items
  31. M56 | 2-1/4" 2 items
  32. M64 | 2-1/2" 2 items
  33. 3" 1 item
Material / Finish
  1. Black Zinc Plated 5 items
  2. Brass 23 items
  3. Galvanised 28 items
  4. Nylon 76 items
  5. Plain Black Uncoated 8 items
  6. Stainless Steel 214 items
  7. Zinc Silver Plated 89 items
  8. Zinc Yellow Plated 19 items
Class / Grade
  1. A2-70 G304 99 items
  2. A4-70 G316 95 items
  3. High Tensile A4-80 G316 20 items
  4. Low Tensile Grade 2 65 items
  5. Low Tensile Class 4.6 76 items
  6. High Tensile Grade 8 19 items
  7. High Tensile Class 8.8 12 items
Corrosion Protection Level
  1. Ultimate 152 items
  2. Excellent 189 items
  3. Moderate 113 items
  4. Low 8 items
Inside Measurement Range Guide
  1. 1.65 - 1.90mm 3 items
  2. 2.10 - 2.40mm 6 items
  3. 2.60 - 2.90mm 7 items
  4. 2.90 - 3.05mm 1 item
  5. 3.10 - 3.60mm 12 items
  6. 3.60 - 4.00mm 14 items
  7. 4.10 - 4.70mm 23 items
  8. 5.00 - 5.75mm 44 items
  9. 6.10 - 7.10mm 25 items
  10. 6.50 - 7.50mm 29 items
  11. 7.30 - 7.80mm 1 item
  12. 8.20 - 9.30mm 41 items
  13. 9.60 - 10.40mm 2 items
  14. 10.20 - 11.70mm 50 items
  15. 11.30 - 12.60mm 4 items
  16. 12.20 - 14.00mm 37 items
  17. 14.20 - 15.60mm 10 items
  18. 15.60 - 16.60mm 3 items
  19. 16.80 - 18.60mm 31 items
  20. 18.20 - 19.60mm 6 items
  21. 19.20 - 21.10mm 2 items
  22. 20.10 - 22.50mm 27 items
  23. 22.30 - 24.50mm 10 items
  24. 24.50 - 27.50mm 24 items
  25. 27.50 - 29.50mm 5 items
  26. 29.10 - 31.80mm 2 items
  27. 31.00 - 33.00mm 7 items
  28. 33.00 - 36.00mm 10 items
  29. 36.50 - 39.00mm 5 items
  30. 39.00 - 43.00mm 7 items
  31. 44.00 - 46.00mm 2 items
  32. 47.00 - 50.00mm 2 items
  33. 51.00 - 53.00mm 1 item
  34. 53.70 - 56.00mm 4 items
  35. 61.00 - 63.00mm 2 items
  36. 67.00 - 69.50mm 1 item
  37. 69.50 - 72.00mm 1 item
  38. 79.00 - 81.00mm 1 item
Outside Dia. Range Guide
  1. 3.00 - 9.99mm 72 items
  2. 10.00 - 14.99mm 48 items
  3. 15.00 - 19.99mm 75 items
  4. 25.00 - 29.99mm 90 items
  5. 30.00 - 34.99mm 36 items
  6. 35.00 - 39.99mm 35 items
  7. 40.00 - 49.99mm 24 items
  8. 50.00 - 59.99mm 37 items
  9. 60.00 - 69.99mm 21 items
  10. 70.00 - 79.99mm 10 items
  11. 80.00 - 89.99mm 3 items
  12. 90.00 - 99.99mm 3 items
  13. 100.00 - 140.00mm 8 items
Thickness Range Guide
  1. 0.30 - 0.49mm 10 items
  2. 0.50 - 0.99mm 81 items
  3. 1.00 - 1.49mm 83 items
  4. 1.50 - 1.99mm 130 items
  5. 2.00 - 2.49mm 29 items
  6. 2.50 - 2.99mm 57 items
  7. 3.00 - 3.49mm 20 items
  8. 3.50 - 3.99mm 29 items
  9. 4.50 - 4.99mm 6 items
  10. 5.00 - 5.99mm 10 items
  11. 6.00 - 6.99mm 5 items
  12. 7.00 - 7.99mm 2 items
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