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Belleville Washers

Belleville 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

STACKING ARRANGEMENTS

Belleville washers can be stacked in three ways: parallel (concave sides together) increases load capacity; series (alternating concave and convex) increases deflection; or a combination of both to tune both characteristics together. The product table lists individual washer rating — multiply or add according to your stack arrangement.

MATERIAL

A2-70 G304 Stainless Steel — Corrosion-resistant for outdoor, food and chemical applications.

STANDARD

Manufactured to HEC Standard sizing. The product table lists OD, ID and unloaded height for each size.

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 Belleville washer.

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9 Items found

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Belleville washers (also called disc springs or conical spring washers) are commonly used in high-load bolted joints to add flexibility, allow for thermal expansion, and resist vibration. They can also be stacked to maintain distance between machine parts or to tune the spring rate of a joint. Like all spring washers, they ensure a smooth bearing surface for the nut.

TECHNICAL RESOURCES

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

Key charts and specification sheets: Specs - Belleville Washers Metric Stainless G304 · Metric to Imperial Chart

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

Filter by :
Filter By
Category
System of Measurement
  1. Metric 9 items
Size
  1. M4 (4mm) 1 item
  2. M5 (5mm) 1 item
  3. M6 (6mm) 1 item
  4. M8 (8mm) 1 item
  5. M10 (10mm) 1 item
  6. M12 (12mm) 1 item
  7. M16 (16mm) 1 item
  8. M20 (20mm) 1 item
  9. M24 (24mm) 1 item
To Suit Fastener Size
  1. M4 | 5/32" | 6g | 7g | 8g | #8 | 4BA 1 item
  2. M5 | 3/16" | 10g | #10 | 2BA 1 item
  3. M6 | 1/4" | 12g | 14g | #12 1 item
  4. M8 | 5/16" 1 item
  5. M10 1 item
  6. M12 1 item
  7. M16 | 5/8" 1 item
  8. M20 | 3/4" 1 item
  9. M24 1 item
Material / Finish
  1. Stainless Steel 9 items
Class / Grade
  1. A2-70 G304 9 items
Corrosion Protection Level
  1. Excellent 9 items
Inside Measurement Range Guide
  1. 4.10 - 4.70mm 1 item
  2. 5.00 - 5.75mm 1 item
  3. 6.10 - 7.10mm 1 item
  4. 8.20 - 9.30mm 1 item
  5. 10.20 - 11.70mm 1 item
  6. 12.20 - 14.00mm 1 item
  7. 16.20 - 17.30mm 1 item
  8. 20.10 - 22.50mm 1 item
  9. 24.50 - 27.50mm 1 item
Outside Dia. Range Guide
  1. 3.00 - 9.99mm 2 items
  2. 10.00 - 14.99mm 1 item
  3. 15.00 - 19.99mm 2 items
  4. 25.00 - 29.99mm 1 item
  5. 30.00 - 34.99mm 1 item
  6. 35.00 - 39.99mm 1 item
  7. 40.00 - 49.99mm 1 item
Thickness Range Guide
  1. 0.30 - 0.49mm 2 items
  2. 0.50 - 0.99mm 2 items
  3. 1.00 - 1.49mm 2 items
  4. 1.50 - 1.99mm 1 item
  5. 2.00 - 2.49mm 1 item
  6. 2.50 - 2.99mm 1 item
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