When working in engineering, manufacturing, or construction, accurate information on the weight of washers becomes crucial. Whether you're a supplier, buyer, or a quality inspector, having access to a precise washers weight chart in KG and MM helps you streamline logistics, ensure compliance, and reduce cost overruns. In this guide, we present an in-depth breakdown of washer weights, covering metric sizes, material variations, and real-world applications.
What Are Washers? A Quick Overview
Washers are thin, disk-shaped plates with a central hole that distribute the load of threaded fasteners such as bolts or screws. They are widely used to prevent loosening, minimize wear, and distribute pressure. The three most common types include:
- Flat Washers – Standard for load distribution.
- Spring Washers – Used for tensioning and vibration resistance.
- Lock Washers – Prevent rotation or loosening of fasteners.
Why Knowing Washer Weight in KG & MM Matters
- Optimised Shipping Calculations
- Precise Inventory Management
- Cost Forecasting
- Load-Bearing Analysis
- Procurement & Supply Planning
Every kilogram counts in logistics. If you're exporting fasteners, a washer weight chart in KG helps eliminate guesswork and ensures compliance with freight and weight regulations.
Standard Metric Washer Sizes (MM)
NOM SIZE MM | Inner Dia (d) Basic Tol (+) | Outer Dia (d1) Max | WIDTH (b) Basic Tol (+ or -) | THICKNESS (S) Basic Tol (+ or -) | Weight per 1000 in Kgs | |||
3 | 3.1 | 0.3 | 6.2 | 1.3 | 0.1 | 0.8 | 0.1 | 0.11 |
4 | 4.1 | 0.3 | 7.6 | 1.5 | 0.1 | 0.9 | 0.1 | 0.18 |
5 | 5.1 | 0.3 | 9.2 | 1.8 | 0.1 | 1.2 | 0.1 | 0.36 |
6 | 6.1 | 0.4 | 11.8 | 2.5 | 0.15 | 1.6 | 0.1 | 0.83 |
8 | 8.1 | 0.4 | 14.8 | 3 | 0.15 | 2 | 0.1 | 1.60 |
10 | 10.2 | 0.5 | 18.1 | 3.5 | 0.2 | 2.2 | 0.15 | 2.53 |
12 | 12.2 | 0.5 | 21.1 | 4 | 0.2 | 2.5 | 0.15 | 3.82 |
14 | 14.2 | 0.5 | 24.1 | 4.5 | 0.2 | 3 | 0.15 | 6.01 |
16 | 16.2 | 0.8 | 27.4 | 5 | 0.2 | 3.5 | 0.2 | 8.91 |
18 | 18.2 | 0.8 | 29.4 | 5 | 0.2 | 3.5 | 0.2 | 9.73 |
20 | 20.2 | 1 | 33.6 | 6 | 0.2 | 4 | 0.2 | 15.20 |
22 | 22.5 | 1 | 35.9 | 6 | 0.2 | 4 | 0.2 | 16.50 |
24 | 24.5 | 1 | 40 | 7 | 0.25 | 5 | 0.2 | 26.20 |
27 | 27.5 | 1 | 43 | 7 | 0.25 | 5 | 0.2 | 28.70 |
30 | 30.5 | 1.2 | 48.2 | 8 | 0.25 | 6 | 0.2 | 44.30 |
33 | 33.5 | 1.2 | 55.2 | 10 | 0.25 | 6 | 0.2 | 63.00 |
36 | 36.5 | 1.2 | 58.2 | 10 | 0.25 | 6 | 0.2 | 67.30 |
39 | 39.5 | 1.2 | 61.2 | 10 | 0.25 | 6 | 0.2 | 71.70 |
42 | 42.5 | 1.2 | 68.2 | 12 | 0.25 | 7 | 0.25 | 111.00 |
45 | 45.5 | 1.2 | 71.2 | 12 | 0.25 | 7 | 0.25 | 117.00 |
48 | 49 | 1.5 | 75 | 12 | 0.25 | 7 | 0.25 | 123.00 |
52 | 53 | 1.5 | 83 | 14 | 0.25 | 8 | 0.25 | 182.00 |
Washer Weight Chart in KG – By Size
Below is a table featuring the approximate weight of washers based on standard dimensions and material (Mild Steel):
Washer Size (MM) | Qty per KG (Approx.) | Weight per Washer (KG) |
M5 | 1250 | 0.0008 |
M6 | 900 | 0.0011 |
M8 | 625 | 0.0016 |
M10 | 400 | 0.0025 |
M12 | 250 | 0.004 |
M16 | 140 | 0.0071 |
M20 | 80 | 0.0125 |
M24 | 50 | 0.02 |
Note: These are estimated weights. Tolerance levels and material density variations may slightly affect the actual weight.
SPRING WASHERS – SQUARE SECTION CONFORMING TO IS 6735-1972
NOM SIZE | Inner Dia (d) Basic Tol (+) | Outer Dia (d1) Max | WIDTH (b) = THICKNESS(s) Basic Tol (+ or -) | Weight per 1000 IN KGS | ||
3 | 3.1 | 0.3 | 5.6 | 1 | 0.1 | 0.105 |
4 | 4.1 | 0.3 | 7 | 1.2 | 0.1 | 0.195 |
5 | 5.1 | 0.3 | 8.8 | 1.6 | 0.1 | 0.370 |
6 | 6.1 | 0.4 | 9.9 | 1.6 | 0.1 | 0.425 |
8 | 8.1 | 0.4 | 12.7 | 2 | 0.1 | 1.05 |
10 | 10.2 | 0.5 | 16 | 2.5 | 0.15 | 1.96 |
12 | 12.2 | 0.5 | 18 | 2.5 | 0.15 | 2.28 |
14 | 14.2 | 0.5 | 21.1 | 3 | 0.2 | 3.8 |
16 | 16.2 | 0.8 | 24.4 | 3.5 | 0.2 | 5.94 |
18 | 18.2 | 0.8 | 26.4 | 3.5 | 0.2 | 6.6 |
20 | 20.2 | 1 | 30.6 | 4.5 | 0.2 | 12.3 |
22 | 22.5 | 1 | 32.9 | 4.5 | 0.2 | 13.6 |
24 | 24.5 | 1 | 35.9 | 5 | 0.2 | 18.1 |
27 | 27.5 | 1 | 38.9 | 5 | 0.2 | 20.6 |
30 | 30.5 | 1.2 | 44.1 | 6 | 0.2 | 32 |
33 | 33.5 | 1.2 | 47.2 | 6 | 0.2 | 35 |
36 | 36.5 | 1.2 | 52.2 | 7 | 0.25 | 52.5 |
39 | 39.5 | 1.2 | 55.2 | 7 | 0.25 | 56.1 |
42 | 42.5 | 1.2 | 60.2 | 8 | 0.25 | 80 |
45 | 45.5 | 1.2 | 64 | 8 | 0.25 | 85.3 |
48 | 49 | 1.5 | 67 | 8 | 0.25 | 90 |
Pipex.ai – A Powerful B2B Marketplace for the Steel Industry
Pipex.ai is a leading B2B portal designed specifically for the steel industry, connecting buyers and suppliers on a single digital platform. As a robust B2B marketplace, Pipex.ai simplifies procurement, enhances visibility, and streamlines communication for manufacturers, exporters, and distributors of steel products. With its user-friendly interface and AI-driven tools, this B2B online portal enables businesses to discover new opportunities, access real-time inquiries, and grow their network globally, making it an essential solution for steel industry professionals looking to thrive in the digital age.
For updates and additional information, follow on social media platforms.
Social Media: LinkedIn, Instagram, Facebook, Pinterest
Google My Business: https://g.co/kgs/ajPM5Zt.