This document provides the dimensional, material, and mechanical property requirements for metric conical spring washers in various nominal sizes ranging from 5mm to 30mm. The table specifies the minimum and maximum allowed inner diameter, outer diameter, and height for each size. The washers must be made of spring steel C60 with a minimum hardness of HRC 57 and have a light protective oil finish. Failure to meet these specifications could result in corrective action from the supplier.

1. Page 1 of 1 Fastenal Product Standard REV-03
Date: January 19, 2015 M.BELV.P
Metric, Conical Spring Washers, Plain
The information below lists the required dimensional, chemical and physical characteristics of the products in this purchase order. If
the order received does not meet these requirements, it may result in a supplier corrective action request, which could jeopardize your
status as an approved vendor. Unless otherwise specified, all referenced consensus standards must be adhered to in their entirety.
d1 d2
ID OD
H14 h14 Max. Min. Max. Min.
5 5.3 11 1.235 1.165 1.55 1.35
6 6.4 14 1.535 1.465 2 1.7
7 7.4 17 1.795 1.705 2.3 2
8 8.4 18 2.045 1.955 2.6 2.24
10 10.5 23 2.545 2.455 3.2 2.8
12 13 29 3.05 2.95 3.95 3.43
14 15 35 3.55 3.45 4.65 4.04
16 17 39 4.05 3.95 5.25 4.58
18 19 42 4.56 4.44 5.8 5.08
20 21 45 5.06 4.94 6.4 5.6
22 23 49 5.56 5.44 7.05 6.15
24 25 56 6.06 5.94 7.75 6.77
27 28 60 7.1 5.9 8.35 7.3
30 31 70 7.5 6.5 9.2 8
h
Nominal
Size
HeightThickness
s
Specification Requirements:
• Dimensions: DIN 6796
• Material: Spring Steel C60
• Mechanical Properties: Hardness: HRC 57 minimum
• Finish: Light Protective Oil