Circlips by size
34 nominal sizes across 60 parts. 23 of them exist in more than one fit — the same number means a different part depending on whether the groove is on a shaft or in a bore.
1.2 mm
E-clip
1.5 mm
E-clip
1.9 mm
E-clip
2.3 mm
E-clip
3 mm
External circlip
3.2 mm
E-clip
4 mm
External circlip · E-clip
5 mm
External circlip · E-clip
6 mm
External circlip · E-clip
7 mm
External circlip · E-clip
8 mm
External circlip · Internal circlip · E-clip
9 mm
External circlip · Internal circlip · E-clip
10 mm
External circlip · Internal circlip · E-clip
11 mm
External circlip · Internal circlip
12 mm
External circlip · Internal circlip
13 mm
External circlip · Internal circlip
14 mm
External circlip · Internal circlip
15 mm
External circlip · Internal circlip
16 mm
External circlip · Internal circlip
17 mm
External circlip · Internal circlip
18 mm
External circlip · Internal circlip
19 mm
External circlip · Internal circlip
20 mm
External circlip · Internal circlip
21 mm
External circlip · Internal circlip
22 mm
External circlip · Internal circlip
23 mm
External circlip · Internal circlip
24 mm
External circlip · Internal circlip
25 mm
External circlip · Internal circlip
26 mm
External circlip · Internal circlip
27 mm
Internal circlip
28 mm
Internal circlip
29 mm
Internal circlip
30 mm
Internal circlip
31 mm
Internal circlip
Measuring first
The nominal size is the shaft, bore or groove the ring fits — never a dimension of the ring itself. Measuring an old ring across its widest point gives a number that appears nowhere in this list.
How to measure for a circlip