Wednesday, March 11, 2026
RETAINING RINGS
Material:Spring steel

Hardness:


SURFACE FINISHES
Phosphated and oiled
Blackened and oiled
Manufacturer's choice

Example of designation:
ring type JM 20 IMPILATI

d1=bore diameter
d2=grove diameter
d3=ring diameter in the unstressed state
s=thickness
DIN 472
UNI 3654-7437 Type JM - for bores-stacked

d1 Description Price
euro /100
% Price Change
1 2
Package
29.00 JM 29 impilati on demand
- -
-



RING
d1 29.00 
s 1.20 
tole s -0.06 
d3 31.1 
tole d3 +0.50 -0.25 
a max 4.8 
b ~ 3.0 
d5 min 2.0 
weight kg/1000 1.880 
GROOVE
d2 30.4 
tole d2 0.25 
m 1.30 
t 0.70 
SUPPLEMENTARY DATA
n 2.1 
FN (kN) 10.90 
FR (kN) 13.6 
g 1.0 
FRg (kN) 4.6 
AN (mm2) 65.3 
K (kN.mm) 26.8 
plier ZGJ 2 


Technical informations are indicative and can be updated.
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GANDINI FASTENERS SRL viale Pier Paolo Pasolini, 83 - 20099 Sesto S.Giovanni Milano Italy
Tel. +39 02 241 047 250 Fax +39 02 241 047 74

Production and distribution
of fasteners, fixing elements
and mechanical parts machining


 GANDINI FASTENERS SRL
viale Pier Paolo Pasolini, 83
Sesto San Giovanni Mi - Italy		 Sales department
250@gandini.it
tel +39 02 241 047 250		 Administration
350@gandini.it
tel +39 02 241 047 350