Internal Retaining ( Snap ) Ring Sizes and Groove Design
Bore Sizes 5.250 - 8.250

ANSI Mechanical Hardware
Retaining Ring Supplier

The following is Internal Retaining Snap Ring Sizes and Groove Design Chart for industrial applications.


Retaining Ring Grove Dimensional Requirements



Internal Retaining ( Snap ) Ring Sive Designations

(All data is in inches.)

Housing Bore Ring Ring Groove
Dia.
Diameter
Thickness
Diameter
Width
Edge
ID
A
Tol.
T
Tol.
OD
Tol.
S
Tol.
E
Tol.

5.250
5.375
5.500
5.750
6.000
6.250
6.500
6.625
6.750
7.000
7.250
7.500
7.750
8.000
8.250

5.770
5.910
6.066
6.336
6.620
6.895
7.170
7.308
7.445
7.720
7.995
8.270
8.545
8.820
9.095

 

 

 

+.090
-.090

.125
.125
.125
.125
.125
.156
.156
.156
.156
.156
.187
.187
.187
.187
.187

+.004
-.004
----

 

+.005
-.005

5.520
5.650
5.770
6.020
6.270
6.530
6.790
6.925
7.055
7.315
7.575
7.840
8.100
8.360
8.620

 

+.007
-.007


----

 

+.008
-.008

 

.139
.139
.139
.139
.139
.174
.174
.174
.174
.174
.209
.209
.209
.209
.209

 

+.006
-.000

 

----

 

+.008
-.000

 

.405
.405
.405
.405
.405
.420
.435
.450
.456
.471
.486
.510
.525
.540
.555

 

 

Not more
Than
± 10%
of E

Reference: Industrial Retaining Snap Rings, 3100 Series..

All dimensions are in inches. Depth of groove d = (OD-ID)/2. Thickness indicated is for unplated rings; for most plated rings, the maximum ring thickness will not exceed the minimum groove width (S) minus 0.0002 inch. Standard material: carbon spring steel (SAE 1060-1090).

Ring Free Diameter Tolerances: For shaft sizes 0.125 through 0.250, +0.002, −0.004; for sizes 0.276 through 0.500, +0.002, −0.005; for sizes 0.551 through 1.023, +0.005, −0.010; for sizes 1.062 through 1.500, +0.010, −0.015; for sizes 1.562 through 2.000, +0.013, −0.020; for sizes 2.062 through 2.500, +0.015, −0.025; for sizes 2.559 through 5.000, +0.020, −0.030; for sizes 5.250 through 6.000, +0.020, −0.040; for sizes 6.250 through 6.750, +0.020, −0.050; for sizes 7.000 and 7.500, +0.050, −0.130.

Ring Thickness Tolerances: For shaft sizes 0.125 and 0.156, ±0.001; for sizes 0.188 through 1.500, ±0.002; for sizes 1.562 through 5.000, ±0.003; for sizes 5.250 through 6.000, ±0.004; for sizes 6.250 through 7.500, ±0.005.

Groove Diameter Tolerances: For shaft sizes 0.125 through 0.250, ±0.0015; for sizes 0.276 through 0.562, ±0.002; for sizes 0.594 through 1.023, ±0.003; for sizes 1.062 though 1.500, ±0.004; for sizes 1.562 through 2.000, ±0.005; for sizes 2.062 through 5.000, ±0.006; for sizes 5.250 through 6.000, ±0.007; for sizes 6.250 through 7.500, ±0.008.

Groove Width Tolerances: For shaft sizes 0.125 through 0.236, +0.002, −0.000; for sizes 0.250 through 1.023, +0.003, −0.000; for sizes 1.062 through 2.000, +0.004, −0.000; for sizes 2.062 through 5.000, +0.005, −0.000; for sizes 5.250 through 6.000, +0.006, −0.000; for sizes 6.250 through 7.500, +0.008, −0.000.

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