Circlips and Retaining Rings

Product Order Line:
01527 521000

Credit Cards Accepted

Circlips and Retaining Rings Index

Standard External Circlips: American Specification N1400

Photo of standard external circlip Diagram of standard external circlips

The most common form of axially fitted circlips for shafts with grooves.

Constructed as curved beams of uniform strength, the radial width is reduced towards the free ends so that a constantly round shape is maintained throughout continuous use. This form of circlip often used in assemblies subjected to strong centrifugal forces, is also secure against high rotational speeds. Lugs with holes are provided for rapid fitting or removal with circlip pliers.

Standard material: Carbon Spring Steel - Standard Finish: Phosphate and Oil.
(Standard circlips are also available in Stainless Steel)

Product Order Line: 01527 521000
Springmasters takes credit card payments

Minimum order charge for UK & Rep. of Ireland customers: Orders are subject to a minimum charge of £15 plus carriage, packing & VAT. Minimum order per item £2.50.

Minimum order charge for Overseas customers: Orders are subject to a minimum order charge of £50 Pound Sterling ($100 US Dollars) on an ex-works basis.

Use your keyboard keys Ctrl + F to find your part number in this page.

* Sizes 12-23 Beryllium Copper only.

Please prefix all code numbers with N1400/
Measurements in inches & lb.f
Key to table headings and abbreviations
Shaft Circlip Dimensions Groove Dimensions Code
No.
N1400/
frac dec t Tol D Tol Cs b L h Fr
lb.f
G Tol W Tol n Fr
lb.f
1/8 .125 .010 +.001
-.001
.112 +.002
-.004
0.22 .018 .048 .024 110 .117 +.0015
-.0015
.012 +.002
-.000
.014 28 *0012
5/32 .156 .010 .142 0.27 .026 .056 .024 130 .146 .012 .017 44 *0015
3/16 .188 .015 +.002
-.002
.168 0.30 .025 .052 .023 240 .175 .018 .022 69 *0018
7/32 .219 .015 .196 0.34 .028 .058 .024 280 .205 .018 .023 87 *0021
15/64 .236 .015 .215 0.36 .030 .058 .024 310 .222 .018 .023 93 *0023
1/4 .250 .025 .225 0.45 .035 .083 .039 880 .230 .029 +.003
-.000
.032 141 0025
9/32 .281 .025 .256 +.002
-.005
0.49 .038 .083 .039 990 .261 +.002
-.002
.029 .035 160 0028
5/16 .312 .025 .281 0.54 .040 .090 .039 1100 .290 .029 .036 194 0031
11/32 .344 .025 .309 0.57 .042 .090 .039 1210 .321 .029 .038 224 0034
3/8 .375 .025 .338 0.61 .050 .091 .039 1320 .352 .029 .038 244 0037
13/32 .406 .025 .366 0.63 .054 .090 .039 4130 .382 .029 .039 275 0040
7/16 .438 .025 .395 0.66 .055 .091 .039 1550 .412 .029 .042 322 0043
15/32 .469 .025 .428 0.68 .060 .091 .039 1660 .443 .029 .042 345 0046
1/2 .500 .035 .461 0.77 .065 .111 .045 2470 .468 .039 .051 452 0050
9/16 .562 .035 .521 +.005
-.010
0.82 .072 .111 .045 2780 .530 .039 .051 508 0056
19/32 .594 .035 .550 0.86 .076 .112 .045 2940 .559 +.003
-.003
.039 .057 588 0059
5/8 .625 .035 .579 0.90 .080 .113 .045 3090 .588 .039 .060 654 0062
43/64 .672 .035 .621 0.93 .082 .113 .045 3320 .631 .039 .066 780 0066
11/16 .688 .042 .635 1.01 .084 .140 .050 4080 .646 .046 .068 817 0068
3/4 .750 .042 .693 1.09 .092 .140 .050 4450 .704 .046 .074 975 0075
25/32 .781 .042 .722 1.12 .094 .140 .050 4600 .733 .046 .076 1060 0078
13/16 .812 .042 .751 1.15 .096 .140 .050 4800 .762 .046 .080 1150 0081
7/8 .875 .042 .810 1.21 .104 .141 .050 5200 .821 .046 .085 1340 0087
15/16 .938 .042 .867 1.34 .110 .170 .076 5600 .882 .046 .088 1480 0093
63/64 .984 .042 .910 1.39 .114 .171 .076 5800 .984 .046 .091 1610 0098
1 1.000 .042 .925 1.41 .116 .171 .076 5900 .940 .046 .094 1700 0100
1 1/16 1.062 .050 .982 +.010
-.015
1.50 .122 .185 .076 7500 .998 +.004
-.004
.056 +.004
-.000
.102 1920 0106
1 1/18 1.125 .050 1.041 1.55 .128 .186 .076 7900 1.059 .056 .105 2100 0112
1 3/16 1.188 .050 1.098 1.61 .132 .186 .076 8400 1.118 .056 .111 2350 0118
1 1/4 1.250 .050 1.156 1.69 .140 .187 .076 8800 1.176 .056 .117 2610 0125
1 5/16 1.312 .050 1.214 1.75 .146 .187 .076 9300 1.232 .056 .126 2970 0131
1 3/8 1.375 .050 1.272 1.80 .152 .188 .076 9700 1.292 .056 .132 3270 0137
1 7/16 1.438 .050 1.333 1.87 .160 .188 .076 10200 1.350 .056 .138 3580 0143
1 1/2 1.500 .050 1.387 1.99 .168 .218 .118 10600 1.406 .056 .147 3990 0150
1 9/16 1.562 .062 +.003
-.003
1.446 +.013
-.020
1.95 .180 .189 .100 10700 1.468 +.005
-.005
.068 .148 4150 0156
1 5/8 1.625 .062 1.503 2.17 .180 .189 .100 11100 1.529 .068 .151 4410 0162
1 11/16 1.688 .062 1.560 2.04 .197 .205 .100 11500 1.589 .068 .156 4720 0168
1 3/4 1.750 .062 1.618 2.11 .197 .205 .100 11900 1.650 .068 .157 4950 0175
1 13/16 1.812 .062 1.675 2.23 .197 .205 .100 12400 1.708 .068 .163 5330 0181
1 7/8 1.875 .062 1.735 2.29 .197 .205 .100 12800 1.769 .068 .166 5620 0187
2 2.000 .062 1.850 2.48 .224 .232 .123 13600 1.886 .068 .178 6450 0200
2 1/8 2.125 .078 1.964 +.015
-.025
2.61 .228 .236 .123 18200 2.003 +.006
-.006
.086 +.005
-.000
.192 7330 0212
2 1/4 2.250 .078 2.081 2.87 .217 .225 .123 19300 2.120 .086 .204 8270 0225
2 3/8 2.375 .078 2.197 2.86 .228 .236 .123 20400 2.239 .086 .213 9130 0237
2 1/2 2.500 .078 2.313 2.98 .228 .236 .123 21400 2.360 .086 .219 9900 0250
2 5/8 2.625 .078 2.428 +.020
-.030
3.11 .228 .236 .123 22500 2.481 .086 .225 10700 0262
2 3/4 2.750 .093 2.543 3.33 .276 .284 .123 28100 2.602 .103 .231 11500 0275
2 7/8 2.875 .093 2.659 3.42 .260 .268 .123 29400 2.721 .103 .240 12500 0287
3 3.000 .093 2.775 3.55 .260 .268 .123 30700 2.838 .103 .252 13700 0300
3 1/8 3.125 .093 2.892 3.75 .272 .305 .123 32000 2.957 .103 .261 14800 0312
3 1/4 3.250 .093 3.006 3.83 .276 .284 .123 33200 3.076 .103 .270 16000 0325
3 1/2 3.500 .109 3.237 4.15 .285 .320 .123 42000 3.316 .120 .285 18200 0350
3 5/8 3.625 .109 3.352 4.28 .315 .323 .123 43400 3.435 .120 .294 19500 0362
3 3/4 3.750 .109 3.468 4.44 .337 .337 .123 44900 3.552 .120 .306 21000 0375
3 7/8 3.875 .109 3.584 4.56 .335 .335 .123 46400 3.673 .120 .312 22100 0387
4 4.000 .109 3.700 4.72 .352 .352 .123 47900 3.792 .120 .321 23500 0400
* Sizes 12-23 Beryllium Copper only.

Please prefix all code numbers with N1400/
Measurements in inches & lb.f
Key to table headings and abbreviations
Shaft Circlip Dimensions Groove Dimensions Code
No.
N1400/
frac dec t Tol D Tol Cs b L h Fr
lb.f
G Tol W Tol n Fr
lb.f
1/8 .125 .010 +.001
-.001
.112 +.002
-.004
0.22 .018 .048 .024 110 .117 +.0015
-.0015
.012 +.002
-.000
.014 28 *0012
5/32 .156 .010 .142 0.27 .026 .056 .024 130 .146 .012 .017 44 *0015
3/16 .188 .015 +.002
-.002
.168 0.30 .025 .052 .023 240 .175 .018 .022 69 *0018
7/32 .219 .015 .196 0.34 .028 .058 .024 280 .205 .018 .023 87 *0021
15/64 .236 .015 .215 0.36 .030 .058 .024 310 .222 .018 .023 93 *0023
1/4 .250 .025 .225 0.45 .035 .083 .039 880 .230 .029 +.003
-.000
.032 141 0025
9/32 .281 .025 .256 +.002
-.005
0.49 .038 .083 .039 990 .261 +.002
-.002
.029 .035 160 0028
5/16 .312 .025 .281 0.54 .040 .090 .039 1100 .290 .029 .036 194 0031
11/32 .344 .025 .309 0.57 .042 .090 .039 1210 .321 .029 .038 224 0034
3/8 .375 .025 .338 0.61 .050 .091 .039 1320 .352 .029 .038 244 0037
13/32 .406 .025 .366 0.63 .054 .090 .039 4130 .382 .029 .039 275 0040
7/16 .438 .025 .395 0.66 .055 .091 .039 1550 .412 .029 .042 322 0043
15/32 .469 .025 .428 0.68 .060 .091 .039 1660 .443 .029 .042 345 0046
1/2 .500 .035 .461 0.77 .065 .111 .045 2470 .468 .039 .051 452 0050
9/16 .562 .035 .521 +.005
-.010
0.82 .072 .111 .045 2780 .530 .039 .051 508 0056
19/32 .594 .035 .550 0.86 .076 .112 .045 2940 .559 +.003
-.003
.039 .057 588 0059
5/8 .625 .035 .579 0.90 .080 .113 .045 3090 .588 .039 .060 654 0062
43/64 .672 .035 .621 0.93 .082 .113 .045 3320 .631 .039 .066 780 0066
11/16 .688 .042 .635 1.01 .084 .140 .050 4080 .646 .046 .068 817 0068
3/4 .750 .042 .693 1.09 .092 .140 .050 4450 .704 .046 .074 975 0075
25/32 .781 .042 .722 1.12 .094 .140 .050 4600 .733 .046 .076 1060 0078
13/16 .812 .042 .751 1.15 .096 .140 .050 4800 .762 .046 .080 1150 0081
7/8 .875 .042 .810 1.21 .104 .141 .050 5200 .821 .046 .085 1340 0087
15/16 .938 .042 .867 1.34 .110 .170 .076 5600 .882 .046 .088 1480 0093
63/64 .984 .042 .910 1.39 .114 .171 .076 5800 .984 .046 .091 1610 0098
1 1.000 .042 .925 1.41 .116 .171 .076 5900 .940 .046 .094 1700 0100
1 1/16 1.062 .050 .982 +.010
-.015
1.50 .122 .185 .076 7500 .998 +.004
-.004
.056 +.004
-.000
.102 1920 0106
1 1/18 1.125 .050 1.041 1.55 .128 .186 .076 7900 1.059 .056 .105 2100 0112
1 3/16 1.188 .050 1.098 1.61 .132 .186 .076 8400 1.118 .056 .111 2350 0118
1 1/4 1.250 .050 1.156 1.69 .140 .187 .076 8800 1.176 .056 .117 2610 0125
1 5/16 1.312 .050 1.214 1.75 .146 .187 .076 9300 1.232 .056 .126 2970 0131
1 3/8 1.375 .050 1.272 1.80 .152 .188 .076 9700 1.292 .056 .132 3270 0137
1 7/16 1.438 .050 1.333 1.87 .160 .188 .076 10200 1.350 .056 .138 3580 0143
1 1/2 1.500 .050 1.387 1.99 .168 .218 .118 10600 1.406 .056 .147 3990 0150
1 9/16 1.562 .062 +.003
-.003
1.446 +.013
-.020
1.95 .180 .189 .100 10700 1.468 +.005
-.005
.068 .148 4150 0156
1 5/8 1.625 .062 1.503 2.17 .180 .189 .100 11100 1.529 .068 .151 4410 0162
1 11/16 1.688 .062 1.560 2.04 .197 .205 .100 11500 1.589 .068 .156 4720 0168
1 3/4 1.750 .062 1.618 2.11 .197 .205 .100 11900 1.650 .068 .157 4950 0175
1 13/16 1.812 .062 1.675 2.23 .197 .205 .100 12400 1.708 .068 .163 5330 0181
1 7/8 1.875 .062 1.735 2.29 .197 .205 .100 12800 1.769 .068 .166 5620 0187
2 2.000 .062 1.850 2.48 .224 .232 .123 13600 1.886 .068 .178 6450 0200
2 1/8 2.125 .078 1.964 +.015
-.025
2.61 .228 .236 .123 18200 2.003 +.006
-.006
.086 +.005
-.000
.192 7330 0212
2 1/4 2.250 .078 2.081 2.87 .217 .225 .123 19300 2.120 .086 .204 8270 0225
2 3/8 2.375 .078 2.197 2.86 .228 .236 .123 20400 2.239 .086 .213 9130 0237
2 1/2 2.500 .078 2.313 2.98 .228 .236 .123 21400 2.360 .086 .219 9900 0250
2 5/8 2.625 .078 2.428 +.020
-.030
3.11 .228 .236 .123 22500 2.481 .086 .225 10700 0262
2 3/4 2.750 .093 2.543 3.33 .276 .284 .123 28100 2.602 .103 .231 11500 0275
2 7/8 2.875 .093 2.659 3.42 .260 .268 .123 29400 2.721 .103 .240 12500 0287
3 3.000 .093 2.775 3.55 .260 .268 .123 30700 2.838 .103 .252 13700 0300
3 1/8 3.125 .093 2.892 3.75 .272 .305 .123 32000 2.957 .103 .261 14800 0312
3 1/4 3.250 .093 3.006 3.83 .276 .284 .123 33200 3.076 .103 .270 16000 0325
3 1/2 3.500 .109 3.237 4.15 .285 .320 .123 42000 3.316 .120 .285 18200 0350
3 5/8 3.625 .109 3.352 4.28 .315 .323 .123 43400 3.435 .120 .294 19500 0362
3 3/4 3.750 .109 3.468 4.44 .337 .337 .123 44900 3.552 .120 .306 21000 0375
3 7/8 3.875 .109 3.584 4.56 .335 .335 .123 46400 3.673 .120 .312 22100 0387
4 4.000 .109 3.700 4.72 .352 .352 .123 47900 3.792 .120 .321 23500 0400

Circlips and Retaining Rings Index | Contact Springmasters with your specifications.