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ARCON RING SITE > Eaton Snap Rings > Internal Retaining Ring (NAN)

Internal Retaining Ring (NAN)

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Internal Retaining Rings

See our Internal Retaining Ring Chart below, which includes technical specifications like:

  • Internal Retaining Ring Dimensions
  • Internal Retaining Ring Groove Dimensions
  • Internal Retaining Ring Thrust Load
  • Plus More

You’ll also notice CAD drawings below to further assist you.

If you do not see your desired specifications in our bearing snap ring size chart below, you can custom-design your own internal retaining ring right on our website!

For more information view all internal eaton rings, or feel free to download our internal retaining ring PDF or view our complete retaining ring catalog.

Contact Arcon Ring to request additional assistance or get a FREE quote online today.

Catalog Stock Sizes Available: 0.375" to 2.688" & 2.717" to 10.000"

Custom Sizes Obtainable: 0.050" to 60"

Standard Material: Carbon Spring Steel

drawing

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    RT NUMBER HOUSING RING GROOVE FREE GAP RING THRUST CAPACITY LBS.
    DIAMETER S FREE DIAMETER WIRE SECTION DIA. WIDTH
    A    		 NOM. DEPTH B MIN. MAX.
    Frac. inch Dec. inch mm D
    inches    		 Tol. inches W
    ±.005    		 T
    ±.002    		 C Tol.
    NAN37 3/8 0.375 9.53 0.400 +0.020 0.035 0.025 0.395 0.028 0.010 0.125 0.218 250
    NAN43 7/16 0.438 11.12 0.467 -0.000 ±.003 0.462 +.003
    -.000    		 300
    NAN50 1/2 0.500 12.70 0.530 0.040 0.524 0.012 470
    NAN51 – 0.512 13.00 0.542 ±.003 0.536 480
    NAN56 9/16 0.562 14.27 0.600 0.035 0.590 0.039 0.014 510
    NAN62 5/8 0.625 15.88 0.670 +0.025 0.048 0.657 +0.003 0.016 0.187 0.344 620
    NAN68 11/16 0.688 17.48 0.733 -0.000 ±.003 0.720 ±.003 -0.000 700
    NAN75 3/4 0.750 19.05 0.799 0.786 0.018 750
    NAN77 – 0.777 19.74 0.827 0.062 0.813 1,020
    NAN81 13/16 0.812 20.62 0.867 ±.003 0.852 0.020 1,090
    NAN87 7/8 0.875 22.23 0.934 0.919 0.046 0.022 1,130
    NAN90 – 0.901 22.88 0.961 0.078 0.042 0.945 +0.003 1,260
    NAN93 15/16 0.938 23.82 1.003 ±.003 0.986 -0.000 0.024 0.281 0.438 1,360
    NAN100 1 1.000 25.40 1.070 1.052 1,470
    NAN102 – 1.023 25.98 1.094 1.075 0.026 1,500
    NAN106 11/16 1.062 26.97 1.134 0.093 1.114 1,780
    NAN112 11/8 1.125 28.58 1.202 +0.031 ±.003 1.181 0.028 1,880
    NAN118 13/16 1.188 30.17 1.270 -0.000 1.248 0.030 1,990
    NAN125 11/4 1.250 31.75 1.337 0.109 1.314 0.056 0.032 2,090
    NAN131 15/16 1.312 33.32 1.404 ±.003 0.050 1.380 +0.003 0.034 0.375 0.562 2,200
    NAN137 13/8 1.375 34.93 1.472 1.447 -0.000 0.036 2,300
    NAN143 17/16 1.438 36.52 1.535 1.510 2,460
    NAN145 – 1.456 36.08 1.557 0.125 1.532 0.038 2,490
    NAN150 11/2 1.500 38.10 1.607 ±.005 1.576 ±.005 2,560
    NAN156 19/16 1.562 39.67 1.668 1.642 0.040 3,060
    NAN162 15/8 1.625 41.28 1.736 0.141 1.709 0.042 3,190
    NAN165 – 1.653 41.99 1.765 ±.005 1.737 3,240
    NAN168 111/16 1.688 42.87 1.804 1.776 0.044 0.437 0.687 3,370
    NAN175 13/4 1.750 44.45 1.870 1.842 0.068 0.046 3,510
    NAN181 113/16 1.812 46.02 1.933 0.062 1.904 +0.004 3,640
    NAN185 – 1.850 47.00 1.975 1.946 -0.000 0.048 3,710
    NAN187 17/8 1.875 47.63 2.000 0.156 1.971 3,760
    NAN193 115/16 1.938 49.22 2.068 ±.005 2.038 3,870
    NAN196 131/32 1.968 49.99 2.098 2.068 0.050 3,935
    NAN200 2 2.000 50.80 2.131 0.046 2.100 4,000
    NAN206 21/16 2.062 52.37 2.197 0.000 2.166 0.052 4,380
    NAN212 21/8 2.125 53.98 2.260 2.229 5,140
    NAN218 23/16 2.188 55.55 2.331 2.296 0.054 0.500 0.750 5,470
    NAN225 21/4 2.250 57.15 2.393 0.171 2.358 0.086 5,630
    NAN231 25/16 2.312 58.72 2.459 ±.005 0.078 2.424 +0.005 0.056 5,790
    NAN237 23/8 2.375 60.33 2.523 2.487 ±.006 -0.000 5,950
    NAN244 – 2.440 61.98 2.592 2.556 0.058 6,270
    NAN250 21/2 2.500 63.50 2.653 2.616 6,350
    NAN253 217/32 2.531 64.28 2.688 0.187 2.651 0.060 6,510
    NAN256 29/16 2.562 65.07 2.726 ±.005 2.686 0.103 8,400
    NAN262 25/8 2.625 66.67 2.790 0.093 2.750 +0.005 0.062 0.562 0.812 8,650
    NAN268 211/16 2.688 68.27 2.856 2.816 -0.000 8,800
    NAN271 – 2.717 68.83 2.882 +.046
    -.000    		 2.842 0.064 0.562 0.812 8,875
    NAN275 23/4 2.750 69.85 2.918 2.878 0.103 8,950
    NAN281 213/16 2.813 71.45 2.985 0.187 0.093 2.945 +0.005 0.066 9,100
    NAN283 – 2.834 72.00 3.006 2.966 -0.000 9,250
    NAN287 27/8 2.875 73.00 3.056 3.011 0.068 9,400
    NAN300 3 3.000 76.20 3.181 +0.062 3.136 0.625 0.875 9,550
    NAN306 33/16 3.062 77.78 3.247 -0.000 3.202 10,470
    NAN312 31/8 3.125 79.38 3.311 3.265 0.070 10,690
    NAN315 35/32 3.156 80.16 3.342 0.218 3.296 10,800
    NAN325 31/4 3.250 82.55 3.442 3.394 11,120
    NAN334 – 3.346 85.00 3.539 3.490 0.072 11,450
    NAN346 315/32 3.469 88.00 3.663 3.613 11,870
    NAN350 31/2 3.500 88.90 3.700 3.648 11,970
    NAN354 – 3.543 90.00 3.745 3.691 ±.006 0.074 0.718 1.062 12,120
    NAN356 39/16 3.562 90.47 3.766 +0.078 3.710 12,190
    NAN362 35/8 3.625 92.08 3.831 -0.000 3.773 0.120 12,380
    NAN375 33/4 3.750 95.25 3.962 0.109 3.902 +0.005 0.076 12,600
    NAN387 37/8 3.875 98.42 4.089 4.027 -0.000 12,820
    NAN393 315/16 3.938 100.00 4.156 0.250 4.094 0.078 13,230
    NAN400 4 4.000 101.60 4.221 4.156 13,690
    NAN412 41/8 4.125 104.77 4.355 4.285 14,110
    NAN425 41/4 4.250 107.95 4.485 4.410 0.080 14,540
    NAN433 – 4.330 110.00 4.565 +0.093 4.490 14,960
    NAN443 47/16 4.436 112.69 4.670 -0.000 4.596 0.875 1.312 15,170
    NAN450 41/2 4.500 114.30 4.744 4.664 0.082 15,390
    NAN462 45/8 4.625 117.48 4.875 4.795 0.085 15,830
    NAN475 43/4 4.750 120.65 5.011 0.281 4.926 0.088 16,250
    NAN500 5 5.000 127.00 5.265 5.180 0.090 17,110
    NAN525 51/4 5.250 133.35 5.530 5.435 0.092 20,590
    NAN537 53/8 5.375 136.53 5.660 5.565 0.139 0.095 21,110
    NAN550 51/2 5.500 140.00 5.796 +0.125 0.312 0.125 5.696 ±.007 +0.006 0.098 1.000 1.500 21,790
    NAN575 53/4 5.750 146.05 6.050 -0.000 5.950 -0.000 0.100 22,570
    NAN600 6 6.000 152.40 6.309 6.204 0.102 23,550
    NAN625 61/4 6.250 158.75 6.568 6.458 0.104 29,420
    NAN650 61/2 6.500 165.00 6.832 6.712 0.174 0.106 30,610
    NAN662 65/8 6.625 168.27 6.975 +0.156 0.343 0.156 6.845 +0.006 1.125 1.812 31,400
    NAN675 63/4 6.750 171.45 7.100 -0.000 6.970 -0.000 0.110 32,640
    NAN700 7 7.000 177.80 7.350 7.220 34,850
    NAN725 71/4 7.250 184.15 7.630 7.500 38,060
    NAN750 71/2 7.500 190.50 7.890 0.375 7.750 0.125 1.375 2.250 39,450
    NAN800 8 8.000 203.20 8.400 8.250 ±.008 41,960
    NAN825 81/4 8.250 209.55 8.665 0.437 8.540 0.145 43,320
    NAN850 81/2 8.500 215.90 8.915 +0.187 8.790 0.209 1.625 2.500 44,710
    NAN875 83/4 8.750 222.25 9.205 -0.000 0.187 9.080 +0.006 48,900
    NAN900 9 9.000 228.60 9.455 9.330 -0.000 49,740
    NAN905 – 9.055 230.00 9.509 0.500 9.384 0.165 50,050
    NAN950 91/2 9.500 241.30 9.955 9.830 1.750 2.625 52,520
    NAN984 927/32 9.840 250.00 10.295 10.170 53,780
    NAN1000 10 10.000 254.00 10.455 10.330 55,400