# Inch retaining rings, Rotor Clip SH (external, shaft) and HO (internal, housing): groove diameter, groove width, groove depth and ring thickness > What are the groove diameter and groove width for an inch external or internal retaining ring (Rotor Clip SH, HO; MS16624 style)? - Category: Hardware › Fasteners - Kind: Standard part - Basis: Rotor Clip's own product pages for 16 SH and 14 HO rings, as printed (inch, tolerance ranges). Selected sizes, not the full series; mm in brackets is Xem arithmetic (inch x 25.4) - Page: https://xemstudio.com/objects/retaining-rings-inch-rotor-clip-sh-ho/ · JSON: https://xemstudio.com/api/geometry?object=retaining-rings-inch-rotor-clip-sh-ho · Plain text: https://xemstudio.com/objects/retaining-rings-inch-rotor-clip-sh-ho/sheet.txt - License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license - Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/) **Exact dimensions.** True size, with no tolerance added. ## Notes - Rotor Clip's SH is the axially assembled external (shaft) ring and HO the internal (housing) ring in its inch series; the number after the dash is the shaft or housing diameter in hundredths of an inch for most sizes (SH-75 = 0.750 in, HO-193 = 1.938 in) but not all: SH-31 is 0.312 in, HO-68 is 0.688 in, SH-354 3.543 in (90 mm) and HO-206 2.047 in (52 mm). The diameter shown is the one on Rotor Clip's page. - Groove diameter and width are the ranges Rotor Clip prints (low – high). Groove depth is the page's value (within 0.001 in of half the difference between the shaft or housing diameter and the middle of the groove range for all 30 rings listed, for example SH-75 (0.750 − 0.704) / 2 = 0.023). Ring thickness is the range printed for the ring (add 0.002 in to the maximum for plated rings, per the pages). - Rotor Clip's catalog states these are its standard commercial production dimensions and that military, ASME, NAS and ANSI rings (for example MS16624) may differ: MS16624-2066, read on a distributor spec, prints a groove diameter of 0.629 ±0.003 and groove width 0.039 +0.003 / −0.000, which is its own size and is not a Rotor Clip SH ring; do not mix the two. - Not here: free diameter, lug height, section, hole size, clearance diameters, thrust and speed limits are on Rotor Clip's pages and are left out on purpose; the ring profile is not published as numbers in a form that gives a true-size model, so there are no files. The metric/DIN equivalents are on retaining-rings-din-471-external and retaining-rings-din-472-internal. - A distributor's generic 'retaining ring groove chart' (Albany County Fasteners) lists other groove widths (for example 0.062 in for a 1 in shaft against Rotor Clip's 0.046 – 0.049) and is not used. Sizes between the rows are in Rotor Clip's catalog, linked below as product pages. ## Sizes | type | ring | shaft | housing diameter (in) | groove diameter (in) | groove width W (in) | groove depth (in) | ring thickness T (in) | |---|---|---|---|---|---|---| | external, shaft (SH) | SH-31 | 0.312 (7.92 mm) | 0.288 – 0.292 (7.32 – 7.42 mm) | 0.029 – 0.032 | 0.011 | 0.023 – 0.027 | | external, shaft (SH) | SH-50 | 0.500 (12.70 mm) | 0.466 – 0.470 (11.84 – 11.94 mm) | 0.039 – 0.042 | 0.016 | 0.033 – 0.037 | | external, shaft (SH) | SH-75 | 0.750 (19.05 mm) | 0.701 – 0.707 (17.81 – 17.96 mm) | 0.046 – 0.049 | 0.023 | 0.040 – 0.044 | | external, shaft (SH) | SH-100 | 1.000 (25.40 mm) | 0.937 – 0.943 (23.80 – 23.95 mm) | 0.046 – 0.049 | 0.030 | 0.040 – 0.044 | | external, shaft (SH) | SH-125 | 1.250 (31.75 mm) | 1.172 – 1.180 (29.77 – 29.97 mm) | 0.056 – 0.060 | 0.037 | 0.048 – 0.052 | | external, shaft (SH) | SH-181 | 1.812 (46.02 mm) | 1.703 – 1.713 (43.26 – 43.51 mm) | 0.068 – 0.072 | 0.052 | 0.059 – 0.065 | | external, shaft (SH) | SH-187 | 1.875 (47.62 mm) | 1.764 – 1.774 (44.81 – 45.06 mm) | 0.068 – 0.072 | 0.053 | 0.059 – 0.065 | | external, shaft (SH) | SH-200 | 2.000 (50.80 mm) | 1.881 – 1.891 (47.78 – 48.03 mm) | 0.068 – 0.072 | 0.057 | 0.059 – 0.065 | | external, shaft (SH) | SH-237 | 2.375 (60.32 mm) | 2.233 – 2.245 (56.72 – 57.02 mm) | 0.086 – 0.091 | 0.068 | 0.075 – 0.081 | | external, shaft (SH) | SH-300 | 3.000 (76.20 mm) | 2.832 – 2.844 (71.93 – 72.24 mm) | 0.103 – 0.108 | 0.081 | 0.090 – 0.096 | | external, shaft (SH) | SH-354 | 3.543 (89.99 mm) | 3.351 – 3.363 (85.12 – 85.42 mm) | 0.120 – 0.125 | 0.093 | 0.106 – 0.112 | | external, shaft (SH) | SH-393 | 3.938 (100.03 mm) | 3.728 – 3.740 (94.69 – 95.00 mm) | 0.120 – 0.125 | 0.102 | 0.106 – 0.112 | | external, shaft (SH) | SH-450 | 4.500 (114.30 mm) | 4.304 – 4.316 (109.32 – 109.63 mm) | 0.120 – 0.125 | 0.095 | 0.106 – 0.112 | | external, shaft (SH) | SH-500 | 5.000 (127.00 mm) | 4.784 – 4.796 (121.51 – 121.82 mm) | 0.120 – 0.125 | 0.105 | 0.106 – 0.112 | | external, shaft (SH) | SH-575 | 5.750 (146.05 mm) | 5.498 – 5.512 (139.65 – 140.00 mm) | 0.139 – 0.145 | 0.122 | 0.121 – 0.129 | | external, shaft (SH) | SH-650 | 6.500 (165.10 mm) | 6.217 – 6.233 (157.91 – 158.32 mm) | 0.174 – 0.182 | 0.137 | 0.151 – 0.161 | | internal, housing (HO) | HO-68 | 0.688 (17.48 mm) | 0.730 – 0.734 (18.54 – 18.64 mm) | 0.039 – 0.042 | 0.022 | 0.033 – 0.037 | | internal, housing (HO) | HO-75 | 0.750 (19.05 mm) | 0.794 – 0.798 (20.17 – 20.27 mm) | 0.039 – 0.042 | 0.023 | 0.033 – 0.037 | | internal, housing (HO) | HO-93 | 0.938 (23.83 mm) | 0.997 – 1.003 (25.32 – 25.48 mm) | 0.046 – 0.049 | 0.031 | 0.040 – 0.044 | | internal, housing (HO) | HO-106 | 1.062 (26.97 mm) | 1.126 – 1.134 (28.60 – 28.80 mm) | 0.056 – 0.060 | 0.034 | 0.048 – 0.052 | | internal, housing (HO) | HO-125 | 1.250 (31.75 mm) | 1.326 – 1.334 (33.68 – 33.88 mm) | 0.056 – 0.060 | 0.040 | 0.048 – 0.052 | | internal, housing (HO) | HO-156 | 1.562 (39.67 mm) | 1.653 – 1.663 (41.99 – 42.24 mm) | 0.068 – 0.072 | 0.048 | 0.059 – 0.065 | | internal, housing (HO) | HO-193 | 1.938 (49.23 mm) | 2.051 – 2.061 (52.10 – 52.35 mm) | 0.068 – 0.072 | 0.059 | 0.059 – 0.065 | | internal, housing (HO) | HO-206 | 2.047 (51.99 mm) | 2.165 – 2.177 (54.99 – 55.30 mm) | 0.086 – 0.091 | 0.062 | 0.075 – 0.081 | | internal, housing (HO) | HO-250 | 2.500 (63.50 mm) | 2.642 – 2.654 (67.11 – 67.41 mm) | 0.086 – 0.091 | 0.074 | 0.075 – 0.081 | | internal, housing (HO) | HO-354 | 3.562 (90.47 mm) | 3.770 – 3.782 (95.76 – 96.06 mm) | 0.120 – 0.125 | 0.107 | 0.106 – 0.112 | | internal, housing (HO) | HO-412 | 4.125 (104.77 mm) | 4.359 – 4.371 (110.72 – 111.02 mm) | 0.120 – 0.125 | 0.120 | 0.106 – 0.112 | | internal, housing (HO) | HO-550 | 5.500 (139.70 mm) | 5.763 – 5.777 (146.38 – 146.74 mm) | 0.139 – 0.145 | 0.135 | 0.121 – 0.129 | | internal, housing (HO) | HO-662 | 6.625 (168.27 mm) | 6.917 – 6.933 (175.69 – 176.10 mm) | 0.174 – 0.182 | 0.150 | 0.151 – 0.161 | | internal, housing (HO) | HO-725 | 7.250 (184.15 mm) | 7.567 – 7.583 (192.20 – 192.61 mm) | 0.209 – 0.217 | 0.162 | 0.182 – 0.192 | ## Where the files are - Rotor Clip: [SH-31 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=16733) — web — Maker product page; numbers only - Rotor Clip: [SH-50 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/product/sh-50) — web — Maker product page; numbers only - Rotor Clip: [SH-75 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/product/sh-75/) — web — Maker product page; numbers only - Rotor Clip: [SH-100 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/product/sh-100) — web — Maker product page; numbers only - Rotor Clip: [SH-125 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/product/sh-125/) — web — Maker product page; numbers only - Rotor Clip: [SH-181 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=16707) — web — Maker product page; numbers only - Rotor Clip: [SH-187 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=16708) — web — Maker product page; numbers only - Rotor Clip: [SH-200 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/product/sh-200/) — web — Maker product page; numbers only - Rotor Clip: [SH-237 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=16719) — web — Maker product page; numbers only - Rotor Clip: [SH-300 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=16731) — web — Maker product page; numbers only - Rotor Clip: [SH-354 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=16742) — web — Maker product page; numbers only - Rotor Clip: [SH-393 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=16749) — web — Maker product page; numbers only - Rotor Clip: [SH-450 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=16756) — web — Maker product page; numbers only - Rotor Clip: [SH-500 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=16761) — web — Maker product page; numbers only - Rotor Clip: [SH-575 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=16766) — web — Maker product page; numbers only - Rotor Clip: [SH-650 product page (external): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=16771) — web — Maker product page; numbers only - Rotor Clip: [HO-68 product page (internal): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=12485) — web — Maker product page; numbers only - Rotor Clip: [HO-75 product page (internal): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/product/HO-75/) — web — Maker product page; numbers only - Rotor Clip: [HO-93 product page (internal): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=12502) — web — Maker product page; numbers only - Rotor Clip: [HO-106 product page (internal): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=12399) — web — Maker product page; numbers only - Rotor Clip: [HO-125 product page (internal): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=12403) — web — Maker product page; numbers only - Rotor Clip: [HO-156 product page (internal): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=12411) — web — Maker product page; numbers only - Rotor Clip: [HO-193 product page (internal): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=12420) — web — Maker product page; numbers only - Rotor Clip: [HO-206 product page (internal): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=12423) — web — Maker product page; numbers only - Rotor Clip: [HO-250 product page (internal): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=12432) — web — Maker product page; numbers only - Rotor Clip: [HO-354 product page (internal): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=12453) — web — Maker product page; numbers only - Rotor Clip: [HO-412 product page (internal): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=12462) — web — Maker product page; numbers only - Rotor Clip: [HO-550 product page (internal): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=12476) — web — Maker product page; numbers only - Rotor Clip: [HO-662 product page (internal): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=12483) — web — Maker product page; numbers only - Rotor Clip: [HO-725 product page (internal): diameter, groove dia, groove width, groove depth, free dia, thickness](https://www.rotorclip.com/?p=12487) — web — Maker product page; numbers only ## Questions **What is the groove for a Rotor Clip SH-100 ring on a 1 in shaft?** Groove diameter 0.937 – 0.943 in, groove width 0.046 – 0.049 in, groove depth 0.030 in; ring thickness 0.040 – 0.044 in (Rotor Clip product page). **What is the groove for a 3/4 in bore with an HO-75 ring?** Groove diameter 0.794 – 0.798 in, groove width 0.039 – 0.042 in, groove depth 0.023 in; ring thickness 0.033 – 0.037 in (Rotor Clip product page). **Is an inch retaining ring the same as a DIN 471 circlip?** No. DIN 471 / 472 are metric; Rotor Clip's SH and HO are inch series with their own groove sizes. ## Fits with - [Retaining rings DIN 471 (external, for shafts): ring dimensions and groove diameter d2 × width m, 3 to 100 mm](https://xemstudio.com/objects/retaining-rings-din-471-external/) - [Retaining rings DIN 472 (internal, for bores): ring dimensions and groove diameter d2 × width m, 8 to 110 mm](https://xemstudio.com/objects/retaining-rings-din-472-internal/) - [E-clips DIN 6799 for Ø2 to Ø10 shafts](https://xemstudio.com/objects/e-clips-din-6799/) - [R-clips, spring cotters and hairpin cotter pins: wire diameter, pin / shaft range, length (DIN 11024, McMaster hairpin sizes)](https://xemstudio.com/objects/r-clips-hairpin-cotters-din-11024/) - [Clevis pins with head, ISO 2341 (DIN 1444) forms A and B, d 3–100: head diameter and height, split-pin hole, le, radius + example pin models](https://xemstudio.com/objects/clevis-pins-iso-2341/) - [Split pins (cotter pins) ISO 1234 / DIN 94, 0.6–20: hole size, wire diameter d, a, b, c and the bolt and clevis-pin size each one serves](https://xemstudio.com/objects/split-pins-iso-1234/)