Spring pins: slotted (ISO 8752, ASME B18.8.2) and coiled (ISO 8750): diameter, wall, chamfer, hole size, shear + hole gauges — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/spring-pins-iso-8752-8750-asme-b18-8-2/ (sheet CC BY 4.0) Basis: Westfield Fasteners' ISO 8752 and ISO 8750 tables (checked against iTeh's ISO sample pages), SPIROL's inch ASME B18.8.2 slotted-pin sheet, SPIROL's 5 mm metric listing, and McMaster-Carr's spring-pin tables as cross-checks; two hole gauges as files Catalog version: 2026-10-20 Overall (mm): length 98.3, width 20.7, height 3.0 - ISO 8752 (slotted, replaces DIN 1481, 1 to 50 mm) and ISO 8750 (coiled, standard duty, 0.8 to 20 mm) are tabulated in mm. Columns: pin diameter before mounting max / min (the nominal d1 is the hole), d2 (reference only, as printed), a (chamfer length, max / min for ISO 8752), s (wall, from the table), and minimum double-shear force in kN for steel and martensitic stainless. For ISO 8750 the standard's austenitic stainless shear values are also shown. iTeh's ISO sample pages agree with Westfield on d1, d2, s and shear (and on a for ISO 8752) for the sizes read (ISO 8752: 3, 4, 5, 6, 8, 10, 12; ISO 8750: 2, 3, 4, 5, 6, 8, 10, 12, 16, 20). Westfield's 8752 table prints 22.5 kN for d1 = 18, out of line with its neighbours, so that value is left out. The reading of 'a' as a chamfer length follows ISO 8750's figure note (swaged chamfer, 'a ≈') and, for ISO 8752, matches SPIROL's printed 0.90–1.10 mm chamfer for the 5 mm pin (a 1.1 / 0.9); it was checked at that one size only. - Hole: both ISO standards say the hole should equal the nominal pin diameter d1 with tolerance class H12 (ISO 286-2; H10 for ISO 8750 pins of 1.2 mm and below); in the smallest permitted hole the slot should not close completely. SPIROL's 5 mm listing prints 5.00–5.12 mm. McMaster-Carr's tables print wider ranges for the ISO 8752 pins it sells (for example 5 to 5.2 mm, 8 to 8.25 mm, 10 to 10.3 mm) and, for coiled pins, 5.000–5.100 mm; use the range of the pin you buy. - Inch rows are SPIROL's ASME B18.8.2 slotted spring pin sheet (inches): nominal diameter, pin diameter D max / min, chamfer diameter B max, chamfer length C max / min, wall S (nominal), recommended hole max / min, and minimum double shear in lbf / kN. McMaster-Carr's inch tables agree on hole ranges and wall for the sizes checked: 1/16 in hole 0.062–0.065 in, wall 0.012 in; 1/8 in 0.125–0.129, wall 0.028; 1/4 in 0.250–0.256, wall 0.048; McMaster also prints a 1/16 in coiled pin at 0.061–0.065 in hole. Inch coiled pins (ASME B18.8.3 / B18.8.4 heavy-duty families) and ISO 13337 / DIN 7346 (light duty) were not tabulated: no source with checkable dimensions was read. - Not published as numbers in the sources read: the slot width of a slotted pin before or after mounting. No pin model is drawn for that reason. The files are hole gauges: plates with the published nominal holes. Metric gauge: 2, 3, 4, 5, 6, 8, 10, 12 mm (hole = nominal d1, the lower limit of H12). Inch gauge: the lower limit of SPIROL's recommended hole range. Plate thickness, spacing and corner radius are Xem's choices. - Clevis pins, R-clips and cotter pins are on the page pins-clevises-and-joints (it does not cover spring or roll pins); dowel pins: dowel-pins-metric. McMaster-Carr sells spring pins with per-part STEP; its slotted, coiled and metric roll-pin pages are linked, not copied. standard nominal pin dia before mounting max / min d2 (ref.) and chamfer a, or inch B / C wall s hole min double shear ISO 8752 slotted 1 mm 1.3 / 1.2 d2 0.8; a 0.35 / 0.15 0.2 nominal d1, H12 0.7 kN (steel, martensitic stainless) ISO 8752 slotted 1.5 mm 1.8 / 1.7 d2 1.1; a 0.45 / 0.25 0.3 nominal d1, H12 1.58 kN (steel, martensitic stainless) ISO 8752 slotted 2 mm 2.4 / 2.3 d2 1.5; a 0.55 / 0.35 0.4 nominal d1, H12 2.82 kN (steel, martensitic stainless) ISO 8752 slotted 2.5 mm 2.9 / 2.8 d2 1.8; a 0.6 / 0.4 0.5 nominal d1, H12 4.38 kN (steel, martensitic stainless) ISO 8752 slotted 3 mm 3.5 / 3.3 d2 2.1; a 0.7 / 0.5 0.6 nominal d1, H12 6.32 kN (steel, martensitic stainless) ISO 8752 slotted 3.5 mm 4.0 / 3.8 d2 2.3; a 0.8 / 0.6 0.75 nominal d1, H12 9.06 kN (steel, martensitic stainless) ISO 8752 slotted 4 mm 4.6 / 4.4 d2 2.8; a 0.85 / 0.65 0.8 nominal d1, H12 11.24 kN (steel, martensitic stainless) ISO 8752 slotted 4.5 mm 5.1 / 4.9 d2 2.9; a 1.0 / 0.8 1.0 nominal d1, H12 15.36 kN (steel, martensitic stainless) ISO 8752 slotted 5 mm 5.6 / 5.4 d2 3.4; a 1.1 / 0.9 1.0 nominal d1, H12 17.54 kN (steel, martensitic stainless) ISO 8752 slotted 6 mm 6.7 / 6.4 d2 4.0; a 1.4 / 1.2 1.2 nominal d1, H12 26.04 kN (steel, martensitic stainless) ISO 8752 slotted 8 mm 8.8 / 8.5 d2 5.5; a 2.0 / 1.6 1.5 nominal d1, H12 42.76 kN (steel, martensitic stainless) ISO 8752 slotted 10 mm 10.8 / 10.5 d2 6.5; a 2.4 / 2.0 2.0 nominal d1, H12 70.16 kN (steel, martensitic stainless) ISO 8752 slotted 12 mm 12.8 / 12.5 d2 7.5; a 2.4 / 2.0 2.5 nominal d1, H12 104.1 kN (steel, martensitic stainless) ISO 8752 slotted 13 mm 13.8 / 13.5 d2 8.5; a 2.4 / 2.0 2.5 nominal d1, H12 115.1 kN (steel, martensitic stainless) ISO 8752 slotted 14 mm 14.8 / 14.5 d2 8.5; a 2.4 / 2.0 3.0 nominal d1, H12 144.7 kN (steel, martensitic stainless) ISO 8752 slotted 16 mm 16.8 / 16.5 d2 10.5; a 2.4 / 2.0 3.0 nominal d1, H12 171.0 kN (steel, martensitic stainless) ISO 8752 slotted 18 mm 18.9 / 18.5 d2 11.5; a 2.4 / 2.0 3.5 nominal d1, H12 — (Westfield's 22.5 breaks the progression; not used) kN (steel, martensitic stainless) ISO 8752 slotted 20 mm 20.9 / 20.5 d2 12.5; a 3.4 / 3.0 4.0 nominal d1, H12 280.6 kN (steel, martensitic stainless) ISO 8752 slotted 21 mm 21.9 / 21.5 d2 13.5; a 3.4 / 3.0 4.0 nominal d1, H12 298.2 kN (steel, martensitic stainless) ISO 8752 slotted 25 mm 25.9 / 25.5 d2 15.5; a 3.4 / 3.0 5.0 nominal d1, H12 438.5 kN (steel, martensitic stainless) ISO 8752 slotted 28 mm 28.9 / 28.5 d2 17.5; a 3.4 / 3.0 5.5 nominal d1, H12 542.6 kN (steel, martensitic stainless) ISO 8752 slotted 30 mm 30.9 / 30.5 d2 18.5; a 3.4 / 3.0 6.0 nominal d1, H12 631.4 kN (steel, martensitic stainless) ISO 8752 slotted 32 mm 32.9 / 32.5 d2 20.5; a 3.6 / 3.0 6.0 nominal d1, H12 684 kN (steel, martensitic stainless) ISO 8752 slotted 35 mm 35.9 / 35.5 d2 21.5; a 3.6 / 3.0 7.0 nominal d1, H12 859 kN (steel, martensitic stainless) ISO 8752 slotted 38 mm 38.9 / 38.5 d2 23.5; a 4.6 / 4.0 7.5 nominal d1, H12 1003 kN (steel, martensitic stainless) ISO 8752 slotted 40 mm 40.9 / 40.5 d2 25.5; a 4.6 / 4.0 7.5 nominal d1, H12 1068 kN (steel, martensitic stainless) ISO 8752 slotted 45 mm 45.9 / 45.5 d2 28.5; a 4.6 / 4.0 8.5 nominal d1, H12 1360 kN (steel, martensitic stainless) ISO 8752 slotted 50 mm 50.9 / 50.5 d2 31.5; a 4.6 / 4.0 9.5 nominal d1, H12 1685 kN (steel, martensitic stainless) ISO 8750 coiled 0.8 mm 0.91 / 0.85 d2 max 0.75; a 0.3 0.07 nominal d1, H12 0.4 kN steel; 0.3 kN austenitic stainless ISO 8750 coiled 1 mm 1.15 / 1.05 d2 max 0.95; a 0.3 0.08 nominal d1, H12 0.6 kN steel; 0.45 kN austenitic stainless ISO 8750 coiled 1.2 mm 1.35 / 1.25 d2 max 1.15; a 0.4 0.10 nominal d1, H12 0.9 kN steel; 0.65 kN austenitic stainless ISO 8750 coiled 1.5 mm 1.75 / 1.62 d2 max 1.40; a 0.5 0.13 nominal d1, H12 1.45 kN steel; 1.05 kN austenitic stainless ISO 8750 coiled 2 mm 2.25 / 2.13 d2 max 1.90; a 0.7 0.17 nominal d1, H12 2.5 kN steel; 1.9 kN austenitic stainless ISO 8750 coiled 2.5 mm 2.78 / 2.65 d2 max 2.40; a 0.7 0.21 nominal d1, H12 3.9 kN steel; 2.9 kN austenitic stainless ISO 8750 coiled 3 mm 3.30 / 3.15 d2 max 2.90; a 0.9 0.25 nominal d1, H12 5.5 kN steel; 4.2 kN austenitic stainless ISO 8750 coiled 3.5 mm 3.84 / 3.67 d2 max 3.40; a 1 0.29 nominal d1, H12 7.5 kN steel; 5.7 kN austenitic stainless ISO 8750 coiled 4 mm 4.40 / 4.20 d2 max 3.90; a 1.1 0.33 nominal d1, H12 9.6 kN steel; 7.6 kN austenitic stainless ISO 8750 coiled 5 mm 5.50 / 5.25 d2 max 4.85; a 1.3 0.42 nominal d1, H12 15 kN steel; 11.5 kN austenitic stainless ISO 8750 coiled 6 mm 6.50 / 6.25 d2 max 5.85; a 1.5 0.50 nominal d1, H12 22 kN steel; 16.8 kN austenitic stainless ISO 8750 coiled 8 mm 8.63 / 8.30 d2 max 7.80; a 2 0.67 nominal d1, H12 39 kN steel; 30 kN austenitic stainless ISO 8750 coiled 10 mm 10.80 / 10.35 d2 max 9.75; a 2.5 0.84 nominal d1, H12 62 kN steel; 48 kN austenitic stainless ISO 8750 coiled 12 mm 12.85 / 12.40 d2 max 11.70; a 3 1 nominal d1, H12 89 kN steel; 67 kN austenitic stainless ISO 8750 coiled 14 mm 14.95 / 14.45 d2 max 13.60; a 3.5 1.20 nominal d1, H12 120 kN steel; — kN austenitic stainless ISO 8750 coiled 16 mm 17.00 / 16.45 d2 max 15.60; a 4 1.30 nominal d1, H12 155 kN steel; — kN austenitic stainless ISO 8750 coiled 20 mm 21.10 / 20.40 d2 max 19.60; a 4.5 1.70 nominal d1, H12 250 kN steel; — kN austenitic stainless ASME B18.8.2 slotted (inch, SPIROL) 1/16 (.062) in .069 / .066 B max .059; C .028 / .007 .012 .065 / .062 in 430 / 1.91 lb / kN carbon & martensitic; 250 / 1.11 austenitic ASME B18.8.2 slotted (inch, SPIROL) 5/64 (.078) in .086 / .083 B max .075; C .032 / .008 .018 .081 / .078 in 800 / 3.56 lb / kN carbon & martensitic; 460 / 2.05 austenitic ASME B18.8.2 slotted (inch, SPIROL) 3/32 (.094) in .103 / .099 B max .091; C .038 / .008 .022 .097 / .094 in 1,150 / 5.12 lb / kN carbon & martensitic; 670 / 2.98 austenitic ASME B18.8.2 slotted (inch, SPIROL) 1/8 (.125) in .135 / .131 B max .122; C .044 / .008 .028 .129 / .125 in 1,875 / 8.34 lb / kN carbon & martensitic; 1,090 / 4.85 austenitic ASME B18.8.2 slotted (inch, SPIROL) 5/32 (.156) in .167 / .162 B max .151; C .048 / .010 .032 .160 / .156 in 2,750 / 12.23 lb / kN carbon & martensitic; 1,600 / 7.12 austenitic ASME B18.8.2 slotted (inch, SPIROL) 3/16 (.187) in .199 / .194 B max .182; C .055 / .011 .040 .192 / .187 in 4,150 / 18.46 lb / kN carbon & martensitic; 2,425 / 10.79 austenitic ASME B18.8.2 slotted (inch, SPIROL) 1/4 (.250) in .264 / .258 B max .245; C .065 / .012 .048 .256 / .250 in 7,050 / 31.36 lb / kN carbon & martensitic; 4,100 / 18.24 austenitic ASME B18.8.2 slotted (inch, SPIROL) 5/16 (.312) in .330 / .321 B max .306; C .080 / .014 .062 .318 / .312 in 10,800 / 48.04 lb / kN carbon & martensitic; 6,300 / 28.02 austenitic ASME B18.8.2 slotted (inch, SPIROL) 3/8 (.375) in .395 / .385 B max .368; C .095 / .016 .077 .382 / .375 in 16,300 / 72.51 lb / kN carbon & martensitic; 9,500 / 42.26 austenitic ASME B18.8.2 slotted (inch, SPIROL) 1/2 (.500) in .524 / .513 B max .485; C .110 / .025 .094 .510 / .500 in 27,100 / 120.55 lb / kN carbon & martensitic; 15,800 / 70.28 austenitic Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - Westfield Fasteners: Slotted spring pins ISO 8752 (replaces DIN 1481): d1 max / min before mounting, d2, a, s, min double-shear force, 1 to 50 mm — web — Publisher's page; dimensions are facts — https://westfieldfasteners.co.uk/Standards/Pin-RollSlot.pdf - iTeh Standards: ISO 8752:2009 sample pages: Table 1 (d1, d2, a max / min, s, double shear), hole H12, chamfer — web — Standards-body sample pages; numbers only — https://cdn.standards.iteh.ai/samples/40658/df4caae79e6b4325b3bc70097ffa4274/ISO-8752-2009.pdf - Westfield Fasteners: Coiled spring pins ISO 8750 (spiral roll pins): d1 max / min before mounting, d2, a, s, min double-shear force, 0.8 to 20 mm — web — Publisher's page; dimensions are facts — https://westfieldfasteners.co.uk/Standards/Pin-SprgCoil.pdf - iTeh Standards: ISO 8750:2007 sample pages: Table 1 (d1, d2, s, double shear), hole H12, swaged chamfer — web — Standards-body sample pages; numbers only — https://cdn.standards.iteh.ai/samples/40660/50d17b49b4994eb58f15a1b5a126a80c/ISO-8750-2007.pdf - SPIROL: Slotted spring pins, inch (ASME B18.8.2): nominal diameter, pin diameter max / min, chamfer B / C, wall S, recommended hole max / min, double shear — web — Maker data sheet; numbers only — https://cdn.shopify.com/s/files/1/0492/3631/2223/files/SPIROL-Slotted-Spring-Pins-us.pdf - SPIROL: ISO 8752 slotted spring pin, 5 mm: diameter 5.40–5.60, recommended hole 5.00–5.12, chamfer 0.90–1.10, double shear 17.54 kN — web — Publisher's page; dimensions are facts — https://shop.spirol.com/printitem/slotted-spring-pins/iso-8752-slotted-spring-pins-metric/72146 - McMaster-Carr: Slotted spring pins (free STEP/IGES per part, for your own design use; no redistribution) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/dowel-pins/slotted-spring-pins-6/ - McMaster-Carr: Coiled spring pins (free STEP/IGES per part, for your own design use; no redistribution) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/pins/shaft-type~coiled/ - McMaster-Carr: Metric roll pins (slotted and coiled) (free STEP/IGES per part, for your own design use; no redistribution) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/products/metric-roll-pins/ Free files (CC BY 4.0, Xem Studio; STEP + STL, 2 parts): https://xemstudio.com/files/hardware/spring-pins-iso-8752-8750-asme-b18-8-2/index.json API: https://xemstudio.com/api/geometry?object=spring-pins-iso-8752-8750-asme-b18-8-2