Wave spring washers: DIN 137 types A and B (M1.4–M36), bearing preload wave washers, Smalley wave spring example — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/wave-spring-washers-din-137/ (sheet CC BY 4.0) Basis: Westfield Fasteners' DIN 137 tables (type A M1.4 to M10, type B M3 to M36) cross-checked with ITA Fasteners' table (A / B M3 to M36, bearing wave washers) and Olander's M3 listing; one Smalley part as printed by IMS Supply; numbers only Catalog version: 2026-10-20 Sizes: see table below - Millimetres unless marked. DIN 137 wave (curved) spring washers: bore d1, outside diameter d2, thickness s, free height h min / max, for the thread the washer suits. Westfield notes the standard has been withdrawn without a direct replacement, but the washers are still made to it. Type B is tabulated M3 to M36 with a thickness tolerance (H14 on the bore, js16 on the OD per Westfield). ITA prints one table for 'A / B' with the same numbers as Westfield's type B for every size M3 to M36 (and Olander's M3 DIN 137 B: ID 3.2, OD 8, thickness 0.5, height 0.8 to 1.6, in agreement). - Disagreement: Westfield's type A table (M1.4 to M10) has different, smaller values for the same thread (M3 type A: OD 6, thickness 0.4, height 0.65 to 1.3; type B / ITA: OD 8, 0.5, 0.8 to 1.6). Both are shown with the source named; ITA does not separate A from B. - Bearing wave washers (ITA WB series, thickness ±0.1) fit between a bearing's outer ring and housing shoulder to preload it; the table gives the outside diameter De and inside diameter di limits and thickness T for the bearing type listed. ITA's load and height-at-load columns are not reproduced. - Smalley's multi-turn crest-to-crest wave springs are made in many sizes (catalogue tables by part number were not readable); one real part is shown as printed: CS075-L4, bore 0.750 in, shaft clearance 0.550 in, thickness 0.008 in, free height 0.500 in (reference), 3.5 waves per turn, 6 turns, 2 shims. No Smalley table, so no series is claimed. - No files: the wave amplitude profile (number of waves, crest shape) is not published as numbers in any table read, so a model would be invented. Conical forms: conical-spring-washers-din-6796. McMaster-Carr sells wave washers with per-part STEP; linked, not copied. standard / source size bore d1 (mm) OD d2 (mm) thickness s (mm) s tolerance free height h min / max (mm) DIN 137 type A (Westfield) M1.4 1.5 3.0 0.25 — 0.4 / 0.8 DIN 137 type A (Westfield) M1.6 1.8 4.0 0.25 — 0.45 / 0.9 DIN 137 type A (Westfield) M1.7 1.8 4.0 0.25 — 0.45 / 0.9 DIN 137 type A (Westfield) M2 2.2 4.5 0.3 — 0.5 / 1.0 DIN 137 type A (Westfield) M2.3 2.5 5.0 0.3 — 0.5 / 1.0 DIN 137 type A (Westfield) M2.5 2.6 5.5 0.3 — 0.55 / 1.1 DIN 137 type A (Westfield) M2.6 2.8 5.5 0.3 — 0.55 / 1.1 DIN 137 type A (Westfield) M3 3.2 6.0 0.4 — 0.65 / 1.3 DIN 137 type A (Westfield) M3.5 3.7 7.0 0.4 — 0.7 / 1.4 DIN 137 type A (Westfield) M4 4.3 8.0 0.5 — 0.8 / 1.6 DIN 137 type A (Westfield) M5 5.3 10.0 0.5 — 0.9 / 1.8 DIN 137 type A (Westfield) M6 6.4 11.0 0.5 — 1.1 / 2.2 DIN 137 type A (Westfield) M7 7.4 12.0 0.5 — 1.2 / 2.4 DIN 137 type A (Westfield) M8 8.4 15.0 0.5 — 1.7 / 3.4 DIN 137 type A (Westfield) M10 10.5 18.0 0.8 — 2.0 / 4.0 DIN 137 type B (Westfield; ITA identical) M3 3.2 8 0.5 ±0.05 0.8 / 1.6 DIN 137 type B (Westfield; ITA identical) M3.5 3.7 8 0.5 ±0.05 0.9 / 1.8 DIN 137 type B (Westfield; ITA identical) M4 4.3 9 0.5 ±0.05 1 / 2 DIN 137 type B (Westfield; ITA identical) M5 5.3 11 0.5 ±0.05 1.1 / 2.2 DIN 137 type B (Westfield; ITA identical) M6 6.4 12 0.5 ±0.05 1.3 / 2.6 DIN 137 type B (Westfield; ITA identical) M7 7.4 14 0.8 ±0.06 1.5 / 3 DIN 137 type B (Westfield; ITA identical) M8 8.4 15 0.8 ±0.06 1.5 / 3 DIN 137 type B (Westfield; ITA identical) M10 10.5 21 1 ±0.07 2.1 / 4.2 DIN 137 type B (Westfield; ITA identical) M12 13 24 1.2 ±0.07 2.5 / 5 DIN 137 type B (Westfield; ITA identical) M14 15 28 1.6 ±0.08 3 / 6 DIN 137 type B (Westfield; ITA identical) M16 17 30 1.6 ±0.08 3.2 / 6.4 DIN 137 type B (Westfield; ITA identical) M18 19 34 1.6 ±0.08 3.3 / 6.6 DIN 137 type B (Westfield; ITA identical) M20 21 36 1.6 ±0.08 3.7 / 7.4 DIN 137 type B (Westfield; ITA identical) M22 23 40 1.8 ±0.1 3.9 / 7.8 DIN 137 type B (Westfield; ITA identical) M24 25 44 1.8 ±0.1 4.1 / 8.2 DIN 137 type B (Westfield; ITA identical) M27 28 50 2 ±0.1 4.7 / 9.4 DIN 137 type B (Westfield; ITA identical) M30 31 56 2.2 ±0.1 5 / 10 DIN 137 type B (Westfield; ITA identical) M33 34 60 2.2 ±0.1 5.3 / 10.6 DIN 137 type B (Westfield; ITA identical) M36 37 68 2.5 ±0.15 5.8 / 11.6 bearing wave washer WB-312604 (ITA), for bearing 6201 — di 26.50 / 26.90 De 31.20 / 31.50 0.4 ±0.1 — bearing wave washer WB-383304 (ITA), for bearing 6203 — di 33.00 / 33.50 De 38.50 / 39.00 0.4 ±0.1 — bearing wave washer WB-453905 (ITA), for bearing 6204 — di 39.50 / 40.00 De 45.50 / 46.00 0.5 ±0.1 — bearing wave washer WB-494005 (ITA), for bearing 6205 / 6304 — di 40.50 / 41.00 De 49.50 / 50.00 0.5 ±0.1 — bearing wave washer WB-596005 (ITA), for bearing 6206 / 6305 — di 49.70 / 50.30 De 59.70 / 60.30 0.5 ±0.1 — bearing wave washer WB-696005 (ITA), for bearing 6306 — di 60.00 / 60.50 De 69.50 / 70.00 0.5 ±0.1 — bearing wave washer WB-776905 (ITA), for bearing 6308 — di 69.50 / 70.00 De 77.50 / 78.00 0.5 ±0.1 — bearing wave washer WB-877705 (ITA), for bearing 6308 — di 77.50 / 78.00 De 87.00 / 87.50 0.5 ±0.1 — bearing wave washer WB-998108 (ITA), for bearing 6309 — di 81.50 / 82.00 De 99.20 / 99.70 0.8 ±0.1 — bearing wave washer WB-1098908 (ITA), for bearing 6310 / 6212 — di 89.50 / 90.00 De 109.00 / 109.50 0.8 ±0.1 — bearing wave washer WB-1199908 (ITA), for bearing 6213 — di 99.50 / 100.00 De 119.00 / 120.00 0.8 ±0.1 — bearing wave washer WB-12210508 (ITA), for bearing 6214 — di 105.00 / 105.50 De 122.50 / 123.50 0.8 ±0.1 — bearing wave washer WB-15713409 (ITA), for bearing 6215 / 6218 — di 134.50 / 135.50 De 157.50 / 158.50 0.9 ±0.1 — bearing wave washer WB-16814009 (ITA), for bearing 6318 / 6219 — di 140.00 / 140.50 De 168.00 / 169.00 0.9 ±0.1 — Smalley CS075-L4 crest-to-crest wave spring (IMS Supply), inch — shaft clearance 0.550 in bore 0.750 in 0.008 in (wire thickness t) — free height 0.500 in (reference) Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - Westfield Fasteners: DIN 137 wave / curved spring lock washers: type A (M1.4 to M10) and type B (M3 to M36): d1, d2, s, h min / max — web — Publisher's page; dimensions are facts — https://westfieldfasteners.co.uk/Standards/Washer-SprgWav-M.html - ITA Fasteners: Wave washers: DIN 137 A / B (M3 to M36), bearing wave washers WB series, inch / mm table — web — Distributor page; numbers only — https://itafasteners.com/products-washers-wave-ball.php - Olander: M3 wave spring washer DIN 137 B, stainless: ID 3.2, OD 8, thickness 0.5, height 0.8 to 1.6 — web — Distributor page; numbers only — https://www.olander.com/items/.3NWAVS - IMS Supply (Smalley CS075-L4): Smalley crest-to-crest wave spring CS075-L4: bore 0.750 in, shaft clearance 0.550 in, thickness 0.008 in, free height 0.500 in, 3.5 waves per turn, 6 turns — web — Distributor page; numbers only — https://www.imssupply.com/catalog/smalley/cs075-l4.html - McMaster-Carr: Wave washers (spacers: washer type, wave) (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/spacers/washer-type~wave No true-size file yet: the published figures do not fix the whole shape; a measured scan is planned. API: https://xemstudio.com/api/geometry?object=wave-spring-washers-din-137