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Flat washers, ISO 7090 (chamfered, normal series): M5–M64 bore, outside diameter, thickness + M30–M48 washer files

Name: Flat washers, ISO 7090 (chamfered, normal series): M5–M64 bore, outside diameter, thickness + M30–M48 washer files dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

What are the ISO 7090 washer dimensions, and how big is an M30 or M36 flat washer? · Standard part · basis: Westfield Fasteners' ISO 7090 table (M5 to M64), cross-checked on M10 against McMaster-Carr's DIN 125 / ISO 7089 listings; four large-size washer files

Also called: iso 7090 washer dimensions, m30 flat washer dimensions, m36 washer outside diameter, din 125 b washer, m48 washer thickness, m20 washer iso 7090, chamfered flat washer m12, iso 7090 m24 44 mm, washer size chart m5 to m64, m42 washer 78 mm

Exact dimensions. Every file is drawn at true size with no tolerance added. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your process's clearance before making the part. Mating features

length: 110.0 mm
width: 110.0 mm
height: 8.0 mm

Notes

ISO 7090 is the normal-series plain washer with a chamfered outside edge, product grade A, in 200 HV and 300 HV. Westfield's page says it replaces type B of DIN 125. Columns in mm: bore d1 (nominal = minimum, then maximum), outside d2 (nominal = maximum, then minimum), thickness h (nominal, max, min). Sizes in brackets are non-preferred, as printed.
Conflict kept: Westfield prints d2 = 21 for M10 with a minimum of 19.48. A nominal of 21 would give a minimum of about 20.5, and McMaster-Carr's DIN 125 / ISO 7089 M10 washers are listed at 10.5 mm bore by 20 mm outside, the same as the existing page flat-washers-metric-m10-m24. The M10 outside diameter is therefore uncertain here (20 or 21); no M10 file is made.
The chamfer size and angle are not given in the Westfield page, so the files are plain annuli at M30, M36, M42 and M48 (larger than the M2–M24 sizes already on this site). Hardness classes: 200 HV (HV 200–300) and 300 HV (HV 300–400); stainless is 200 HV only (Westfield).
Smaller sizes: flat-washers-metric (M2–M8) and flat-washers-metric-m10-m24 (ISO 7089 / DIN 125-A). Large-OD version: large-washers-din-9021-iso-7093.

Flat washers, ISO 7090 (chamfered, normal series): M5–M64 bore… size chart

thread	d1 nom = min	d1 max	d2 nom = max	d2 min	h nom	h max	h min
M5	5.3	5.48	10	9.64	1	1.1	0.9
M6	6.4	6.62	12	11.57	1.6	1.8	1.4
M8	8.4	8.62	16	15.57	1.6	1.8	1.4
M10	10.5	10.77	21 (as printed; see notes)	19.48	2	2.2	1.8
M12	13	13.27	24	23.48	2.5	2.7	2.3
(M14)	15	15.27	28	27.48	2.5	2.7	2.3
M16	17	17.27	30	29.48	3	3.3	2.7
(M18)	19	19.33	34	33.38	3	3.3	2.7
M20	21	21.33	37	36.38	3	3.3	2.7
(M22)	23	23.33	39	38.38	3	3.3	2.7
M24	25	25.33	44	43.38	4	4.3	3.7
(M27)	28	28.33	50	49.38	4	4.3	3.7
M30	31	31.39	56	55.26	4	4.3	3.7
(M33)	34	34.62	60	58.8	5	5.6	4.4
M36	37	37.62	64.8	64.8	5	5.6	4.4
(M39)	42	42.62	72	70.8	6	6.6	5.4
M42	45	45.62	78	76.8	8	9	7
(M45)	48	48.62	85	83.6	8	9	7
M48	52	52.74	92	90.6	8	9	7
(M52)	56	56.74	98	96.6	8	9	7
M56	62	62.74	105	103.6	10	11	9
(M60)	66	66.74	110	108.6	10	11	9
M64	70	70.74	115	113.6	10	11	9

Mating features

Drawn at the exact size. Open press, slide, run and socket features by your process's clearance (tolerances by process); leave designed gaps and clamp fits as drawn.

feature	exact	mates with	fit	files
bore (d1)	M30 31, M36 37, M42 45, M48 52 mm nominal	bolt of the thread size; plain cylinder	designed	washer-iso-7090-*
outside (d2)	M30 56, M36 64.8, M42 78, M48 92 mm	round counterbore that seats the washer: Ø = d2 + your process clearance	slide	washer-iso-7090-*

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Westfield Fasteners	ISO 7090 plain washers, chamfered, normal series, M5 to M64: d1, d2, h (nom / max / min)	web	Publisher's page; dimensions are facts
McMaster-Carr	DIN 125 A flat washers (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

Free files

★ Free files 4 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

washer-iso-7090-m30-d1-31-d2-56-h-4	M30 ISO 7090 washer at nominal size: bore Ø31, outside Ø56, thickness 4 mm; the outer-edge chamfer is not dimensioned in the source and is not modelled	STEP · STL
washer-iso-7090-m36-d1-37-d2-64.8-h-5	M36 ISO 7090 washer at nominal size: bore Ø37, outside Ø64.8, thickness 5 mm; the outer-edge chamfer is not dimensioned in the source and is not modelled	STEP · STL
washer-iso-7090-m42-d1-45-d2-78-h-8	M42 ISO 7090 washer at nominal size: bore Ø45, outside Ø78, thickness 8 mm; the outer-edge chamfer is not dimensioned in the source and is not modelled	STEP · STL
washer-iso-7090-m48-d1-52-d2-92-h-8	M48 ISO 7090 washer at nominal size: bore Ø52, outside Ø92, thickness 8 mm; the outer-edge chamfer is not dimensioned in the source and is not modelled	STEP · STL

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Plain text: sheet.txt · JSON: /api/geometry?object=flat-washers-iso-7090-m5-m64