DIN 125A Flat Washer Manufacturer

DIN 125AISO 7089DIN 9021USSSAE

• What information is needed for a flat washer RFQ?

  Standard and edition, size or ID/OD/thickness, tolerances, carbon steel grade, hardness requirement, surface finish, quantity, packaging, destination and document requirements. For a non-standard washer, add a drawing; a sample can help the factory review the request.

• What do the size tables confirm?

  The tables show reference dimensions and approximate weight per 1000 pieces for the listed standards. They do not confirm that every listed size, finish or quantity is available for production or supply; state the requirement in the RFQ and wait for factory confirmation.

• What material does DJ WASHERS state for this page?

  DJ WASHERS states carbon steel only for this flat-washer page. Specify the required carbon steel grade in the RFQ; the factory must confirm whether it can meet the grade and other requirements.

• Does this page confirm a specific finish or hardness?

  No specific surface finish or hardness is confirmed by this page. State the finish and hardness requirement in the RFQ and wait for factory confirmation.

• Can non-standard flat washers be made?

  For non-standard ID, OD or thickness, send a drawing with dimensions and tolerances. The factory must review production feasibility; this page does not promise tooling or non-standard supply.

• Are DIN 125A and ISO 7089 automatically equivalent or interchangeable?

  DIN 125A and ISO 7089 should not be treated as automatically equivalent or interchangeable. Check the standard edition, form, dimensions, tolerances, material, hardness and finish before ordering.

DIN 125A Flat Washer Dimensions and Weight

Reference dimensions and approximate weight are shown for M2-M72 in this table; this is not a confirmed production or supply range. State the required size in the RFQ and wait for factory confirmation. DIN 125A is a customer-facing designation; verify the standard and edition.

Bolt size	d nominal (= min)	d max	dc max (= nominal)	dc min	h nominal	h max	h min	Approx. steel weight / 1000 pcs (kg)
M2	2.2	2.34	5	4.70	0.3	0.35	0.25	0.037
M2.3	2.5	2.64	6	5.70	0.5	0.55	0.45	0.092
M2.5	2.7	2.84	6	5.70	0.5	0.55	0.45	0.088
M2.6	2.8	2.94	7	6.64	0.5	0.55	0.45	0.127
M3	3.2	3.38	7	6.64	0.5	0.55	0.45	0.119
M3.5	3.7	3.88	8	7.64	0.5	0.55	0.45	0.155
M4	4.3	4.48	9	8.64	0.8	0.9	0.7	0.308
M5	5.3	5.48	10	9.64	1	1.1	0.9	0.443
M6	6.4	6.62	12	11.57	1.6	1.8	1.4	1.02
M7	7.4	7.62	14	13.57	1.6	1.8	1.4	1.39
M8	8.4	8.62	16	15.57	1.6	1.8	1.4	1.83
M10	10.5	10.77	20	19.48	2	2.2	1.8	3.57
M12	13	13.27	24	23.48	2.5	2.7	2.3	6.27
M14	15	15.27	28	27.48	2.5	2.7	2.3	8.62
M16	17	17.27	30	29.48	3	3.3	2.7	11.3
M18	19	19.33	34	33.38	3	3.3	2.7	14.7
M20	21	21.33	37	36.38	3	3.3	2.7	17.2
M22	23	23.33	39	38.38	3	3.3	2.7	18.3
M24	25	25.33	44	43.38	4	4.3	3.7	32.3
M26	27	27.33	50	49.38	4	4.3	3.7	43.7
M27	28	28.33	50	49.38	4	4.3	3.7	42.3
M28	29	29.33	50	49.38	4	4.3	3.7	40.9
M30	31	31.39	56	55.26	4	4.3	3.7	53.6
M32	33	33.62	60	58.80	5	5.6	4.4	77.4
M33	34	34.62	60	58.80	5	5.6	4.4	75.3
M35	36	36.62	66	64.80	5	5.6	4.4	94.3
M36	37	37.62	66	64.80	5	5.6	4.4	92.1
M38	39	39.62	72	70.80	6	6.6	5.4	136
M39	40	40.62	72	70.80	6	6.6	5.4	133
M40	41	41.62	72	70.80	6	6.6	5.4	130
M42	43	43.62	78	76.80	7	8	6	183
M45	46	46.62	85	83.60	7	8	6	220
M48	50	50.62	92	90.60	8	9	7	294
M50	52	52.74	92	90.60	8	9	7	284
M52	54	54.74	98	96.60	8	9	7	330
M55	57	57.74	105	103.60	9	10	8	431
M56	58	58.74	105	103.60	9	10	8	425
M58	60	60.74	110	108.60	9	10	8	472
M60	62	62.74	110	108.60	9	10	8	458
M64	66	66.74	115	113.60	9	10	8	492
M68	70	70.74	120	118.60	10	11	9	586
M72	74	74.74	125	123.40	10	11	9	626

ISO 7089 Flat Washer Dimensions and Weight

Size	Inner Ø d (mm)	Outer Ø dc (mm)	Thickness h (mm)	Weight /1000 pcs (kg)
M2	1.7	4	0.3	0.024
M2	2.2	5	0.3	0.037
M2.5	2.7	6	0.5	0.088
M3	3.2	7	0.5	0.119
M3.5	3.7	8	0.5	0.155
M4	4.3	9	0.8	0.308
M5	5.3	10	1	0.443
M6	6.4	12	1.6	1.02
M8	8.4	16	1.6	1.83
M10	10.5	20	2	3.57
M12	13	24	2.5	6.27
M14	15	28	2.5	8.62
M16	17	30	3	11.3
M18	19	34	3	14.7
M20	21	37	3	17.2
M22	23	39	3	18.3
M24	25	44	4	32.3
M27	28	50	4	42.3
M30	31	56	4	53.6
M33	34	60	5	75.3
M36	37	66	5	92.1
M39	42	72	6	133
M42	45	78	8	183
M45	48	85	8	220
M48	52	92	8	294
M52	56	98	8	330
M56	62	105	10	425
M60	66	110	10	458
M64	70	115	10	492

DIN 9021 Large OD Washer Dimensions and Weight

Large OD flat washers for broader bearing area in bolted joints. Dimensions are reference data; production and supply require factory confirmation.

Bolt size	d nominal (= min)	d max	dc nominal (= max)	dc min	h nominal	h max	h min	Approx. steel weight / 1000 pcs (kg)
M2.5	2.7	2.84	8	7.64	0.8	0.9	0.7	0.28
M3	3.2	3.38	9	8.64	0.8	0.9	0.7	0.349
M3.5	3.7	3.88	11	10.57	0.8	0.9	0.7	0.529
M4	4.3	4.48	12	11.57	1	1.1	0.9	0.774
M5	5.3	5.48	15	14.57	1.2	1.4	1	1.46
M6	6.4	6.62	18	17.57	1.6	1.8	1.4	2.79
M7	7.4	7.62	22	21.48	2	2.2	1.8	5.29
M8	8.4	8.62	24	23.48	2	2.2	1.8	6.23
M10	10.5	10.77	30	29.48	2.5	2.7	2.3	12.2
M12	13	13.27	37	36.38	3	3.3	2.7	22.2
M14	15	15.27	44	43.38	3	3.3	2.7	31.6
M16	17	17.27	50	49.38	3	3.3	2.7	40.9
M18	20	20.52	56	54.1	4	4.6	3.4	67.4
M20	22	22.52	60	58.1	4	4.6	3.4	76.8
M24	26	26.84	72	70.1	5	6	4	139
M30	33	34	92	89.8	6	7	5	273
M36	39	40	110	107.8	8	9.2	6.8	522

USS Pattern Flat Washers

USS wide pattern, imperial sizing commonly used in North and South American markets. Dimensions are converted to mm for reference only; production and supply require factory confirmation.

Size	Inner Ø d (mm)	Outer Ø dc (mm)	Thickness h (mm)	Weight /1000 pcs (kg)
3/16	6.22	14.66	1.65	1.39
1/4	7.80	19.02	2.03	3.09
5/16	9.40	22.99	2.64	5.79
3/8	11.00	26.16	2.64	7.41
7/16	12.57	32.51	2.64	11.83
1/2	14.15	35.69	3.35	18.29
9/16	15.75	38.07	3.35	20.47
5/8	17.30	45.21	4.06	36.55
3/4	20.45	51.56	4.50	52.46
7/8	23.65	57.91	4.88	71.72
1	26.80	64.26	4.88	87.55
1-1/8	31.57	70.61	4.88	102.38
1-1/4	34.75	76.96	4.88	121.02
1-3/8	37.85	83.69	5.41	152.09
1-1/2	41.02	90.04	5.41	175.38

SAE Pattern Flat Washers

SAE narrow pattern, imperial sizing commonly used in North and South American markets. Dimensions are converted to mm for reference only; production and supply require factory confirmation.

Size	Inner Ø d (mm)	Outer Ø dc (mm)	Thickness h (mm)	Weight /1000 pcs (kg)
6#	3.84	9.91	1.65	0.66
8#	4.65	11.51	1.65	0.85
10#	5.44	13.08	1.65	1.09
12#	6.22	14.66	2.03	1.74
1/4	7.01	16.26	2.03	2.13
5/16	8.61	17.86	2.03	2.24
3/8	10.19	21.01	2.03	3.37
7/16	11.79	23.80	2.03	4.26
1/2	13.36	27.74	3.07	8.8
9/16	14.96	30.12	3.07	10.19
5/8	16.48	34.09	3.07	13.1
3/4	20.45	38.07	4.06	20.78
7/8	23.65	45.21	4.06	30.17
1	26.80	51.56	4.06	39.58
1-1/8	31.57	57.91	4.06	48.12
1-1/4	34.75	64.26	4.88	73.29
1-3/8	37.92	70.61	4.88	89.21
1-1/2	41.10	76.96	4.88	106.65