DIN 125 Metric Flat Washers

Metric DIN 125 flat washers are standard metric flat washers – a round metal disk with a center hole. They are used under bolt heads or nuts. Flat washers help evenly distribute the clamping force of threaded fasteners, reducing the risk of damage or deformation to the workpiece surface.

51Fasteners Metric Flat Washers

51Fasteners offers a complete line of fasteners in both inch and metric standard sizes, covering a wide variety of materials and finishes. DIN 125 flat washers are available for immediate delivery from stock in diameters ranging from M3 to M72 in materials including aluminium, brass, nylon, 140HV steel, 200HV steel, 300HV steel and stainless steels A2, A4 etc.

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DIN 125 Flat Washer Metric Dimensions

DIN (German Institute for Standardization) standards apply to various components, including industrial fasteners such as metric DIN 125 flat washers. Although transitioning to ISO standards, DIN standards remain widely used in Germany, Europe, and globally. For components without ISO equivalents or those not requiring standardization, DIN standards continue to be adopted. The ISO equivalent standard for DIN 125 flat washers is ISO 7089; CSN 021702; PN 82006; UNI 6592.

Type A

Φ (mm)	d min (mm)	d max (mm)	dc max (mm)	dc min (mm)	h max (mm)	h min (mm)
Φ1.6	1.7	1.84	4	3.7	0.35	0.25
Φ1.7	1.8	1.94	4.5	4.2	0.35	0.25
Φ2	2.2	2.34	5	4.7	0.35	0.25
Φ2.4	2.5	2.64	6	5.7	0.55	0.45
Φ2.5	2.7	2.84	6	5.7	0.55	0.45
Φ2.6	2.8	2.94	7	6.64	0.55	0.45
Φ3	3.2	3.38	7	6.64	0.55	0.45
Φ3.5	3.7	3.88	8	7.64	0.55	0.45
Φ4	4.3	4.48	9	8.64	0.9	0.7
Φ5	5.3	5.48	10	9.64	1.1	0.9
Φ6	6.4	6.62	12	11.57	1.8	1.4
Φ7	7.4	7.62	14	13.57	1.8	1.4
Φ8	8.4	8.62	16	15.57	1.8	1.4
Φ10	10.5	10.77	20	19.48	2.2	1.8
Φ12	13	13.27	24	23.48	2.7	2.3
Φ14	15	15.27	28	27.48	2.7	2.3
Φ16	17	17.27	30	29.48	3.3	2.7
Φ18	19	19.33	34	33.38	3.3	2.7
Φ20	21	21.33	37	36.38	3.3	2.7
Φ22	23	23.33	39	38.38	3.3	2.7
Φ24	25	25.33	44	43.38	4.3	3.7
Φ26	27	27.33	50	49.38	4.3	3.7
Φ27	28	28.33	50	49.38	4.3	3.7
Φ28	29	29.33	50	49.38	4.3	3.7
Φ30	31	31.39	56	55.26	4.3	3.7
Φ32	33	33.62	60	58.8	5.6	4.4
Φ33	34	34.62	60	58.8	5.6	4.4
Φ35	36	36.62	66	64.8	5.6	4.4
Φ36	37	37.62	66	64.8	5.6	4.4

Type B

(mm)	Φ5	Φ6	Φ7	Φ8	Φ10	Φ12	Φ14	Φ16	Φ18	Φ20	Φ22	Φ24	Φ26	Φ27	Φ28	Φ30	Φ32	Φ33	Φ35	Φ36	Φ38	Φ39	Φ40	Φ42	Φ45	Φ48	Φ50	Φ52	Φ55	Φ56	Φ56	Φ58	Φ60	Φ64	Φ68	Φ72	Φ76	Φ80	Φ85	Φ90	Φ95	Φ100	Φ105	Φ110	Φ115	Φ120	Φ125	Φ130	Φ135	Φ140	Φ145	Φ150	Φ160
d min	5.3	6.4	7.4	8.4	10.5	13	15	17	19	21	23	25	27	28	29	31	33	34	36	37	39	40	41	43	46	50	52	54	57	58	58	60	62	66	70	74	78	82	87	93	98	104	109	114	119	124	129	134	139	144	149	155	165
d max	5.48	6.62	7.62	8.62	10.77	13.27	15.27	17.27	19.33	21.33	23.33	25.33	27.33	28.33	29.33	31.39	33.62	34.62	36.62	37.62	39.64	40.62	41.62	43.62	46.62	50.62	52.74	54.74	57.74	58.74	58.74	60.74	62.74	66.74	70.74	74.74	78.74	82.87	87.87	93.87	98.87	104.87	109.87	114.87	119.87	125	130	135	140	145	150	156	166
dc max	10	12	14	16	20	24	28	30	34	37	39	44	50	50	50	56	60	60	66	66	72	72	72	78	85	92	92	98	105	105	105	110	110	115	120	125	135	140	145	160	165	175	180	185	200	210	220	220	230	240	250	250	250
dc min	9.64	11.57	13.57	15.57	19.48	23.48	27.48	29.48	33.38	36.38	38.38	43.38	49.38	49.38	49.38	55.26	58.8	58.8	64.8	64.8	70.8	70.8	70.8	76.8	83.6	90.6	90.6	96.6	103.6	103.6	103.6	108.6	108.6	113.6	118.6	123.4	133.4	138.4	143.4	158.4	163.4	173.4	178.4	183.15	188.15	208.15	218.15	218.15	228.15	238.15	248.15	248.15	248.15
h max	1.1	1.8	1.8	1.8	2.2	2.7	2.7	3.3	3.3	3.3	3.3	4.3	4.3	4.3	4.3	4.3	5.6	5.6	5.6	5.6	6.6	6.6	6.6	8	8	9	9	9	10	10	10	10	10	10	11	11	11	13.2	13.2	13.2	13.2	15.2	15.2	15.2	15.2	17.2	17.2	17.2	17.2	19.2	19.2	19.2	19.2
h min	0.9	1.4	1.4	1.4	1.8	2.3	2.3	2.7	2.7	2.7	2.7	3.7	3.7	3.7	3.7	3.7	4.4	4.4	4.4	4.4	5.4	5.4	5.4	6	6	6	7	7	8	8	8	8	8	8	9	9	9	10.8	10.8	10.8	10.8	12.8	12.8	12.8	12.8	14.8	14.8	14.8	14.8	16.8	16.8	16.8	16.8