DIN 1441 Flat Washer for Pins

Flat washers that meet the technical characteristics and geometric parameters of the German standard DIN 1441 have a special purpose. Unlike other fasteners that work with bolts, screws and self-tapping screws, this type of fastener is used together with pins and dowel pins.

In appearance, the DIN 1441 washer is a solid ring with flat surfaces on both sides. The products differ from each other in inner and outer diameter, thickness, and material. Steel alloys with electroplated zinc coating or nickel-plated are used, as well as austenitic chromium-nickel steels of class A1–A5, and brass. For special cases, other non-ferrous alloys or technical plastic are used.

Flat washers for pins are used in the assembly of machines and units for various purposes. They are used in the production of instruments and electrical devices, as well as in construction. The washer protects the surfaces being joined from crushing when the fastener is tightened, and protects the joint itself from self-loosening.

FLOK’s offering

FLOK’s catalogue includes flat washers DIN 1441 for pins and dowel pins in various sizes. The products fully comply with the requirements of the stated standard.

d₁	d₂	s	d
5.5	10	0.8	5
7	12	1.6	6
8	14	1.6	7
9	16	2	8
11	20	2.5	10
13	25	3	12
15	28	3	14
17	28	3	16
19	30	4	18
21	32	4	20
23	34	4	22
25	38	4	24
28	40	5	27
31	45	5	30
34	50	5	32/33
37	52	6	35/36
41	58	6	40
46	62	7	45
51	68	8	50
56	75	9	55
62	80	9	60
68	90	9	65
72	95	10	70
78	100	10	75
82	110	12	80
86	110	12	85
92	115	12	90
102	125	14	100

Designations:

d₁ - washer inner diameter

d₂ - outer diameter

s - thickness of the reinforced washer

d - pin, dowel pin diameter