Washer 125A

Description

The DIN 125A washer is a flat, circular and uniformly cross-sectional fastener, designed to distribute the load of a screw or nut over a larger surface, preventing damage and providing stability. Its geometry allows for a secure fit and prevents vibration loosening, making it essential in mechanical and structural applications.

Assembly

The DIN 125A flat washer must be assembled by ensuring that the washer is placed between the screw head and the surface of the material to be fixed, ensuring an even distribution of the load. It is crucial that the washer is properly aligned and that the screw is tightened to its specified torque, preventing overtightening that could damage the washer or material. It is recommended to check the compatibility of materials to avoid corrosion.

Materials

DIN 125A washers are made of various materials such as carbon steel, stainless steel (A2, A4), brass and plastic (Nylon). Finishes include galvanized, phosphated, nickel-plated, chrome-plated and powder coatings. Each material and finish offers specific properties of corrosion resistance, hardness and electrical conductivity, adapting to different industrial applications.

Technical data

Para / For	D1	D2	H
M1 (#DIN)	1.1	3.2	0.3
M1.2 (#DIN)	1.3	3.6	0.3
M1.4 (#DIN)	1.5	3.8	0.3
M1.6	1.7	4	0.3
M1.7	1.8	4.5	0.3
M2	2.2	5	0.3
M2.3	2.5	6	0.5
M2.5	2.7	6	0.5
M2.6	2.8	7	0.5
M3	3.2	7	0.5
M3.5	3.7	8	0.5
M4	4.3	9	0.8
M5	5.3	10	1
M6	6.4	12	1.6
M7	7.4	14	1.6
M8	8.4	16	1.6
M10	10.5	20	2
M11 (#DIN)	12	24	2.5
M12	13	24	2.5
M14	15	28	2.5
M14.5 (#DIN)	14.5	22	2
M16	17	30	3
M18	19	34	3
M20	21	37	3
M22	23	39	3
M24	25	44	4
M26	27	50	4
M27	28	50	4
M30	31	56	4
M33	34	60	5
M36	37	66	5
M39	40	72	6
M42	43	78	7
M45	46	85	7
M48	50	92	8
M50	52	92	8
M52	54	98	8
M56	58	105	9
M58	60	110	9
M60	62	110	9
M64	66	115	9
M72	74	125	10

Technical drawing and installation parameters of the DIN 125A plain washers

This technical diagram defines the dimensions and geometric variables that are essential for the correct selection and installation of the DIN 125A plain washer, of uniform section and with an unchamfered outer edge. It shows the critical dimensions linked to the specification tables, such as the thread size of the bolt or nut it accompanies, the inside diameter (d1), the outside diameter (d2) and the height or thickness of the washer (h). Complying with these dimensions ensures a uniform distribution of the clamping load over a larger surface, protects the base material against marking and deformation and maintains the stability of the bolted joint.

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