DIN 6924 Hexagon Self-Locking Nut

The DIN 6924 standard covers a self-locking nut designed to protect joints from spontaneous loosening under dynamic loads or vibration. The shape is the traditional hexagon, convenient for installation with a wrench or power tool.

The distinctive feature of this product is a non-metallic insert in the threaded hole. When a bolt or stud is screwed in, the insert deforms and prevents the fastener from loosening on its own. Nuts of this type are widely used in industry to increase the reliability of part fixation.

Materials

The nuts are made of carbon steels of property classes 5, 8, 10, 12. The choice of class depends on the magnitude of the loads the joint will constantly experience. A zinc coating applied by the galvanic method is used for corrosion protection. It provides resistance to moisture and an aggressive external environment.

Nuts manufactured to this standard have the following dimensional characteristics:

• Thread diameter — from M3 to M48.
• Width across flats — from 5.5 to 75 mm.
• Nut height — from 4.2 to 48 mm.

The closest equivalents are manufactured to ISO 7040 or ISO 10512, with possible minor discrepancies in sizes. Consultants can help select a suitable item.

Application options

Self-locking fasteners are widely used in various engineering industries: in the manufacture of machine tools, automobiles and other vehicles, ships, and industrial equipment. Such nuts ensure reliable fixation of components, preventing loose joints and mechanism failures.

FLOK supplies self-locking nuts DIN 6924 in various sizes for use in the industries listed above. Wholesale orders are available with delivery to any region of Russia. Consultations on selection and finding equivalents are provided.

Dimensions of hexagon self-locking nuts DIN 6924 in mm

d	s	h	m	e min
M3	5.5	4.2 - 4.5	2.15	6.01
M4	7	5.7 - 6.0	2.9	7.66
M5	8	6.44 - 6.8	4.4	8.79
M6	10	7.64 - 8.0	4.9	11.05
M7	11	8.64 - 9.0	6.14	12.12
M8	13	9.14 - 9.5	6.44	14.38
M10	16	11.5 - 11.9	8.04	17.77
M12	18	14.5 - 14.9	10.37	20.03
M14	21	16.3 - 17.0	12.1	23.35
M16	24	18.3 - 19.1	14.1	26.75
M18	27	19.8 - 20.6	15.1	29.56
M20	30	21.5 - 22.8	16.9	32.95
M22	34	23.2 - 24.5	18.1	37.29
M24	36	25.8 - 27.1	20.2	39.55
M27	41	29.4 - 31.0	22.5	45.20
M30	46	31.0 - 32.6	24.3	50.85
M33	50	33.9 - 35.5	27.4	55.37
M36	55	37.3 - 38.9	29.4	60.79
M39	60	40.4 - 42.0	31.8	66.44
M42	65	43.4 - 45.0	34	71.30
M45	70	46.4 - 48.0	36	76.95
M48	75	48.4 - 50.0	38	82.6

d	s	h	m	e
M3	5.5	4.2 - 4.5	2.15	6.01
M4	7	5.7 - 6.0	2.9	7.66
M5	8	6.44 - 6.8	4.4	8.79
M6	10	7.64 - 8.0	4.9	11.05
M7	11	8.64 - 9.0	6.14	12.12
M8	13	9.14 - 9.5	6.44	14.38
M10	16	11.5 - 11.9	8.04	17.77
M12	18	14.5 - 14.9	10.37	20.03
M14	21	16.3 - 17.0	12.1	23.35
M16	24	18.3 - 19.1	14.1	26.75
M18	27	19.8 - 20.6	15.1	29.56
M20	30	21.5 - 22.8	16.9	32.95
M22	34	23.2 - 24.5	18.1	37.29
M24	36	25.8 - 27.1	20.2	39.55
M27	41	29.4 - 31.0	22.5	45.20
M30	46	31.0 - 32.6	24.3	50.85
M33	50	33.9 - 35.5	27.4	55.37
M36	55	37.3 - 38.9	29.4	60.79
M39	60	40.4 - 42.0	31.8	66.44
M42	65	43.4 - 45.0	34	71.30
M45	70	46.4 - 48.0	36	76.95
M48	75	48.4 - 50.0	38	82.60