DIN 1816 Round Nut with Radial Holes for Pins

DIN 1816 is a standard for round nuts equipped with a main internally threaded hole and additional blind side holes: they are designed for fitting pins. The thread has a fine pitch to increase the number of engaged turns, giving the nut extra holding strength and protection against self-loosening.

Special hook-shaped wrenches are used to install such nuts; the product can be used where installing standard hexagon nuts is not possible.

Materials and features

Fasteners of this type are made of St steel; the standard does not specify a protective coating for it. The steel has property class 8 or 10, and the metal has increased load resistance. If the nut is intended for use in highly corrosive environments, it is made of A2 or A4 stainless steel.

The product has the following set of features:

• The thread diameter can range from M8 to M40.
• The thread pitch is from 1 to 1.5 mm.
• The nut height can vary from 5 to 12 mm.
• The overall nut diameter is from 20 to 62 mm.

Similar fasteners are manufactured to the Russian standard GOST 6393-73.

Application options

Nuts of this type are used in mechanical engineering sectors: automotive manufacturing, production of special equipment, machine tools, and more. They can also be used in construction, where other types of fasteners cannot be installed.

FLOK supplies DIN 1816 round nuts in a wide range of sizes, including wholesale batches.

Dimensions of the DIN 1816 round nut in mm:

d1	d2	t	h
M8×1	20	4.5	5
M10×1	25	4.5	6
M12×1.5	28	5	6
M14×1.5	30	5	7
M16×1.5	32	6	7
M18×1.5	34	6	8
M20×1.5	36	6	8
M22×1.5	40	6	9
M24×1.5	42	6	9
M26×1.5	45	6	10
M28×1.5	50	7	10
M30×1.5	50	7	10
M32×1.5	52	7	11
M35×1.5	55	7	11
M38×1.5	58	8	11
M40×1.5	62	8	12
M42×1.5	62	8	12
M45×1.5	68	8	12
M48×1.5	75	10	13
M50×1.5	75	10	13
M52×1.5	80	10	13
M55×1.5	80	10	13
M58×1.5	90	10	13
M60×1.5	90	10	13
M62×1.5	95	12	14
M65×1.5	95	12	14
M68×1.5	100	12	14
M70×1.5	100	12	14
M72×1.5	110	12	14
M75×1.5	110	12	14
M80×2	115	12	16
M85×2	120	12	16
M90×2	130	12	16
M95×2	135	12	16
M100×2	145	12	16
M105×2	155	12	16
M110×2	155	12	16
M115×2	165	15	18
M120×2	165	15	18
M125×2	180	15	18

Dimensions of the DIN 1816 round nut in mm

d₁	d₂	d₃	d₄	h	t	z	q
M12×1.5	28	23	3	6	5	0.5	4
M16×1.5	32	27	4	7	6	0.5	4
M18×1.5	34	28	4	8	6	0.5	4
M20×1.5	36	30	4	8	6	0.5	4
M22×1.5	40	34	4	9	6	0.5	4
M24×1.5	42	36	4	9	6	0.5	4
M26×1.5	45	38	5	10	6	0.5	4
M28×1.5	50	43	5	10	7	0.5	4
M30×1.5	50	43	5	10	7	0.5	4
M35×1.5	55	48	5	11	7	0.5	4
M40×1.5	62	54	6	12	8	0.5	4
M42×1.5	62	54	6	12	8	0.5	4
M45×1.5	68	60	6	12	8	0.5	6
M48×1.5	75	67	6	13	10	0.5	6
M50×1.5	75	67	6	13	10	0.5	6
M55×1.5	80	70	6	13	10	0.5	6
M60×1.5	90	80	6	13	10	0.5	6
M70×1.5	100	90	8	14	12	0.5	6
M75×2	110	100	8	14	12	0.5	6
M80×2	115	105	8	16	12	1	6

Designations:

d₁ - nominal thread diameter

d₂ - outer diameter of the nut

d₃ - outer diameter of the collar

d₄ - diameter of the radial hole

h - nut height

t - depth of the radial hole

z - collar height

q - number of radial holes