Nuts

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Dome Nut

Hexagon Dome Nuts


Description:

Hex dome nuts or acorn nuts got their names due to the dome-shaped projection on one side of the nut. This is mostly used to protect objects close to the ends of screws from scratches and structural injuries. It also reduces the effects of physical mishaps on human skin if it somehow forcefully hits the fasteners. The external threads of the screws inserted into these nuts are securely enclosed within the dome. In addition to the protection it offers, these nuts provide the structure an aesthetically pleasing look.

It is available in stainless steel, carbon steel, and alloy steel to bear more wear and tear while also making it more corrosion resistant. The dome nuts come in different sizes, allowing you to use them on screws with any length. By default, the size of the nut is ‘small’ which means it is used for shorter screws. The small projections on the other side provide the structure with the necessary friction to prevent loosening due to vibrations.


Dimensional Standards:

DIN 1587


Size range:

Metric: M3 to M30
Inches: Nil

Dome Nut Dimensions

din 1587 hex dome nut dimensions

DIN 1587 - Hexagon domed cap nuts

Equivalent norms: PN 82181; UNI 5721;

Legend:
s - size of the hexagon
t - length of the thread
d - the nominal diameter of the thread
h - height of the nut
m - hight of the nut part
dk - head diameter
da - Turning diameter shrinkage
dw - contact surface diameter
mw - minimum wrenching height
Makings:
Steel: 6
Stainless: A2,A4
Plastic: Plastic Pa
Non Ferrous: Brass
Thread: 6H
Notes:
Table according to DIN 1587:
dimensions in mm

threadSeries 1M4M5M6M8M10M12(M14)M16(M18)M20(M22)M24
 Series 2---M8x1M10x1M12x1,5(M14x1,5)(M16x1,5)(M18x1,5)M20x2(M22x1,5)M24x2
 Series 3----M10x1,25M12x1,25--(M18x2)M20x1,5(M22x2)-
PSeries 10,70,811,251,51,75222,52,52,53
damin.45681012141618202224
max.4,65,756,758,7510,81315,117,319,521,623,725,9
dkmax.6,57,59,512,51517202326283334
dwmin.5,96,98,911,614,616,619,622,524,927,731,433,3
e min.Product grade A7,668,7911,0514,3817,7720,0323,3526,7530,1433,5337,7239,98
Product grade B7,58,6310,8914,217,5919,8522,7826,1729,5632,9537,2939,55
x max.Series 11,41,622,53-------
Series 2---22-------
Series 3----2,5-------
g2 max.Series 1-----6,47,37,39,39,39,310,7
Series 2-----5,65,65,65,67,35,67,3
Series 3-----4,9--7,35,67,3-
hmax. nominal size81012151822252832343942
min. P. grade A7,649,6411,5714,5717,5721,4824,4827,4832,3833,3838,3841,38
min. P. grade B7,429,4211,314,317,321,1624,1627,1631333841
mmax.3,2456,58810111315161819
min.2,93,74,76,147,649,6410,312,314,314,916,917,7
Mwmin.2,322,963,764,916,117,718,249,8411,4411,9213,5214,16
rapprox.3,253,754,756,257,58,51011,5131416,517
sMax. = nominal size7810131618212427303436
min. P. grade A6,787,789,7812,7315,7317,7320,6723,6726,6729,6733,3835,38
min. P. grade B6,647,649,6412,5715,5717,5720,1623,1626,1629,163335
tmin.5,267,217,7110,6512,6515,6517,6520,5824,5825,5828,5830,5
max.5,747,798,2911,3513,3516,3518,3521,4225,4226,4229,4231,5
wmin.222223445556
Weight kg/1000pcs --4,661120,128,3-54,395104 
dome nut inches

Dome nut inches

One Piece Cap (Acorn) Closed-End Hex Cap Nuts, Low Crown

Nominal Size or Basic Major Diameter of ThreadWidth Across Flats(F)Width Across Corners(G)Body Diameter(A)Overall Height(H)Hexagon Height(Q)Drill Depth(T)Full Thread(U)
  MaxMinMaxMin   MaxMin
60.1380.31250.3020.3610.3440.30.340.160.250.16
80.1640.31250.3020.3610.3440.30.340.160.250.16
100.190.3750.3620.4330.4130.360.410.190.280.19
434690.250.43750.4280.5050.4880.410.470.220.340.25
436010.31250.50.4890.5770.5570.470.530.250.410.31
435320.3750.56250.5510.650.6280.530.620.280.450.38
434670.50.750.7360.8660.840.720.810.380.590.5
435930.6250.93750.9221.0831.0510.9110.470.750.62
435280.751.06251.0451.2271.1911.031.160.530.880.75

Two Piece Closed-End Hex Cap Nuts

Nominal Size or Basic Major Diameter of ThreadWidth Across Flats(F)Width Across Corners(G)Overall Height(H)
  MaxMinMaxMinMaxMin
40.1120.2480.225--0.20.177
50.1250.31250.3020.3610.3440.260.24
60.1380.31250.3020.3610.3440.260.24
80.1640.31250.3020.3610.3440.260.24
100.190.3750.3620.4330.4130.2910.271
434690.250.43750.4230.5050.4820.3380.318
436010.31250.5620.5450.650.6210.3850.365
435320.3750.6250.6070.7220.6920.4320.412
436620.43750.6730.6590.7750.750.680.66
434670.50.750.7360.8660.840.5720.552
437240.56250.8750.8611.010.9820.4820.462
435930.6250.9380.9091.0831.0370.8070.787
435280.751.121.08--1.121.08
436540.8751.251.2121.4431.3821.421.38
111.4971.4471.7281.651.5721.414

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