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DIN 601 Hex Bolt
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DIN 601 Hex Bolt

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Product Description

DIN 601 - Hexagon head bolts with nut, production class C

Leader-Fastener® DIN 601 Hex Bolt are hex headed fasteners with external machine screw threads and differ from hex machine bolts by having a washer surface on the underside or bearing side of the head and a chamfered thread end. Hex cap screws have tighter dimensional tolerances than bolts. Metric hex cap screws are specified by various DIN, ISO and JIS standards, and US/Imperial hex cap screws are dimensionally specified by the ASME B18.2.1 specification.

Hexagon bolts are hexagon head bolts (partial thread) - grade C and hex head bolts (full thread) - grade C, also known as hexagon head bolts (rough) hair hexagon head bolts, black iron screws. Hexagon bolts refer to fasteners composed of heads and screws. The bolts are divided into iron bolts and stainless steel bolts according to their materials. According to the grade of iron, there are 4.8 grade bolts and 8.8 grade bolts. Stainless steel bolts are made of stainless steel SUS201 bolts, SUS304 bolts, and SUS316 bolts.

In addition, in order to meet the needs of locking after installation, there are holes in the head and holes in the rod. These holes can prevent the bolts from loosening when they are subjected to vibration. Some bolts without threads should be made thin, called thin-waisted bolts. This kind of bolt is conducive to the connection of variable forces. There are special high-strength bolts on the steel structure. The head will be larger. The size will also change. In addition, there are special uses: T-slot bolts, most used on machine tool fixtures, special shapes, and both sides of the head should be cut off. Anchor bolts are used for machine and ground connection and fixing, there are many shapes, U-shaped bolts , as mentioned above, etc. There are also special studs for welding, one end has a thread and the other end is not, which can be welded on the part, and the other side can directly screw the nut.


Leader-Fastener® DIN 601 - 1987 M5 to M52 hexagon head bolts—Product grade C

Screw Thread d M5 M6 M8 M10 M12 M16 M20 M24 (M27)
P Pitch 0.8 1 1.25 1.5 1.75 2 2.5 3 3
b L≤125 16 18 22 26 30 38 46 54 60
125<L≤200 22 24 28 32 36 44 52 60 66
L>200 35 37 41 45 49 57 65 73 79
c max 0.5 0.5 0.6 0.6 0.6 0.8 0.8 0.8 0.8
da max 6 7.2 10.2 12.2 14.7 18.7 24.4 28.4 32.4
dw min 6.7 8.7 11.4 15.4 17.2 22 27.7 33.2 38
ds Nominal Size 5 6 8 10 12 16 20 24 27
min 4.52 5.52 7.42 9.42 11.3 15.3 19.16 23.16 26.16
max 5.48 6.48 8.58 10.58 12.7 16.7 20.84 24.84 27.84
e min 8.63 10.89 14.2 18.72 20.88 26.17 32.95 39.55 45.2
k Nominal Size 3.5 4 5.3 6.4 7.5 10 12.5 15 17
min 3.12 3.62 4.92 5.95 7.05 9.25 11.6 14.1 16.1
max 3.88 4.38 5.68 6.85 7.95 10.75 13.4 15.9 17.9
k1 min 2.2 2.5 3.45 4.2 4.95 6.5 8.1 9.9 11.3
r min 0.2 0.25 0.4 0.4 0.6 0.6 0.8 0.8 1
s max=nominal size 8 10 13 17 19 24 30 36 41
min 7.64 9.64 12.57 16.57 18.48 23.16 29.16 35 40
Weight of per 1000 steel products(≈kg) - - - - - - - - -
Length of Thread b - - - - - - - - -


Screw Thread d M30 (M33) M36 (M39) M42 (M45) M48 (M52)
P Pitch 3.5 3.5 4 4 4.5 4.5 5 5
b L≤125 66 72 78 84 - - - -
125<L≤200 72 78 84 90 96 102 108 116
L>200 85 91 97 103 109 115 121 129
c max 0.8 0.8 0.8 1 1 1 1 1
da max 35.4 38.4 42.4 45.4 48.6 52.6 56.6 62.6
dw min 42.7 46.5 51.1 55.9 59.9 64.7 69.4 74.2
ds Nominal Size 30 33 36 39 42 45 48 52
min 29.16 32 35 38 41 44 47 51
max 30.84 34 37 40 43 46 49 53
e min 50.85 55.37 60.79 66.44 71.3 76.95 82.6 88.25
k Nominal Size 18.7 21 22.5 25 26 28 30 33
min 17.65 19.95 21.45 23.95 24.95 26.95 28.95 31.75
max 19.75 22.05 23.53 26.05 27.05 29.05 31.05 34.25
k1 min 12.4 14 15 16.8 17.5 18.9 20.2 22.2
r min 1 1 1 1 1.2 1.2 1.6 1.6
s max=nominal size 46 50 55 60 65 70 75 80
min 45 49 53.8 58.8 63.1 68.1 73.1 78.1
Weight of per 1000 steel products(≈kg) - - - - - - - -
Length of Thread b - - - - - - - -




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