Technical data for Hexagon flange bolts with or without knurled underhead heavy series

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This product is regulated by the following standards:

Standard DIN EN 1665

Equivalent standards

BS EN 1665

Hexagon flange bolts with or without knurled underhead heavy series

The standard (DIN EN 1665) specifies the characteristics of hexagon head fasteners with flange, with thread sizes from M5 up to M16 enclosed, heavy series, with property classes 8.8, 10.9 and A2-70.

Dimensions in mm - source DIN EN 1665
Publication date: 11/1998
d thread size	P	b (l<=125)	b (l>125<=200)	b (l>200)	c min	dk max.	k max	ds min	dr	e min.	s nom=/max.
M 5	0.8	16	-	-	1	11.8	5.8	4.82	≈ rolling dia.	8.71	8
M 6
M 8
M 10
M 12
M 14
M 16
M 20

DIN 1665 - commercial items
d thread size	M5	M6	M8	M10	M12	M14	M16	M20
nominal length l
25	X
30	X	X
35
40
45
50
55
60
65
70
80
90
100
110
120
130
140
150
160
180
200

Reproduced by permission of DIN Deutsches Institut für Normung e. V. The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from Beuth Verlag GmbH,Burggrafenstraße 6, 10787 Berlin, Germany.
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Technical data for Hexagon flange bolts with or without knurled underhead heavy series

This product is regulated by the following standards:

Standard DIN EN 1665

Standard DIN 6921

Hexagon flange bolts with or without knurled underhead heavy series

Suppliers of Hexagon flange bolts with or without knurled underhead heavy series

Company specialized in the production of fasteners and fixings for industrial applications in the following fields: automotive, home appliances, mechanical, components, building industry. Leader in the manufacturing of special fasteners.

Distributor and stockist of standard and special fasteners

Producer of bolts hot forged, threaded bars, threaded studs and U-studs Wholesaler of hexagon bolts, screws, nuts, washers and many other fastener items

Manufacturer of fasteners for critical applications

Manufacturer specialized in self tapping and machine screws. Diameters: M2-M10 Lengths: 4-220 mm

Manufacturer of hexagon head screws, high strength fasteners and flanged screws

Manufacturer of special cold forged screws, socket screws and screws with flange. Size: 3 -16 mm, lengths up to 100 mm . Resistance classes from 4.8 to 12.9.

Dimensions in mm - source DIN 6921 Withdrawn Publication date : 06/1983
d thread size	P	b (l<=125)	b (l>125<=200)	b (l>200)	ds min	c min	dk max.	k max	e min.	s nom=max
M 5	0.8	16	-	-	4.82	1	11.8	5.4	8.71	8
M 6	1	18	-	-	5.82	1.1	14.2	6.6	10.95	10
M 8
M 10
M 12
M 14
M 16
M 20

DIN 6921 1983 - ≈ weigth, in kg x1000 pcs, (ρ=7,85 kg/dm³) - commercial items
d thread size	M5	M6	M8	M10	M12	M14	M16
nominal length l
10	3.22
12	3.46	6.94	13.76	24.04
16	3.94	7.62	15.01	26.01
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
110
120
130
140
150

Hex head flanged screws with knurled underhead Sechskantschrauben mit Flansch mit Rändelschraube Unterkopf Viti a testa esagonale flangiata zigrinata
Dimensions in mm
d thread size	k	h	dk	s	nr. of Teeth
M 5	4.3	0.15	11.2	8	24
M 6
M 8
M 10
M 12
M 16