DIN 7991
similar to ISO 10642

Countersunk bolts

hexagon socket
Material: Steel 8.8 | Surface: bright | Flange/washer: without flange | Thread type: Metric thread | Head shape: Countersunk head | Force application: Hexagon socket | Material: Steel 8.8 | Installation method: Screw into place with tool | Surface: bright | Product group: Screws
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Diameter (d)
M3
M4
M5
M6
M8
M10
M12
M16
M20
Length (l)
8
10
12
14
16
20
25
30
35
40
45
50
55
60
70
80
Packaging unit (pcs.)
25
50
100
200
500
1000
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Art.no.: 79918.81016
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similar to ISO 10642 | DIN standard has been withdrawn
Art.no.: 79918.81016
DIN 7991 | steel | 8.8 | bright | Cr(VI) - free | metric thread | can be delivered with partial thread or full thread

Note: Similar to ISO 10642 | DIN-standard has been withdrawn | the head height and head diameter have been partly changed | due to the head geometry, these screws have only a limited load bearing capacity, see DIN EN ISO 898-1
b l up to 125:
26
b l up to 200:
32
b l longer than 200:
45
Diameter (d):
M10
da max.:
11,2
dk max.:
20
dk min.:
19,48
ds max.:
10
ds min.:
9,78
e min.:
6,86
ECLASS 7.1:
23110103
k max.:
5,5
Length (l):
16
l max. A:
16,35
l min. A:
15,65
Material:
Steel 8.8
DIN/ISO:
DIN 7991
Surface:
bright
Pitch (P):
1,5
r min.:
0,4
s:
6
s max.:
6,14
s min.:
6,02
t max.:
4,4
t min.:
4,1
Packaging unit (pcs.):
200
Tool size:
SW 6
Material version:
8.8
Cr(VI) Note:
Cr(VI)-free
Flange/washer:
without flange
Risk hydrogen embrittlement:
Thread type:
Metric thread
Head shape:
Countersunk head
Force application:
Hexagon socket
Installation method:
Screw into place with tool
Product type:
Cap screw with internal driving feature
Product group:
Screws
RoHS conformal:
Material:
Steel
The Manual of fastening Technology: 8th edition
PDF
ENG
8100/23-V1-EN (WBH)
Fastening and assembly technology: Products and services
PDF
ENG
1180/21-V1-EN (WBH)
Data sheet: Technical information and dimensions of the product
PDF
ENG
02/2024
Böllhoff bulletin: Changeover to Cr6+-free protective zinc layers for fasteners
PDF
ENG
1622/15.02