DIN 7991Countersunk head bolt

Analogs DIN 7991:

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DIN 7991 10,9 Countersunk head bolt and hexagon socket

DIN 7991 10,9 Countersunk head bolt and hexagon socket

DIN 7991 10,9 Countersunk head bolt and hexagon socket Fastening groupHigh-strength..StandardDIN 7991MaterialStalStrength class10.9CoatingUncoveredDiameter, mm2, 2.5, 3, 4, 5..Length, mm3, 5, 6, 8, 10..HeadHiddenPackaging, pcs.500, 200, 1000..Type of carvingFull, PartiallySlotHexagonal..Thread typeMetricThreading step, mm0.4, 0.45, 0.5..Turnkey size, mm1.3, 1.5, 2, 2.5..Thread length70AnalogISO 10642OEM numbers236303 Claas, 216308..

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DIN 7991 10,9 zinc plated black countersunk head Bolt under torx

DIN 7991 10,9 zinc plated black countersunk head Bolt under torx

DIN 7991 10,9 zinc plated black countersunk head Bolt under torx Fastening groupHigh-strength..StandardDIN 7991MaterialStalStrength class10.9CoatingFlake..Diameter, mm6, 8, 10Length, mm12, 16, 20, 25..HeadHiddenPackaging, pcs.500, 200Type of carvingPartiallySlotStar-shaped..Thread typeMetricThreading step, mm1, 1.25, 1.5Turnkey size, mm30, 40, 50AnalogISO 10642

New

DIN 7991 8,8 zinc countersunk head Bolt under torx

DIN 7991 8,8 zinc countersunk head Bolt under torx

DIN 7991 8,8 zinc countersunk head Bolt under torx Fastening groupHigh-strength..StandardDIN 7991MaterialStalStrength class8.8CoatingZincDiameter, mm4, 5, 6, 8Length, mm8, 10, 12, 16, 20..HeadHiddenType of carvingPartiallySlotStar-shaped..Thread typeMetricThreading step, mm0.7, 0.8..Turnkey size, mm20, 25, 30, 40AnalogISO 10642

New

DIN 7991 10,9 zinc countersunk head Bolt and hexagon socket

DIN 7991 10,9 zinc countersunk head Bolt and hexagon socket

DIN 7991 10,9 zinc countersunk head Bolt and hexagon socket Fastening groupHigh-strength..StandardDIN 7991MaterialStalStrength class10.9CoatingZincDiameter, mm3, 4, 5, 6, 8, 10..Length, mm5, 6, 8, 10, 12..HeadHiddenPackaging, pcs.500, 200, 1000..Type of carvingFull, PartiallySlotHexagonal..Thread typeMetricThreading step, mm0.5, 0.7, 0.8, 1..Turnkey size, mm2, 2.5, 3, 4, 5..AnalogISO 10642OEM numbers236303 Claas, 216308..

New

DIN 7991 A2 countersunk head Bolt under torx

DIN 7991 A2 countersunk head Bolt under torx Fastening groupStainless steel..StandardDIN 7991MaterialStainless steel..Diameter, mm2.5, 3, 4, 5, 6..Length, mm6, 8, 10, 12, 14..HeadHiddenPackaging, pcs.500, 200, 1000..Type of carvingPartiallySlotStar-shaped..Thread typeMetricThreading step, mm0.35, 0.45, 0.7..Turnkey size, mm10, 20, 25, 30..AnalogISO 10642

New

DIN 7991 A2 countersunk head Bolt and hexagon socket

DIN 7991 A2 countersunk head Bolt and hexagon socket Fastening groupStainless steel..StandardDIN 7991MaterialStainless steel..Diameter, mm2, 2.5, 3, 4, 5..Length, mm3, 4, 5, 6, 8, 10..HeadHiddenPackaging, pcs.500, 200, 1000..Type of carvingFull, PartiallySlotHexagonal..Field of applicationMilitary industry..Thread typeMetricThreading step, mm0.4, 0.45, 0.5..Turnkey size, mm1.5, 2, 2.5, 3..AnalogISO 10642

New

DIN 7991 A4 countersunk head Bolt under torx

DIN 7991 A4 countersunk head Bolt under torx Fastening groupStainless steel..StandardDIN 7991MaterialStainless steel..Diameter, mm4, 5, 6, 8, 10..Length, mm10, 12, 16, 20..HeadHiddenPackaging, pcs.500, 200, 1000..Type of carvingPartiallySlotStar-shaped..Thread typeMetricThreading step, mm0.7, 0.8, 1, 1.25..Turnkey size, mm20, 25, 30, 40..AnalogISO 10642

New

DIN 7991 A4 countersunk head Bolt and hexagon socket

DIN 7991 A4 countersunk head Bolt and hexagon socket Fastening groupStainless steel..StandardDIN 7991MaterialStainless steel..Diameter, mm2, 2.5, 3, 4, 5..Length, mm3, 4, 5, 6, 8, 10..HeadHiddenPackaging, pcs.500, 200, 1000..Type of carvingPartiallySlotHexagonal..Thread typeMetricThreading step, mm0.4, 0.45, 0.5..Turnkey size, mm2, 2.5, 3, 4, 5..AnalogISO 10642

New

DIN 7991 8,8 zinc countersunk head Bolt and hexagon socket

DIN 7991 8,8 zinc countersunk head Bolt and hexagon socket

DIN 7991 8,8 zinc countersunk head Bolt and hexagon socket Fastening groupHigh-strength..StandardDIN 7991MaterialStalStrength class8.8CoatingZincDiameter, mm3, 4, 5, 6, 8, 10..Length, mm5, 6, 8, 10, 12..HeadHiddenPackaging, pcs.500, 200, 100, 25..Type of carvingFull, PartiallySlotHexagonal..Thread typeMetricThreading step, mm0.5, 0.7, 0.8, 1..Turnkey size, mm2, 2.5, 3, 4, 5..AnalogISO 10642OEM numbers236303 Claas, 216308..

New

DIN 7991 8,8 Countersunk head bolt and hexagon socket

DIN 7991 8,8 Countersunk head bolt and hexagon socket

DIN 7991 8,8 Countersunk head bolt and hexagon socket Fastening groupHigh-strength..StandardDIN 7991MaterialStalStrength class8.8CoatingUncoveredDiameter, mm3, 4, 5, 6, 8, 10..Length, mm5, 6, 8, 10, 12..HeadHiddenPackaging, pcs.500, 200, 100, 25..Type of carvingFullSlotHexagonal..Thread typeMetricThreading step, mm0.5, 0.7, 0.8, 1..Turnkey size, mm2, 2.5, 3, 4, 5..AnalogISO 10642OEM numbers236303 Claas, 216308..

New

DIN 7991 10,9 zinc yellow countersunk head Bolt and hexagon socket

DIN 7991 10,9 zinc yellow countersunk head Bolt and hexagon socket

DIN 7991 10,9 zinc yellow countersunk head Bolt and hexagon socket Fastening groupHigh-strength..StandardDIN 7991MaterialStalStrength class8.8CoatingYellow zinkDiameter, mm4, 5, 6, 8, 10..Length, mm10, 12, 16, 20..HeadHiddenType of carvingFullSlotHexagonal..Thread typeMetricThreading step, mm0.7, 0.8, 1, 1.25..Turnkey size, mm2.5, 3, 4, 5, 6..AnalogISO 10642

New

DIN 7991 10,9 zinc plated countersunk head Bolt and hexagon socket

DIN 7991 10,9 zinc plated countersunk head Bolt and hexagon socket

DIN 7991 10,9 zinc plated countersunk head Bolt and hexagon socket Fastening groupHigh-strength..StandardDIN 7991MaterialStalStrength class10.9CoatingFlake zinkDiameter, mm5, 6, 8, 10, 12..Length, mm10, 12, 16, 20..HeadHiddenPackaging, pcs.500, 200, 100, 25..Type of carvingFull, PartiallySlotHexagonal..Thread typeMetricThreading step, mm0.8, 1, 1.25, 1.5..Turnkey size, mm3, 4, 5, 6, 8, 10..AnalogISO 10642

New

DIN 7991 10,9 zinc plated black countersunk head Bolt and hexagon socket

DIN 7991 10,9 zinc plated black countersunk head Bolt and hexagon socket

DIN 7991 10,9 zinc plated black countersunk head Bolt and hexagon socket Fastening groupHigh-strength..StandardDIN 7991MaterialStalStrength class10.9CoatingFlake..Diameter, mm5, 6, 8Length, mm8, 10, 12, 14, 16..HeadHiddenPackaging, pcs.500, 200Type of carvingFullSlotHexagonal..Thread typeMetricThreading step, mm0.8, 1Turnkey size, mm3, 4AnalogISO 10642

New

DIN 7991 12,9 Countersunk head bolt and hexagon socket

DIN 7991 12,9 Countersunk head bolt and hexagon socket

DIN 7991 12,9 Countersunk head bolt and hexagon socket Fastening groupHigh-strength..StandardDIN 7991MaterialStalStrength class12.9CoatingUncoveredDiameter, mm4, 5, 6, 8, 10Length, mm10, 16, 20, 25..HeadHiddenPackaging, pcs.500, 200Type of carvingFullSlotHexagonal..Thread typeMetricThreading step, mm0.7, 0.8, 1, 1.25..Turnkey size, mm2.5, 3, 4, 5, 6AnalogISO 10642OEM numbers216308 Claas, 211308..

Technical characteristics DIN 7991

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Specifications DIN 7991Countersunk head bolt | Dinmark>

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Specifications

Fastening group

High-strength fastening

Standard

DIN 7991

Material

Stal

Strength class

12.9

Coating

Uncovered

Diameter, mm

2 2.5 3 4 5 6 8 10 12 14 16 18 20 22 24

Length, mm

3 4 5 6 8 10 12 14 16 18 20 22 25 30 35 40 45 50 55 60 65 70 75 80 90 100 110 120 130 140 150 160 170 180 190 200 220 240

Head

Hidden

Packaging, pcs.

500 200 100 25 50 10 5

Type of carving

Full Partially

Slot

Hexagonal (INBUS)

Thread type

Metric

Threading step, mm

0.35 0.4 0.45 0.5 0.7 0.8 1 1.25 1.5 1.75 2 2.5 3

Turnkey size, mm

1.3 1.5 2 2.5 3 4 5 6 8 10 12 14 17 18 20 25 30 40 50 55

Analog

ISO 10642

OEM numbers

216308 Claas 211308 Claas 213699 Claas 237069 Claas 237062 Claas 237577 Claas 212118 Claas 3016124 Lemken 214351 Claas 237068 Claas 214002 Claas 237828 Claas 237061 Claas 233945 Claas 215147 Claas 214027 Claas 215146 Claas 237768 Claas 216185 Claas 211175 Claas 237579 Claas

Thread length

Field of application

Military industry Construction

A din 7991 screw is a fastener that has a countersunk cone-shaped head with a slot for an internal hexagon or Torx and a rod with a fully metric thread. With this design, the bolt head is fully included in the plane in which it is fixed, and the slot allows for maximum tightening force without the risk of slot breakage.

Strength class DIN 7991

The strength class is the maximum applied force at which the bolt begins to fracture. DIN 7991 bolts are manufactured in various sizes from high-strength structural alloy steel with a strength class of 8.8 to 10.9, and are used for critical projects where, in addition to high loads and static loads, they are subject to high stress.

Fastening group DIN 7991

Depending on the material of manufacture, the bolt is divided into different fastening groups:

High-strength fasteners
Stainless steel fasteners
Materials of manufacture

Materials of manufacture

The bolt is available in the following materials:

Steel, which can optionally be coated with plain and plate black zinc
Stainless steel (A2, A4) does not need to be coated

Where high strength bolts DIN 7991 are used

The din 7991 bolt has a slot that allows the use of pneumatic and power tools to install them quickly and easily. As a result, they are often used in conveyor assembly as flush-mounted fasteners for flush mounting. They are used to fasten parts in structures with high safety and aesthetic requirements. They are mainly used in the manufacturing, industrial and construction industries.

In addition, the scope of application directly depends on the material of manufacture and coating of the product:

Galvanized steel offers good corrosion protection if the fastener is to be used in aggressive environments.
Stainless steel allows the fasteners to be used at high temperature extremes and in aggressive and humid environments.

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