Countersunk Socket Head Screw

DIN 7991 (Historical)Corresponding standard: ISO 10642

Material: Carbon Steel, Alloy Steel, Stainless Steel
Property Class: 8.8, 10.9, 12.9, A2-70 and more
Finish: Zinc Plated, Dacromet, Blackened, Phosphate and more
Size range: M3–M20

Select sizes and quantities — 97 confirmed sizes to DIN 7991

Material

Grade

Carbon SteelAlloy SteelStainless Steel

Finish

Find a size

dNominal Diameter (mm)	lLength (mm)	PThread Pitch (mm)	sHex Socket Size (mm)	dkHead Diameter (mm)	kNominal Head Height (mm)	MOQ
M3	6	0.5	2	6	1.7	2000
M3	8	0.5	2	6	1.7	2000
M3	10	0.5	2	6	1.7	2000
M3	12	0.5	2	6	1.7	2000
M3	16	0.5	2	6	1.7	2000
M3	20	0.5	2	6	1.7	2000
M3	25	0.5	2	6	1.7	2000
M3	30	0.5	2	6	1.7	2000
M3	35	0.5	2	6	1.7	2000
M3	40	0.5	2	6	1.7	2000
M3	45	0.5	2	6	1.7	2000
M3	50	0.5	2	6	1.7	2000
M4	6	0.7	2.5	8	2.3	2000
M4	8	0.7	2.5	8	2.3	2000
M4	10	0.7	2.5	8	2.3	2000
M4	12	0.7	2.5	8	2.3	2000

Showing 16 of 97 sizes

M3 × 6 × 0.5 × 2 × 6 × 1.7

dNominal Diameter (mm)M3

lLength (mm)6

PThread Pitch (mm)0.5

sHex Socket Size (mm)2

dkHead Diameter (mm)6

kNominal Head Height (mm)1.7

MOQ2000

M3 × 8 × 0.5 × 2 × 6 × 1.7

dNominal Diameter (mm)M3

lLength (mm)8

PThread Pitch (mm)0.5

sHex Socket Size (mm)2

dkHead Diameter (mm)6

kNominal Head Height (mm)1.7

MOQ2000

M3 × 10 × 0.5 × 2 × 6 × 1.7

dNominal Diameter (mm)M3

lLength (mm)10

PThread Pitch (mm)0.5

sHex Socket Size (mm)2

dkHead Diameter (mm)6

kNominal Head Height (mm)1.7

MOQ2000

M3 × 12 × 0.5 × 2 × 6 × 1.7

dNominal Diameter (mm)M3

lLength (mm)12

PThread Pitch (mm)0.5

sHex Socket Size (mm)2

dkHead Diameter (mm)6

kNominal Head Height (mm)1.7

MOQ2000

M3 × 16 × 0.5 × 2 × 6 × 1.7

dNominal Diameter (mm)M3

lLength (mm)16

PThread Pitch (mm)0.5

sHex Socket Size (mm)2

dkHead Diameter (mm)6

kNominal Head Height (mm)1.7

MOQ2000

M3 × 20 × 0.5 × 2 × 6 × 1.7

dNominal Diameter (mm)M3

lLength (mm)20

PThread Pitch (mm)0.5

sHex Socket Size (mm)2

dkHead Diameter (mm)6

kNominal Head Height (mm)1.7

MOQ2000

M3 × 25 × 0.5 × 2 × 6 × 1.7

dNominal Diameter (mm)M3

lLength (mm)25

PThread Pitch (mm)0.5

sHex Socket Size (mm)2

dkHead Diameter (mm)6

kNominal Head Height (mm)1.7

MOQ2000

M3 × 30 × 0.5 × 2 × 6 × 1.7

dNominal Diameter (mm)M3

lLength (mm)30

PThread Pitch (mm)0.5

sHex Socket Size (mm)2

dkHead Diameter (mm)6

kNominal Head Height (mm)1.7

MOQ2000

M3 × 35 × 0.5 × 2 × 6 × 1.7

dNominal Diameter (mm)M3

lLength (mm)35

PThread Pitch (mm)0.5

sHex Socket Size (mm)2

dkHead Diameter (mm)6

kNominal Head Height (mm)1.7

MOQ2000

M3 × 40 × 0.5 × 2 × 6 × 1.7

dNominal Diameter (mm)M3

lLength (mm)40

PThread Pitch (mm)0.5

sHex Socket Size (mm)2

dkHead Diameter (mm)6

kNominal Head Height (mm)1.7

MOQ2000

M3 × 45 × 0.5 × 2 × 6 × 1.7

dNominal Diameter (mm)M3

lLength (mm)45

PThread Pitch (mm)0.5

sHex Socket Size (mm)2

dkHead Diameter (mm)6

kNominal Head Height (mm)1.7

MOQ2000

M3 × 50 × 0.5 × 2 × 6 × 1.7

dNominal Diameter (mm)M3

lLength (mm)50

PThread Pitch (mm)0.5

sHex Socket Size (mm)2

dkHead Diameter (mm)6

kNominal Head Height (mm)1.7

MOQ2000

M4 × 6 × 0.7 × 2.5 × 8 × 2.3

dNominal Diameter (mm)M4

lLength (mm)6

PThread Pitch (mm)0.7

sHex Socket Size (mm)2.5

dkHead Diameter (mm)8

kNominal Head Height (mm)2.3

MOQ2000

M4 × 8 × 0.7 × 2.5 × 8 × 2.3

dNominal Diameter (mm)M4

lLength (mm)8

PThread Pitch (mm)0.7

sHex Socket Size (mm)2.5

dkHead Diameter (mm)8

kNominal Head Height (mm)2.3

MOQ2000

M4 × 10 × 0.7 × 2.5 × 8 × 2.3

dNominal Diameter (mm)M4

lLength (mm)10

PThread Pitch (mm)0.7

sHex Socket Size (mm)2.5

dkHead Diameter (mm)8

kNominal Head Height (mm)2.3

MOQ2000

M4 × 12 × 0.7 × 2.5 × 8 × 2.3

dNominal Diameter (mm)M4

lLength (mm)12

PThread Pitch (mm)0.7

sHex Socket Size (mm)2.5

dkHead Diameter (mm)8

kNominal Head Height (mm)2.3

MOQ2000

Product details

Description: This hexagon socket countersunk head screw is manufactured to DIN 7991. It features a countersunk head and hexagon socket drive. Available in carbon steel, alloy steel, and stainless steel, with property classes 8.8, 10.9, 12.9, A2-70, and A4-80. Surface finishes include zinc plated, blackened, phosphate, plain, and passivated; Dacromet is also offered for M5 sizes. When requesting a quotation, specify diameter, length, material, grade, and finish.
Features: Conical head sits flush with the surface · Internal hexagon socket drive · No head protrusion above the joint face · Available in M3–M12 · Carbon Steel, Alloy Steel and more options
Applications: Joints requiring a flush surface, Machine covers and panels, Mould and die assembly, Automation equipment

Order assurance

Confirmed for the quoted product and order.

Reports & inspection

Agreed in the quotation.

EN 10204 3.1 material certificate
Dimensional inspection report
Certificate of conformity
Mechanical test report
Chemical analysis report
Coating inspection report
Batch and lot traceability

Packaging & delivery

Options we supply.

Bulk carton packing
Small boxes with outer cartons
Palletized shipment
Fumigation-free pallets
Inner poly bags
Buyer branding and labels

Product questions

What sizes of Countersunk Socket Head Screw do you supply?

Execution standard: DIN 7991. The confirmed specification table covers M3–M20 diameters and 6–80 lengths. Use the specification table to select the exact variant required for quotation.

Which materials, grades and finishes can I order?

Material: Carbon Steel, Alloy Steel, Stainless Steel; Property class: 8.8, 10.9, 12.9, A2-70, A4-80; Finish: Zinc Plated, Dacromet, Blackened, Phosphate, Plain, Passivated. Availability should be confirmed against the selected specification and order quantity.

Can I order DIN 7991 against an ISO 10642 drawing?

ISO 10642 is the corresponding standard recorded for DIN 7991 in the TAURUS standard library. Send the drawing with your enquiry: the execution standard is confirmed line by line on the quotation, and any dimension that differs between the two tables is pointed out before the order.