Nuts, Bolts, Screws Fasteners & Fixings

Security Fasteners and General Fixings from Stock and to order

Click To Make An Enquiry

Call +44(0) 1902 457734

Twitter Icon Facebook Icon LinkedIn Icon Skype Icon

Brass Hexagon Socket Countersunk Screws (DIN 7991)

Brass Hexagon Socket Countersunk Head Screws are made in accordance with DIN 7991 standard or ISO 10462, hosting a hex socket drive that offers increased resistance to cam-out compared to other standard drives e.g. Phillips or slotted.

Fastened into a countersunk hole using a hex wrench or insert bit, these screws are suitable for use with power drivers to enable higher torque and reduce installation time. Once installed, they sit flush within the target housing to offer a clean and aesthetic finish – reducing the likelihood of being snagged or causing injury.

They are widely used across a range of industries, often for vintage mechanical and engineering applications due to their bright gold-like appearance.

Manufactured from Brass as standard. Brass is a rust-proof material providing good corrosion resistance and anti-bacterial properties for exterior use or situations where a self-sterilising fastener is required.

Hex Socket Countersunk Screws are available to order in other materials including A2 Stainless Steel, A4 Stainless Steel, Aluminium and Titanium.

As standard, these Brass Hexagon Socket Countersunk Screws (DIN 7991) are available in thread sizes from M4 to M16, with lengths ranging from 10mm to 90mm. Optional thread locking patches can also be provided.

Non-standard sizes, materials and finishes are available to order as specials, including small volume manufacture, modifications and custom parts made to drawings.
Brass Hexagon Socket Countersunk Screws (DIN 7991) Technical Drawing

Technical Data & Available Sizes
Thread Diameter (d1) M4 M5 M6 M8 M10 M12 M16
d2 max. (mm) 8 10 12 16 20 24 30
l2 (mm) 14 16 18 22 26 30 38
h max. (mm) 2.3 2.8 3.3 4.4 5.5 6.5 7.5
A/F nom. (mm) 2.5 3 4 5 6 8 10
Available Sizes (l1) M4 M5 M6 M8 M10 M12 M16
10mm yellow icon image yellow icon image yellow icon image
12mm yellow icon image yellow icon image yellow icon image yellow icon image
16mm yellow icon image yellow icon image yellow icon image yellow icon image yellow icon image
20mm yellow icon image yellow icon image yellow icon image yellow icon image yellow icon image yellow icon image
25mm yellow icon image yellow icon image yellow icon image yellow icon image yellow icon image yellow icon image
30mm yellow icon image yellow icon image yellow icon image yellow icon image yellow icon image yellow icon image
35mm yellow icon image yellow icon image yellow icon image yellow icon image
40mm yellow icon image yellow icon image yellow icon image yellow icon image yellow icon image yellow icon image
45mm yellow icon image
50mm yellow icon image yellow icon image yellow icon image yellow icon image yellow icon image
55mm yellow icon image
60mm yellow icon image yellow icon image yellow icon image yellow icon image yellow icon image
70mm yellow icon image yellow icon image yellow icon image
80mm yellow icon image yellow icon image yellow icon image
90mm yellow icon image yellow icon image yellow icon image
100mm yellow icon image
yellow icon image = Brass
Size not listed? Please enquire – we may be able to provide it.
Please make full use of our Fastener rotation by left-clicking and dragging to rotate, and using the mouse wheel to zoom in or out.
For display only, visuals may differ.

We use cookies on our website to ensure that we give you the best possible user experience.
If you continue without changing your settings, we'll assume that you are happy to receive all cookies on the Fastenright website. You can read more about removing Cookies here: Privacy Policy

Accept All