RS PRO Black, Self-Colour Steel Hex Socket Countersunk Screw, DIN 7991, M16 x 50mm
- RS Stock No.:
- 193-3424
- Brand:
- RS PRO
Subtotal (1 bag of 25 units)*
£15.68
(exc. VAT)
£18.82
(inc. VAT)
FREE delivery for orders over £50.00
In Stock
- Plus 4 unit(s) shipping from 27 October 2025
- Plus 8 unit(s) shipping from 17 December 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Bag(s) | Per Bag | Per unit* |
|---|---|---|
| 1 + | £15.68 | £0.627 |
*price indicative
- RS Stock No.:
- 193-3424
- Brand:
- RS PRO
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | RS PRO | |
| Imperial or Metric | Metric | |
| Thread Size | M16 | |
| Length | 50mm | |
| Head Shape | Hex Socket Countersunk | |
| Material | Steel | |
| Finish | Black, Self-Colour | |
| Thread Type | Metric | |
| Thread Pitch | 2mm | |
| Standards Met | DIN 7991 | |
Select all | ||
|---|---|---|
Brand RS PRO | ||
Imperial or Metric Metric | ||
Thread Size M16 | ||
Length 50mm | ||
Head Shape Hex Socket Countersunk | ||
Material Steel | ||
Finish Black, Self-Colour | ||
Thread Type Metric | ||
Thread Pitch 2mm | ||
Standards Met DIN 7991 | ||
RS PRO Metric Countersunk Hexagon Steel Screw
RS PRO hexagon socket countersunk screws are an excellent choice when you need a fastener to sit flush or below the surface of your material.
These popular metric thread countersunk screws are produced in 10.9 grade steel and are designed for light duty applications where space is limited. These fasteners have a black finish which ensures an attractive, quality appearance and finish wherever they are used.
These screws fasteners can be tightened or undone using an Allen key.
These popular metric thread countersunk screws are produced in 10.9 grade steel and are designed for light duty applications where space is limited. These fasteners have a black finish which ensures an attractive, quality appearance and finish wherever they are used.
These screws fasteners can be tightened or undone using an Allen key.
Features and Benefits:
Various thread sizes available, including M3, M4, M5, M6, M8 and M16
Countersunk – the head does not stick out so that nothing can hit it and interfere with the operation of the application
Also used in many internal joinery applications
Have the marking on the head
More resilient than 8.8 grade
Nominal strength of 1040 N/mm²
Yield strength of 940 N/mm²
Requires a Hex key / Allen key
Countersunk – the head does not stick out so that nothing can hit it and interfere with the operation of the application
Also used in many internal joinery applications
Have the marking on the head
More resilient than 8.8 grade
Nominal strength of 1040 N/mm²
Yield strength of 940 N/mm²
Requires a Hex key / Allen key
Typical Applications:
Although uses may vary, as standard, these screws are fasteners for industrial equipment or machines which requires parts to be fixed onto a surface or together. The socket will need to be the same metric thread as the screw itself. As an example, some of the types of uses would be:
Woodworking
Domestic applications
Fasteners and fixings
Machine tooling and repair
Security guarding
Panel Building
Electronic applications
Automotive industry
Medical applications
Facilities and maintenance applications
Woodworking
Domestic applications
Fasteners and fixings
Machine tooling and repair
Security guarding
Panel Building
Electronic applications
Automotive industry
Medical applications
Facilities and maintenance applications
FAQs
What is a socket screw?
Socket screws are defined by their name. They are a type of threaded bolt which screws into the intended socket. There are various thread sizes and lengths and can be used for both industrial and personal purposes. Good quality and reliable RS PRO socket screws ensures the fixing will remain strong and stable, whatever the application.
Note
Requires a Hex key
We offer a range of hexagon countersunk socket screws in black self-coloured steel, available in various thread sizes and lengths. Refer to the Datasheet and Range Overview download file for details.
If black oxide self-coloured steel is not what you are looking for we also offer steel hexagon countersunk socket screws with a BZP finish or alternatively A2 (306) and A4 (316) stainless steel.
We offer a range of hexagon countersunk socket screws in black self-coloured steel, available in various thread sizes and lengths. Refer to the Datasheet and Range Overview download file for details.
If black oxide self-coloured steel is not what you are looking for we also offer steel hexagon countersunk socket screws with a BZP finish or alternatively A2 (306) and A4 (316) stainless steel.
Standards
Threaded in accordance with DIN 7991
M16X50 CSK SOCKET SCREW PLAIN (25)