M4, M5, M6, Socket Set Screw/ Grub Screw, Plain Cup End, High Tensile/ 14.9, DIN 916, ISO 4029.

M4, M5, M6, Socket Set Screw / Grub Screw, Cup Point, High Tensile (14.9). Here at Fixaball, we stock all sizes, materials and finishes available on the market, at the...

M4, M5, M6, Socket Set Screw / Grub Screw, Cup Point, High Tensile (14.9).

Here at Fixaball, we stock all sizes, materials and finishes available on the market, at the best internet prices, with free delivery.

Orders placed before 2pm are usually dispatched same day (Mon-Fri).

Please make your size and pack quantity selection from the drop down menus.

Socket Set Screw/ Grub Screw Description

A set screw is a type of screw generally used to secure an object within or against another object, normally not using a nut. The most common examples are securing a pulley or gear to a shaft. Set screws are usually headless (also called blind), meaning that the screw is fully threaded and has no head projecting past the major diameter of the screw thread. If a set screw has a head, the thread will extend all the way to the head (whereas a bolt might have an unthreaded shank between the head and thread). A grub screw (blind set screw), is almost always driven with an internal-wrenching drive, such as a hex socket (Allen Key), star (Torx), square socket (Robertson), or slot. The set screw passes through a threaded hole in the outer object and is tightened against the inner object to prevent it from moving relative to the outer object. It exerts a compression or clamping force through the bottom tip that projects through the hole.


Points available NB: not all points are available in all materials

  • Cone Point, Pointed end, this type of point generates the highest torsional holding power and is typically used for a permanent connection. 
  • Cup Point, Hollowed end, is the most commonly used point style. Used when the digging in of the point is not undesirable, leaves a ring mark.
  • Dog Point, Flat end with the threads stopping short of the end with the end fitting into a locating hole. 
  • Flat Point, Cause little damage to the shaft and are used when frequent adjustment is required. 
  • Knurled Up Point, Knurled cup point is a cup point with knurls' cut in the outside of the cup for improved locking.
  • Oval Point, Rounded end that is typically used when frequent adjustment is required. The oval end reduces indentation damage.
  • Thrust Point, Thrust point is a rounded point allows movement at the base of the set screw.
  • Tip, Tips at the end of the set screw are in various materials and are designed to reduce damage.
  • Plunger Point, Set screw containing a spring and ball bearing

Materials Available N.B (Not all types of grub screw are available in all materials)

Material/ Finish


Level of Corrosion Resistance

Typical Application

High Tensile Steel

Self-Colour (black with no surface treatment)

Low, without further surface treatment

-          No exposure to moisture

-          Often Greased/ Oiled

High Tensile Steel - Zinc

Bright Shine – Blue to Yellow


-          Low exposure to moisture

A2 Stainless Steel

Dull Shine


-          Intermittent weathering

-          Hygiene

A4 Stainless Steel

Dull Shine


-          Constant Weathering

-          Chemical exposure

-          Frequent Wear


Shiny, Gold


-          Electrical



Allen Key Sizes

M2 x 0.4mm pitch; allen key size 0.9mm.

M2.5 x 0.45mm pitch; allen key size 1.3mm.

M3 x 0.5mm pitch; allen key size 1.5mm.

M4 x 0.7mm pitch; allen key size 2mm.

M5 x 0.8mm pitch; allen key size 2.5mm.

M6 x 1.0mm pitch; allen key size 3mm.

M8 x 1.25mm pitch; allen key size 4mm.

M10 x 1.5mm pitch; allen key size 5mm.


Image is for illustrative purposes only.

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