Brass Socket Set Screws
| Thread | d | SW (hex key) | t (socket depth) | l range |
|---|---|---|---|---|
| M3 | 3.0 | 1.5 | 1.2 | 3 – 16 |
| M4 | 4.0 | 2.0 | 1.5 | 4 – 20 |
| M5 | 5.0 | 2.5 | 2.0 | 5 – 25 |
| M6 | 6.0 | 3.0 | 2.5 | 6 – 30 |
| M8 | 8.0 | 4.0 | 3.0 | 8 – 40 |
| M10 | 10.0 | 5.0 | 4.0 | 10 – 50 |
| M12 | 12.0 | 6.0 | 4.8 | 12 – 60 |
| M16 | 16.0 | 8.0 | 6.4 | 16 – 80 |
| Thread | dk (cup Ø) | tk (cup depth) |
|---|---|---|
| M3 | 1.2 | 0.8 |
| M4 | 1.6 | 1.0 |
| M5 | 2.0 | 1.25 |
| M6 | 2.5 | 1.5 |
| M8 | 3.5 | 2.0 |
| M10 | 4.0 | 2.5 |
| M12 | 5.0 | 3.0 |
| M16 | 6.0 | 4.0 |
Flat point (DIN 913 / ISO 4026) bears on the surface without marking it — best for frequent adjustment. Cone point (DIN 914 / ISO 4027) digs in for permanent location. Dog point (DIN 915 / ISO 4028) engages a drilled hole or slot for positive positioning. Cup point (DIN 916 / ISO 4029) is the general-purpose choice, biting lightly into the shaft for good holding without a prepared seat.
Standard coverage runs M2 to M16 ISO metric and #4-40 to ¾-10 UNC, with hex socket drive on the DIN 913–916 series and slotted drive on DIN 551, 553 and 438. Custom lengths and points are made to drawing.
Brass set screws are non-magnetic, corrosion resistant and non-sparking, and they won’t gall stainless shafts or mar softer mating parts the way hardened steel can. They suit electrical, instrumentation and marine-adjacent applications where steel fasteners corrode or interfere.
Set screws are machined from CW617N brass, RoHS compliant, with nickel or tin plating available on request. All production is made to order — share your DIN type, thread size and length for pricing within one business day.