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Pozi Thread Rolling Screws with Countersunk Head, typically to DIN 965 (Form M) / ISO 7046 (Form ME), host the addition of four “wings” on the cross-shaped drive design. They host improved torque and better drive engagement with Pozi drive bits.
These components feature a trilobular or three-lobe thread design. During installation, they form their own thread, with the excess material being pushed into the relief areas of the screw – increasing screw retention and vibration resistance.
Thread Rolling Screws are often used within sheet metals and can be driven into a pilot hole without the need for thread tapping as a separate process. They also prevent loose chips caused by other thread cutting processes.
The countersunk head allows the screw to sit flush when installed in a countersink for a clean, aesthetic finish.
DIN 965 Pozi Countersunk Thread Rolling screws are typically made from A2 / 304 Stainless Steel, Steel Zinc Plated and Steel Black Plated.
Available at Fastenright in thread sizes M2.5 to M8, with lengths up to 50mm. Imperial UNC / UNF threads can also be supplied.
Non-standard sizes, materials and finishes are available to order as specials, including small volume manufacture, modifications and bespoke parts made to drawings. Minimum order quantities apply.
Our full range of Thread Rolling Screws can be found here.
| Form M DIN 965 Technical Data & Availability | |||||||||||||||
| Thread Diameter (d1) |
M2.5 | M3 | M3.5 | M4 | M5 | M6 | M8 | ||||||||
| d2 (mm) | 4.7 | 5.6 | 6.5 | 7.5 | 9.2 | 11 | 14.5 | ||||||||
| k (mm) | 1.5 | 1.65 | 1.93 | 2.2 | 2.5 | 3 | 4 | ||||||||
| Recess | 1 | 1 | 2 | 2 | 2 | 3 | 4 | ||||||||
| Available Lengths (L) |
M2.5 | M3 | M3.5 | M4 | M5 | M6 | M8 | ||||||||
| 5mm |    |
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| 8mm | |
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| 10mm | |
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| 12mm | |
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| 16mm | |
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| 20mm | |
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| 25mm | |
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| 30mm | |
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| 35mm | |
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| 40mm | |
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| 45mm | |
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| 50mm | |
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| = A2 Stainless Steel // = Steel Zinc Plated // = Steel Black Plated (may have increased lead times) Size not listed? Please make an enquiry – we may be able to provide it. |
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| Form ME ISO 7046-2 Technical Data & Availability | |||||||||||||||
| Thread Diameter (d1) |
M3 | M4 | M5 | M6 | |||||||||||
| d2 max. (mm) | 5.5 | 8.4 | 9.3 | 11.3 | |||||||||||
| k (mm) | 1.65 | 2.7 | 2.7 | 3.3 | |||||||||||
| Recess | 1 | 2 | 2 | 3 | |||||||||||
| Available Lengths (L) |
M3 | M4 | M5 | M6 | |||||||||||
| 6mm | |
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| 8mm | |
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| 10mm | |
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| 12mm | |
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| 16mm | |
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| 20mm | |
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| 25mm | |
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| 30mm | |
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| 35mm | |
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| = Steel Zinc Plated // = Steel Black Plated (may have increased lead times) Size not listed? Please make an enquiry – we may be able to provide it. |
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| 1/4″ | |
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| 5/16″ | |
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| 3/8″ | |
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| 1/2″ | |
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| 3/4″ | |
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| 1″ | |
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| 1. 3/4″ | |
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| 2″ | |
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| 2. 1/4″ | |
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| 2. 1/2″ | |
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| = Steel Zinc Plated // = Steel Black Plated (may have increased lead times) Size not listed? Please make an enquiry – we may be able to provide it. |
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