Thread-Cutting (Type 23/25, DIN 7513/7516) self-tapping screws
thread-cutting (machine pitch)
6 documented uses, taken from manufacturer catalogs, service manuals and teardowns.
Pilot hole
3.3-3.5 mm for M4/6-32 in die-cast zinc
Too tight and the head snaps or the boss splits; too loose and the thread strips on the first removal.
Buy Thread-Cutting (Type 23/25, DIN 7513/7516) self-tapping screws
Affiliate links — they cost you nothing extra and keep this database free.
Watch out for
- Type 23 has a wide cutting slot for chip removal; Type 25 has wider thread spacing for plastics.
- Most TV, appliance, HVAC and power-tool service documents list only a driver type or a part number, never a thread size - so a screw kit sold as 'fits brand X' is usually a seller's guess, not an OEM spec. Measure the old screw before buying.
Where Thread-Cutting (Type 23/25, DIN 7513/7516) is used
Alliance Commercial Dryers
Securing electrical control panel to main chassis
M4 x 12 · confirmed · electrical enclosures
View sourceHotpoint Washing Machine
Securing the manifold assembly to the tub
M4 x 16 · confirmed · whitegoods
View sourceKanebridge Type 23 Screw
Thread-cutting into aluminum die castings for electronics
6-32 x 1/2" · confirmed · electronics
View sourceEisen Electric Plastic Parts
Thread-cutting into hard plastic bosses (Type 25)
4-40 x 3/8" · confirmed · whitegoods
View sourceCVT Civata DIN 7513
Securing automotive engine covers and motor casings
M5 x 25 · confirmed · car interior trim
View sourceNewport Fasteners Type 23
Zinc die-cast assembly for electrical switchgear
8-32 x 5/8" · confirmed · electrical enclosures
View source