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Phillips Pan Head Screw Dimensions (ISO 7045 / DIN 7985, M1.6 to M10)
Guide · Updated October 28, 2026
ISO 7045 covers pan head screws with type H (Phillips) or type Z (Pozidriv) cross recess, M1.6 to M10, product grade A; it replaced DIN 7985. Values agree across the ISO 7045:2011 published table and the Lubker metric pan head datasheet. Nominal values; recess data is type H.
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Step by step
- Find the thread: Pick the row for your thread size, M1.6 to M10.
- Pick the bit: The recess No. column gives the Phillips bit: PH2 for M3.5 to M5, PH3 for M6.
- Check clearance: Use dk and k to check the head clears nearby parts.
- Check the drive type: Type H is Phillips; type Z is Pozidriv. Use the matching bit.
ISO 7045 Phillips pan head screw dimensions (mm)
Columns: thread d, pitch P, head diameter dk max, head height k max, cross recess No., type H recess diameter m (ref.), type H penetration depth min–max, thread length b min.
- Size | P | dk | k | No. | m | pen. | b
- M1.6 | 0.35 | 3.2 | 1.3 | 0 | 1.7 | 0.7–0.95 | 25
- M2 | 0.4 | 4 | 1.6 | 0 | 1.9 | 0.9–1.2 | 25
- M2.5 | 0.45 | 5 | 2.1 | 1 | 2.7 | 1.15–1.55 | 25
- M3 | 0.5 | 5.6 | 2.4 | 1 | 3 | 1.4–1.8 | 25
- (M3.5) | 0.6 | 7 | 2.6 | 2 | 3.9 | 1.4–1.9 | 38
- M4 | 0.7 | 8 | 3.1 | 2 | 4.4 | 1.9–2.4 | 38
- M5 | 0.8 | 9.5 | 3.7 | 2 | 4.9 | 2.4–2.9 | 38
- M6 | 1 | 12 | 4.6 | 3 | 6.9 | 3.1–3.6 | 38
- M8 | 1.25 | 16 | 6 | 4 | 9 | 4–4.6 | 38
- M10 | 1.5 | 20 | 7.5 | 4 | 10.1 | 5.2–5.8 | 38
Worked example: M4 enclosure screw
An M4 ISO 7045 head is 8 mm across and 3.1 mm high, so leave 3.5 mm of clearance above the panel. It takes a PH2 bit; the recess is about 4.4 mm across.
Common problems
- Bit cams out: wrong bit size or a Pozidriv bit in a Phillips recess; check the recess No. and type.
- Recess strips in stainless: too little end pressure or a worn bit; push hard and use a fresh PH bit.
- Head too tall for the gap: Phillips pan heads are taller than slotted pan heads; check k.
FAQ
Is DIN 7985 the same as ISO 7045?
Close but not identical. ISO 7045 replaced DIN 7985. DIN 7985 has a larger head at M3 (dk 6 vs 5.6) and M5 (10 vs 9.5), and uses a No. 1 recess at M2.
Phillips or slotted pan head?
ISO 7045 pan heads are taller than ISO 1580 slotted pan heads (M4: k 3.1 vs 2.4) but have the same head diameter.
What is penetration?
How deep a gauge sinks into the recess. The range is for type H (Phillips).
Can I use a Pozidriv bit?
Only on type Z screws. A PZ bit in a PH recess cams out and damages it.
Related guides and calculators
- Phillips countersunk screws (ISO 7046)
- Slotted pan head screws (ISO 1580)
- Slotted countersunk screws (ISO 2009)
- Button head screws (ISO 7380)
- All free machinist calculators
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