ISO 7047 Raised Countersunk Head Screws (H / Z Cross Recess)
ISO 7047 raised countersunk (oval) head screws with H or Z cross recess, M1.6 to M10 — the countersunk head that may sit slightly proud with a domed crown — with the full collected 10-size table: head-cone geometry, the f and R crown dimensions, socket numbers and penetration-depth bands.
Last updated: 2026-11
Specifications
ISO 7047 is the raised countersunk — oval — head screw: it seats in the same 90-degree countersink as the flat-head versions, but the head is not truncated flush. Above the cone sits a shallow dome whose crown radius R and crown height f lift a smooth curved cap fractionally proud of the surface. The collected page maps the designation to DIN 966, and the pair solves the problem flat countersunk heads leave behind: in thin sheet a countersink barely has material to cone into, so the raised crown keeps a clean-looking, snag-safe head where a flat top would cut into the surface or leave a sharp rim. The crown also gives a soft lead-in for moving parts passing over the head. Driven like its flat-head sibling, the head carries an H (Phillips-type) or Z (Pozidriv-type) cross recess, and the table prints for each size the Socket No., the M 1 driving dimension (Ref.) and the penetration depth min/max band for both recess types — production tooling must hold the band to avoid bottoming or cam-out. The remaining columns: pitch P, a runout, theoretical and actual d k with max=nominal / min limits, head height k, r fillet, x thread-end lash and the thread length b ladder (15 to 40 mm). Materials, property classes and finishes are not printed by the collected specification and follow the drawing callout.
| Standard | ISO 7047 — raised countersunk head screws with H (Phillips-type) or Z (Pozidriv-type) cross recess (collected page notes it replaces DIN 966) |
|---|---|
| Series | M1.6 – M10 (10 sizes across three block tables) |
| Tabulated geometry | Per size: pitch P, runout a max, head diameter d k theoretical max and actual (max=nominal / min), crown height f, crown radius R, head height k, fillet r max, thread-end lash x max, Socket No., M 1 driving dimension (Ref.) and penetration depth min/max per recess type, thread length b |
| Dimensions at M3 | d k theoretical max 6.3 / actual max=nominal 5.5 / min 5.2; k max=nominal 1.65; f 0.7; R approx. 6; Socket No. 1; Type H: M 1 ref. 3.4, penetration depth max 2.2 / min 1.8; Type Z: M 1 ref. 3.1, penetration depth max 2.08 / min 1.83; b 19 |
| Dimensions at M6 | d k theoretical max 12.6 / actual max=nominal 11.3 / min 10.87; k max=nominal 3.3; f 1.4; R approx. 12; Socket No. 3; Type H: M 1 ref. 7.3, penetration depth max 4 / min 3.5; Type Z: M 1 ref. 7.1, penetration depth max 3.85 / min 3.4; b 28 |
| Dimensions at M10 | d k theoretical max 20 / actual max=nominal 18.3 / min 17.78; k max=nominal 5; f 2.3; R approx. 19.5; Socket No. 4; Type H: M 1 ref. 10.4, penetration depth max 6 / min 5.5; Type Z: M 1 ref. 10.3, penetration depth max 6.05 / min 5.6; b 40 |
| Materials / strength | Not tabulated by the collected specification — per RFQ (property class and finish per drawing callout) |
Materials
- Material, property class and finish specified per RFQ — the collected specification table covers geometry only
Ordering & documentation
Documents
Shipments are backed by Mill Test Certificate (MTC), Dimensional Report, Salt Spray Test Report on request, with full batch traceability from raw material to finished product. Quality management follows the owner-confirmed compliance list: ISO 9001:2015, RoHS, REACH. Exact document sets are confirmed on the order.
Quotation
- The fastener family (ISO 7047 Raised Countersunk Head Screws (H / Z Cross Recess)) plus the standard designation from your drawing — DIN / ISO / JIS / ASTM / ANSI, or a drawing for custom parts.
- Size (diameter and length), thread type (metric or inch), property class or grade, and coating or finish.
- Quantity per size and your target delivery date.
- Destination country, and any required documents (for example a mill test certificate) so the quote includes them.
Sample & supply
Minimum order quantity is 10,000 pieces. Stock items run 3–7 days. Quantities or variants outside the standard range are confirmed at quotation.
Storage & shipping
Parts are packed for export and shipped factory-direct to buyers in Europe, Asia, the Americas and the Middle East. Store fasteners dry and protected until installation, and keep coated parts in their packaging until use; specific packing and preservation requirements can be stated on the order and confirmed at quotation.
Frequently asked questions
Raised countersunk or flat countersunk — what does the crown height f cost and buy?
The f column is what sits above the flush plane — 0.7 mm at M3, 1.4 mm at M6, 2.3 mm at M10 — carried on the crown radius R that shapes it into a smooth dome. What it buys: a head that stays proportioned in thin sheet where the countersink cone cannot fully develop, a snag-safe curved profile for moving parts and adjacent panels, and a cleaner cosmetic seat than the truncated flat head. What it costs: the head no longer disappears — clearance must account for f, and any mating part sliding across the surface rides over the dome rather than past a flush top. Compare the flat-head ISO 7046-1 on this site when true flushness governs; choose ISO 7047 when the countersunk seat must hold but a proud crown is acceptable or wanted.
Does the raised crown change the countersink compared with flat-head screws?
The seat is the same 90-degree cone — the collected table prints the identical theoretical and actual d k values as the flat-head pages size for size — so the countersink tooling does not change. The dome rides on top of the cone instead of being cut off at the surface plane. That interchangeability is the design intent: a part already drilled and countersunk for flat-head screws accepts ISO 7047 with the same fit at the rim, and the choice between them can be made late for cosmetic or clearance reasons without reworking the countersink. Verify the surrounding clearance accepts the f column, and state the head form explicitly when ordering.
What is the MOQ and lead time for these screws?
Minimum order quantity is 10,000 pieces per item. Stocked sizes ship in 3–7 days; non-stock diameters, lengths or finishes are quoted with a confirmed schedule. Common sizes in this designation are widely stocked — confirm the exact schedule against quantity and size mix at quotation.
Related knowledge
- Thread-Forming vs Thread-Cutting vs Thread-Rolling Self-Tapping Screws: What the Evidence Settles on Base Material
- Screw Family Selection by Base Material: Wood, Machine and Self-Tapping Threads, Engagement and Coating
- Hex Bolts vs Socket Head Cap Screws: What the Evidence Settles on Strength, Clearance and Cost
Request a Quote
Get factory-direct pricing from the manufacturer.
What to include in your inquiry
- ✓ Standard and property class (e.g. DIN 912, ISO 4762, class 8.8) — or a drawing for custom parts.
- ✓ Sizes, lengths and thread type (metric or inch).
- ✓ Quantity per size and your target delivery date.
- ✓ Destination country, plus any coating or finish requirement.
- ✓ Any documents you need with the shipment (e.g. mill test certificate) so the quote includes them.
- ✓ Your inquiry goes straight to the factory team by email and gets a reply within 24 hours.
- ✓ Factory-direct pricing
- ✓ Standard and custom specifications
- ✓ Factory-direct export to buyers in Europe, Asia, the Americas and the Middle East
- ✓ Full fastener family support