ISO 7048 Cross-Recessed Cheese Head Screws
ISO 7048 cross-recessed cheese head screws M2,5 to M8 — the tall cylindrical head with a cross recess, with the collected a/b/dk/da/k/r/x geometry rows and the unlegended cross-recess numeral row.
Last updated: 2026-11
Specifications
The cheese head buys head height for slot depth: a tall cylindrical head with parallel sides gives the cross recess more depth to bite, so it survives higher driving torque than a pan head of the same nominal — and it needs a taller counterbore when it must sit below surface. The collected ladder covers M2,5 to M8 with thread end a max., thread engagement b min. (25 at the small sizes, 38 from M4 up), head diameter dk max. (4,5 → 13), abutment da max., head height k max. (1,8 → 5), fillet r min. and thread runout x max. The final m row (1/2/2/2/3/3) is unlegended on the collected page — read as the cross-recess numeral per size and flagged verbatim; confirm the recess number per RFQ if your assembly tooling is size-specific. Property class and finish are not tabulated — per RFQ.
| Standard | ISO 7048 — cross-recessed cheese head screws (H or Z recess per drawing) |
|---|---|
| Size range | M2,5 – M8 in the collected ladder |
| Head geometry | dk max. 4,5 → 13 mm; k max. 1,8 → 5 — tall cylindrical head, parallel sides |
| Thread engagement | b min.: 25 (M2,5/M3) → 38 (M4 – M8) |
| Flagged verbatim | the m row (1 / 2 / 2 / 2 / 3 / 3) is unlegended — read as the cross-recess numeral, confirm per RFQ |
| Material / class / finish | Not tabulated by the collected specification — per RFQ |
| thread d | M2,5 | M3 | M4 | M5 | M6 | M8 |
|---|---|---|---|---|---|---|
| a max. | 0,9 | 1 | 1,4 | 1,6 | 2 | 2,5 |
| b min. | 25 | 25 | 38 | 38 | 38 | 38 |
| dk max. | 4,5 | 5,5 | 7 | 8,5 | 10 | 13 |
| da max. | 3,1 | 3,6 | 4,7 | 5,7 | 6,8 | 9,2 |
| k max. | 1,8 | 2 | 2,6 | 3,3 | 3,9 | 5 |
| r min. | 0,1 | 0,1 | 0,2 | 0,2 | 0,25 | 0,4 |
| x max. | 1,1 | 1,25 | 1,75 | 2 | 2,5 | 3,2 |
| m | 1 | 2 | 2 | 2 | 3 | 3 |
- Row 8 (m): the final m row (1 / 2 / 2 / 2 / 3 / 3) is unlegended on the collected page; read as the cross-recess numeral per size - confirm per RFQ before tooling
Materials
- Property class and finish specified per RFQ — machine-thread cheese heads commonly run class 4.8/8.8 steel; state the recess type (H or Z) and any stainless or finish requirement at quotation
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 7048 Cross-Recessed Cheese Head Screws) 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
Cheese head or pan head — when does the extra head height pay off?
Torque and clearance trade-offs. The cheese head's parallel sides give the cross recess real depth, so it takes more driver torque before cam-out — the pick for small machine screws driven into metal threads where you want the head low-profile but not headless. The pan head is shallower but stronger over the top; the countersunk hides flush. The collected ISO 7048 ladder (M2,5 – M8, dk max. 4,5 → 13, k max. 1,8 → 5) gives you the counterbore numbers: head height runs roughly 40% of diameter, noticeably taller than a pan head of the same size — plan the pocket accordingly. Two reading notes: thread engagement b min. is 25 mm at M2,5/M3 and 38 from M4 up, and the final m row is unlegended in the capture — it reads as the cross-recess numeral (1/2/2/2/3/3), which is flagged rather than asserted; confirm recess type and number per RFQ if your driver tooling is fixed. Class and finish per RFQ.
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