ISO 8735 Parallel Pins with Internal Thread
ISO 8735 parallel pins with internal thread, d m6 6 to 20 — the extractable dowel pin for large diameters, with the collected d2/f1/f2/t thread-geometry rows over the m6 tolerance shank.
Last updated: 2026-11
Specifications
Once a dowel pin exceeds roughly 12 mm, driving it out of a blind hole damages the bore — so the large sizes carry an internal thread: a screw or puller threads into the pin's blind end and extraction becomes a controlled operation instead of a fight. ISO 8735 is that designation: parallel body, m6 tolerance shank (the d m6 column header is the source's own), M-internal thread sized per diameter — the collected rows give d2 (M 4 at d 6 up to M 10 at d 20), thread-runout/counterbore depths f1 (2,1 → 6) and f2 (0,8 → 2,5), and thread depth t (6 → 16). Note the catalogue relationship carried from the partition: ISO 8733 (also in this catalog, d1 6-50 with its own c1/c2/t1-t3 column set) is a separate designation, not a duplicate of this page — order by the designation your drawing calls. The collected page tabulates thread geometry only: the length ladder, hardness (hardened steel is the trade default for dowel duty) and finish are not on it — per RFQ.
| Standard | ISO 8735 — parallel pins with internal thread (extractable dowel pin, m6 shank tolerance) |
|---|---|
| Size range | d m6: 6 – 20 in the collected rows |
| Internal thread | d2: M 4 (d 6) → M 10 (d 20); thread depth t: 6 → 16 |
| Thread-end depths | f1: 2,1 → 6; f2: 0,8 → 2,5 (source labels f1/f2 carried verbatim) |
| Not tabulated | Length ladder, hardness, finish — per RFQ |
| Designation note | ISO 8733 (d1 6-50, c1/c2/t1-t3 columns) is a separate identity in this catalog — order by drawing designation |
| d m6 | 6 | 8 | 10 | 12 | 14 | 16 | 20 |
|---|---|---|---|---|---|---|---|
| d2 | M 4 | M 5 | M 6 | M 6 | M 8 | M 8 | M 10 |
| f1 | 2,1 | 2,6 | 3 | 3,8 | 4 | 4,7 | 6 |
| f2 | 0,8 | 1 | 1,2 | 1,6 | 1,8 | 2 | 2,5 |
| t | 6 | 8 | 10 | 10 | 12 | 12 | 16 |
Materials
- Material and hardness specified per RFQ — internal-thread dowel pins commonly run hardened alloy steel (m6 tolerance ground after hardening); stainless for corrosive cells at reduced wear life; state the bore depth and whether the joint is reamed m6 at quotation, since the extract-thread depth t must clear your boss thickness
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 8735 Parallel Pins with Internal Thread) 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 quantities and lead times for this family are confirmed at quotation — send your sizes, grades and quantities on the RFQ and the quote will carry a firm schedule. Sample availability is confirmed with the 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
This page and the ISO 8733 parallel-pin page — why two designations with internal thread?
Because they are different standards with different collected bodies, and your drawing names one of them. The ISO 8733 capture (d1 6 to 50) tabulates c1/c2 chamfers and a t1/t2/t3 thread-geometry stack across the full large-diameter range; this ISO 8735 capture covers d m6 6 to 20 with the f1/f2/t column set — same extraction principle (screw into a blind internal thread), different size window and column presentation. The partition discipline here is the same as the catalog's other designation pairs: no page claims token identity with the other, and where the columns overlap the envelopes sit close but are not asserted equal. Practical rule: a drawing marked ISO 8735 → this page; marked ISO 8733 → the 8733 page; if the drawing only says "dowel pin with internal thread", match the diameter and thread — d2 runs M 4 at d 6 to M 10 at d 20 here — and confirm per RFQ. Lengths, hardness and finish are not tabulated on either captured page and are quoted per RFQ.
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