Chipboard screws, DIN 7505 (3, 3.5, 4, 4.5, 5, 6 mm): pan, countersunk and oval-countersunk head dimensions, cross recess size + type-B envelope models — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/chipboard-wood-screws-din-7505/ (sheet CC BY 4.0) Basis: fasten.it's DIN 7505 table (types A, B and C, the 1986 edition, now with no current standard of its own), Flints' catalogue for the Spax drive sizes; six type-B envelope models as files Catalog version: 2026-10-20 Overall (mm): length 40.0, width 12.0, height 12.0 - Millimetres. DIN 7505 covers screws for particle board with cross recess form Z in three head forms: A pan, B flat countersunk, C oval countersunk; nominal diameters 3, 3.5, 4, 4.5, 5 and 6 mm. fasten.it states there are no more technical norms for these screws and that sizes can vary between makers. The page prints no lengths. Columns follow the page: nominal diameter, P (pitch, ±10 %), dk (head diameter, min–max), k (head height, max for A and B, ≈ for C), a (max), r (min for A, min–max for B, max for C), d1 and d2 (min–max, not defined on the page), recess number, m (≈, not defined) and t (min–max, not defined). - Recess number agrees with the Spax pairing in Flints' catalogue: 3 mm PZ1; 3.5, 4, 4.5 and 5 mm PZ2; 6 mm PZ3 (Flints prints only the drive size, no head dimensions). Klimas' Ø5 mm KMH chipboard screw sheet (PZ2) was found but not tabulated. - Pilot holes are not on this page: no published table for metric chipboard screws could be verified (Spax' own sheets give only 'without pre-drilling, depending on the wood'). Flints' catalogue has a pilot-hole table for imperial gauge numbers, which is on wood-screws-flat-head-inch as a separate set of sources, not converted here. - Files are Xem-drawn envelopes of the type B head, not the real screw: a cone from dk max at the top down to the nominal diameter over k max, then a plain shank at the nominal diameter (the real thread major diameter is d1 and the thread is smaller at the root); no cross recess, no thread, no point. The overall length 40 mm is an example chosen by Xem for all six files, not a published length. - Not on this page: SPAX trade-name geometry (4CUT tip, T-STAR plus drive), Torx-drive chipboard screws, and screw lengths. Countersunk metric machine screws: countersunk-screws-metric. head type nominal Ø P (pitch ±10 %) dk (head dia, min–max) k (height) a max r d1 (min–max) d2 (min–max) recess no. m ≈ t (min–max) Type A (pan head) 3 1.35 5.52–6 2.37 (max) 1.35 0.25 min 2.75–3 1.5–1.9 1 3.12 1.68–1.93 Type A (pan head) 3.5 1.6 6.62–7 2.72 (max) 1.6 0.3 min 3.2–3.5 1.67–2.15 2 3.81 1.65–2.11 Type A (pan head) 4 1.8 7.42–8 2.92 (max) 1.8 0.3 min 3.7–4 2.02–2.5 2 4.65 1.9–2.36 Type A (pan head) 4.5 2 8.42–9 3.15 (max) 2 0.3 min 4.2–4.5 2.22–2.7 2 5 2.64–3.1 Type A (pan head) 5 2.2 9.42–10 3.65 (max) 2.2 0.3 min 4.7–5 2.52–3 2 5.28 2.64–3.1 Type A (pan head) 6 2.6 11.3–12 4.25 (max) 2.6 0.4 min 5.7–6 3.22–3.7 3 6.63 3.02–3.48 Type B (flat countersunk) 3 1.35 5.6–6 1.9 (max) 1.6 1.2–1.6 2.8–3 1.7–1.9 1 3 1.6–2 Type B (flat countersunk) 3.5 1.6 6.6–7 2.1 (max) 1.8 1.5–1.9 3.3–3.5 2–2.2 2 4 1.6–2.1 Type B (flat countersunk) 4 1.8 7.5–8 2.5 (max) 2 1.6–2.1 3.75–4 2.25–2.5 2 4.4 2.05–2.5 Type B (flat countersunk) 4.5 2 8.5–9 2.7 (max) 2.2 1.8–2.3 4.25–4.5 2.45–2.7 2 4.8 2.6–3.1 Type B (flat countersunk) 5 2.2 9.5–10 3 (max) 2.5 2–2.6 4.7–5 2.7–3 2 5.3 3–3.45 Type B (flat countersunk) 6 2.6 11.5–12 3.6 (max) 3 2–2.6 5.7–6 3.4–3.7 3 6.6 3–3.45 Type C (oval countersunk) 3 1.35 5.7–6 1.8 (≈) 2.35 1.5 max 2.75–3 1.5–1.9 1 3.12 1.78–2.08 Type C (oval countersunk) 3.5 1.6 6.64–7 2 (≈) 2.6 1.8 max 3.2–3.5 1.67–2.15 2 4.06 1.81–2.11 Type C (oval countersunk) 4 1.8 7.64–8 2.35 (≈) 2.8 2 max 3.7–4 2.02–2.5 2 4.65 2.42–2.72 Type C (oval countersunk) 4.5 2 8.64–9 2.55 (≈) 3 2.2 max 4.2–4.5 2.22–2.7 2 5.08 2.85–3.15 Type C (oval countersunk) 5 2.2 9.64–10 2.85 (≈) 3.2 2.5 max 4.7–5 2.52–3 2 5.28 2.89–3.35 Type C (oval countersunk) 6 2.6 11.57–12 3.35 (≈) 3.6 2.5 max 5.7–6 3.22–3.7 3 7 3.4–3.86 Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - fasten.it: DIN 7505 particle board (chipboard) screws with cross recess Z, types A (pan), B (countersunk) and C (oval countersunk), 3 to 6 mm: P, dk, k, a, r, d1, d2, recess no., m, t (1986 table; no lengths) — web — Reference page; numbers only. The page does not define the column letters beyond the names dk, k and the nominal diameter — https://www.fasten.it/norms/norm/din_7505 - Flints (catalogue PDF): Wood screw gauge table (No. 2 to 14: diameter mm, pilot hole) and Spax metric screws by nominal diameter 3 / 3.5 / 4 / 4.5 / 5 / 6 mm with drive PZ1 / PZ2 / PZ3 — web — Distributor catalogue; numbers only — https://www.flints.co.uk/pdf/catalogue/screws.pdf - Klimas (via JMB): Wkret-met KMH chipboard screw, countersunk head, Ø5 mm, PZ2: technical sheet (cross-reference; not tabulated) — web — Maker sheet; not used for numbers — https://jmbonline.sk/cdn/shop/files/KLIMAS_Wkret-met_KMH_O5_mm_PZ-2_skrutka_do_dreva_so_zapustnou_krizovou_hlavou_-_technicky_list_EN.pdf Free files (CC BY 4.0, Xem Studio; STEP + STL, 6 parts): https://xemstudio.com/files/hardware/chipboard-wood-screws-din-7505/index.json API: https://xemstudio.com/api/geometry?object=chipboard-wood-screws-din-7505