Metric machine screws M1.6–M10: pan head ISO 7045 (cross) / ISO 1580 (slotted), cheese head ISO 1207, countersunk ISO 7046-1 — head sizes, recess sizes + models — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/machine-screws-metric-pan-cheese-csk/ (sheet CC BY 4.0) Basis: ISO preview pages for ISO 7045:2011, ISO 1580:2011, ISO 1207:2011 and ISO 7046-1:2011 (iTeh Standards), cross-checked against Westfield Fasteners' DIN 7985, DIN 85, DIN 84, DIN 965 tables, fasten.it and Engineers Edge; 36 envelope models as files Catalog version: 2026-10-20 Overall (mm): length 37.5, width 20.0, height 37.5 - Dimensions in mm from the ISO preview tables (iTeh Standards), max and min as printed: pitch P, head diameter dk, head height k (kc for the countersunk head), slot width n and depth t, rf, r, x and, for the cross-recessed heads, the recess width m (reference) and penetration depth (type H and type Z). (M3.5) is in the standards but the standards say to avoid it, so it is tabulated and has no file. These four are the ISO versions of the old DIN 7985 (pan, cross), DIN 85 (pan, slotted), DIN 84 (cheese, slotted) and DIN 965 (countersunk, cross) screws. - ISO 7045:2011 against DIN 7985: Westfield's DIN 7985 table prints dk 6 (M3) and 10 (M5) and k 3.8 (M5); the ISO 7045:2011 preview prints dk 5.6 and 9.5 and k 3.7. The 2011 ISO values match ISO 1580 (the slotted pan head) for dk. fasten.it's older 'ISO 7045' page also carries dk 6 for M3. Both sets are real standards of different dates; ISO 7045:2011 is on this page, DIN 7985 is not tabulated. - ISO 7046-1 against DIN 965: the ISO dk max is larger than DIN 965 from M4 up (ISO 7046-1: M4 8.4, M5 9.3, M6 11.3, M8 15.8, M10 18.3; Westfield's DIN 965: M4 7.5, M5 9.2, M6 11, M8 14.5, M10 18; at M3 it is 5.5 against 5.6), and the countersunk head height kc is larger (M4 2.7 against 2.2). fasten.it's ISO 7046-1 page prints M3.5 k as 1.35 against the preview's 2.35 (a typo on one of them; the preview's value is used). The recess number per size (0 for M1.6 and M2, 1 for M2.5 and M3, 2 for M3.5 to M5, 3 for M6, 4 for M8 and M10) is fasten.it's; the preview pages list recess numbers without a size map but its m and penetration rows agree with fasten.it's in order. - Engineers Edge's page 'ISO 1207' holds two tables: the slotted cheese head dk and k for M4 to M10 (7.0, 8.5, 10, 13, 16 and 2.6, 3.3, 3.9, 5.0, 6.0) and the pan head for M1.6 to M10; both match the ISO previews. fasten.it's ISO 1580 page agrees on dk, k, t and n. - Files are Xem-drawn envelopes at true nominal size, M1.6 to M10 without M3.5 (9 sizes x 4 heads): ISO 1580 and ISO 1207 = cylinder dk x k with the published slot (n nom wide, t min deep; the top-edge rf of ISO 1580 is not drawn); ISO 7045 = cylinder with a spherical crown of radius rf over dk, total height k max, side wall computed (reading rf, an approximate value in the standard, as the crown radius); ISO 7046-1 = the 90° cone built from the published theoretical diameter and truncated at dk with a rim up to kc (checked: (theoretical max - d) / 2 = kc for every size); plain shank at the nominal diameter. No cross recess, no thread. Example lengths (6, 8, 10, 10, 12, 16, 20, 25, 30 mm for M1.6, M2, M2.5, M3, M4, M5, M6, M8, M10; all are commercial lengths listed for ISO 1207 by Engineers Edge) are Xem's choice. - Metric screws with socket drives: socket-head-cap-screws-metric, button-head-screws-metric, countersunk-screws-metric (ISO 10642, 90°). Inch machine screws: machine-screws-inch-asme-b18-6-3. Tap drills and clearance holes: thread-reference-tap-drills-clearance. standard size pitch P (mm) head dia dk max / min (mm) head height k max / min (mm) slot (n, t) or cross recess (m, penetration) (mm) other (mm) ISO 1580 slotted pan M1.6 0.35 3.2 / 2.9 1.0 / 0.86 slot n 0.4 nom (0.46–0.6), t min 0.35 rf ≈ 0.5; r min 0.1; x max 0.9 ISO 1580 slotted pan M2 0.4 4.0 / 3.7 1.3 / 1.16 slot n 0.5 nom (0.56–0.7), t min 0.5 rf ≈ 0.6; r min 0.1; x max 1.0 ISO 1580 slotted pan M2.5 0.45 5.0 / 4.7 1.5 / 1.36 slot n 0.6 nom (0.66–0.8), t min 0.6 rf ≈ 0.8; r min 0.1; x max 1.1 ISO 1580 slotted pan M3 0.5 5.6 / 5.3 1.8 / 1.66 slot n 0.8 nom (0.86–1.0), t min 0.7 rf ≈ 0.9; r min 0.1; x max 1.25 ISO 1580 slotted pan (M3.5) 0.6 7.0 / 6.64 2.1 / 1.96 slot n 1.0 nom (1.06–1.2), t min 0.8 rf ≈ 1.0; r min 0.1; x max 1.5 ISO 1580 slotted pan M4 0.7 8.0 / 7.64 2.4 / 2.26 slot n 1.2 nom (1.26–1.51), t min 1.0 rf ≈ 1.2; r min 0.2; x max 1.75 ISO 1580 slotted pan M5 0.8 9.5 / 9.14 3.0 / 2.86 slot n 1.2 nom (1.26–1.51), t min 1.2 rf ≈ 1.5; r min 0.2; x max 2.0 ISO 1580 slotted pan M6 1 12.0 / 11.57 3.6 / 3.3 slot n 1.6 nom (1.66–1.91), t min 1.4 rf ≈ 1.8; r min 0.25; x max 2.5 ISO 1580 slotted pan M8 1.25 16.0 / 15.57 4.8 / 4.5 slot n 2.0 nom (2.06–2.31), t min 1.9 rf ≈ 2.4; r min 0.4; x max 3.2 ISO 1580 slotted pan M10 1.5 20.0 / 19.48 6.0 / 5.7 slot n 2.5 nom (2.56–2.81), t min 2.4 rf ≈ 3.0; r min 0.4; x max 3.8 ISO 1207 slotted cheese M1.6 0.35 3.0 / 2.86 1.1 / 0.96 slot n 0.4 nom (0.46–0.6), t min 0.45, w min 0.4 r min 0.1; x max 0.9 ISO 1207 slotted cheese M2 0.4 3.8 / 3.62 1.4 / 1.26 slot n 0.5 nom (0.56–0.7), t min 0.6, w min 0.5 r min 0.1; x max 1.0 ISO 1207 slotted cheese M2.5 0.45 4.5 / 4.32 1.8 / 1.66 slot n 0.6 nom (0.66–0.8), t min 0.7, w min 0.7 r min 0.1; x max 1.1 ISO 1207 slotted cheese M3 0.5 5.5 / 5.32 2.0 / 1.86 slot n 0.8 nom (0.86–1.0), t min 0.85, w min 0.75 r min 0.1; x max 1.25 ISO 1207 slotted cheese (M3.5) 0.6 6.0 / 5.82 2.4 / 2.26 slot n 1.0 nom (1.06–1.2), t min 1.0, w min 1.0 r min 0.1; x max 1.5 ISO 1207 slotted cheese M4 0.7 7.0 / 6.78 2.6 / 2.46 slot n 1.2 nom (1.26–1.51), t min 1.1, w min 1.1 r min 0.2; x max 1.75 ISO 1207 slotted cheese M5 0.8 8.5 / 8.28 3.3 / 3.12 slot n 1.2 nom (1.26–1.51), t min 1.3, w min 1.3 r min 0.2; x max 2.0 ISO 1207 slotted cheese M6 1 10.0 / 9.78 3.9 / 3.6 slot n 1.6 nom (1.66–1.91), t min 1.6, w min 1.6 r min 0.25; x max 2.5 ISO 1207 slotted cheese M8 1.25 13.0 / 12.73 5.0 / 4.7 slot n 2.0 nom (2.06–2.31), t min 2.0, w min 2.0 r min 0.4; x max 3.2 ISO 1207 slotted cheese M10 1.5 16.0 / 15.73 6.0 / 5.7 slot n 2.5 nom (2.56–2.81), t min 2.4, w min 2.4 r min 0.4; x max 3.8 ISO 7045 pan, cross recess (H or Z) M1.6 0.35 3.2 / 2.9 1.3 / 1.16 type H: m ≈ 1.7, penetration 0.7–0.95; type Z: m ≈ 1.6, penetration 0.65–0.9 rf ≈ 2.5; r min 0.1; x max 0.9 ISO 7045 pan, cross recess (H or Z) M2 0.4 4.0 / 3.7 1.6 / 1.46 type H: m ≈ 1.9, penetration 0.9–1.2; type Z: m ≈ 2.1, penetration 1.17–1.42 rf ≈ 3.2; r min 0.1; x max 1.0 ISO 7045 pan, cross recess (H or Z) M2.5 0.45 5.0 / 4.7 2.1 / 1.96 type H: m ≈ 2.7, penetration 1.15–1.55; type Z: m ≈ 2.6, penetration 1.25–1.5 rf ≈ 4.0; r min 0.1; x max 1.1 ISO 7045 pan, cross recess (H or Z) M3 0.5 5.6 / 5.3 2.4 / 2.26 type H: m ≈ 3.0, penetration 1.4–1.8; type Z: m ≈ 2.8, penetration 1.5–1.75 rf ≈ 5.0; r min 0.1; x max 1.25 ISO 7045 pan, cross recess (H or Z) (M3.5) 0.6 7.0 / 6.64 2.6 / 2.46 type H: m ≈ 3.9, penetration 1.4–1.9; type Z: m ≈ 3.9, penetration 1.48–1.93 rf ≈ 6.0; r min 0.1; x max 1.5 ISO 7045 pan, cross recess (H or Z) M4 0.7 8.0 / 7.64 3.1 / 2.92 type H: m ≈ 4.4, penetration 1.9–2.4; type Z: m ≈ 4.3, penetration 1.89–2.34 rf ≈ 6.5; r min 0.2; x max 1.75 ISO 7045 pan, cross recess (H or Z) M5 0.8 9.5 / 9.14 3.7 / 3.52 type H: m ≈ 4.9, penetration 2.4–2.9; type Z: m ≈ 4.7, penetration 2.29–2.74 rf ≈ 8.0; r min 0.2; x max 2.0 ISO 7045 pan, cross recess (H or Z) M6 1 12.0 / 11.57 4.6 / 4.3 type H: m ≈ 6.9, penetration 3.1–3.6; type Z: m ≈ 6.7, penetration 3.03–3.46 rf ≈ 10.0; r min 0.25; x max 2.5 ISO 7045 pan, cross recess (H or Z) M8 1.25 16.0 / 15.57 6.0 / 5.7 type H: m ≈ 9.0, penetration 4.0–4.6; type Z: m ≈ 8.8, penetration 4.05–4.5 rf ≈ 13.0; r min 0.4; x max 3.2 ISO 7045 pan, cross recess (H or Z) M10 1.5 20.0 / 19.48 7.5 / 7.14 type H: m ≈ 10.1, penetration 5.2–5.8; type Z: m ≈ 9.9, penetration 5.24–5.69 rf ≈ 16.0; r min 0.4; x max 3.8 ISO 7046-1 countersunk, cross recess (H or Z) M1.6 0.35 3.0 / 2.7 (theoretical max 3.6) kc 1.0 (max) recess No. 0; type H: m ≈ 1.6, penetration 0.6–0.9; type Z: m ≈ 1.6, penetration 0.7–0.95 r max 0.4; x max 0.9 ISO 7046-1 countersunk, cross recess (H or Z) M2 0.4 3.8 / 3.5 (theoretical max 4.4) kc 1.2 (max) recess No. 0; type H: m ≈ 1.9, penetration 0.9–1.2; type Z: m ≈ 1.9, penetration 0.95–1.2 r max 0.5; x max 1.0 ISO 7046-1 countersunk, cross recess (H or Z) M2.5 0.45 4.7 / 4.4 (theoretical max 5.5) kc 1.5 (max) recess No. 1; type H: m ≈ 2.9, penetration 1.4–1.8; type Z: m ≈ 2.8, penetration 1.48–1.73 r max 0.6; x max 1.1 ISO 7046-1 countersunk, cross recess (H or Z) M3 0.5 5.5 / 5.2 (theoretical max 6.3) kc 1.65 (max) recess No. 1; type H: m ≈ 3.2, penetration 1.7–2.1; type Z: m ≈ 3.0, penetration 1.76–2.01 r max 0.8; x max 1.25 ISO 7046-1 countersunk, cross recess (H or Z) (M3.5) 0.6 7.3 / 6.94 (theoretical max 8.2) kc 2.35 (max) recess No. 2; type H: m ≈ 4.4, penetration 1.9–2.4; type Z: m ≈ 4.1, penetration 1.75–2.2 r max 0.9; x max 1.5 ISO 7046-1 countersunk, cross recess (H or Z) M4 0.7 8.4 / 8.04 (theoretical max 9.4) kc 2.7 (max) recess No. 2; type H: m ≈ 4.6, penetration 2.1–2.6; type Z: m ≈ 4.4, penetration 2.06–2.51 r max 1.0; x max 1.75 ISO 7046-1 countersunk, cross recess (H or Z) M5 0.8 9.3 / 8.94 (theoretical max 10.4) kc 2.7 (max) recess No. 2; type H: m ≈ 5.2, penetration 2.7–3.2; type Z: m ≈ 4.9, penetration 2.6–3.05 r max 1.3; x max 2.0 ISO 7046-1 countersunk, cross recess (H or Z) M6 1 11.3 / 10.87 (theoretical max 12.6) kc 3.3 (max) recess No. 3; type H: m ≈ 6.8, penetration 3.0–3.5; type Z: m ≈ 6.6, penetration 3.0–3.45 r max 1.5; x max 2.5 ISO 7046-1 countersunk, cross recess (H or Z) M8 1.25 15.8 / 15.37 (theoretical max 17.3) kc 4.65 (max) recess No. 4; type H: m ≈ 8.9, penetration 4.0–4.6; type Z: m ≈ 8.8, penetration 4.15–4.6 r max 2.0; x max 3.2 ISO 7046-1 countersunk, cross recess (H or Z) M10 1.5 18.3 / 17.78 (theoretical max 20.0) kc 5.0 (max) recess No. 4; type H: m ≈ 10.0, penetration 5.1–5.7; type Z: m ≈ 9.8, penetration 5.19–5.64 r max 2.5; x max 3.8 Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - iTeh Standards (ISO preview pages): ISO 7045:2011 pan head screws with type H or Z cross recess, product grade A: Table 1 (d, P, a, b, da, dk, k, r, rf, x) and cross recess Table 2 — web — Standards-body preview pages; numbers only — https://cdn.standards.iteh.ai/samples/57372/fafe91d8504049fc8953281401736c79/ISO-7045-2011.pdf - iTeh Standards (ISO preview pages): ISO 1580:2011 slotted pan head screws, product grade A: Table 1 (d, P, a, b, dk, k, n, r, rf, t, w, x) — web — Standards-body preview pages; numbers only — https://cdn.standards.iteh.ai/samples/57369/c0b7cfb7fe9947579329bf75d7778d02/ISO-1580-2011.pdf - iTeh Standards (ISO preview pages): ISO 1207:2011 slotted cheese head screws, product grade A: Table 1 (d, P, a, b, da, dk, k, n, r, t, w, x) — web — Standards-body preview pages; numbers only — https://cdn.standards.iteh.ai/samples/54039/15c540b697434b5d85128ca34672939c/ISO-1207-2011.pdf - iTeh Standards (ISO preview pages): ISO 7046-1:2011 countersunk flat head screws with type H or Z cross recess, steel class 4.8: Table 1 (d, P, b, theoretical max, dk, kc, r, x) and recess data — web — Standards-body preview pages; numbers only — https://cdn.standards.iteh.ai/samples/57373/eec1f81ca47845038a18aa4c66b91e22/ISO-7046-1-2011.pdf - fasten.it: DIN EN ISO 7046-1 countersunk flat head screws: P, k max, dk max, recess number, recess m ref (type H, Z) per size — web — Publisher's page; dimensions are facts — https://fasten.it/Norms/Norm/DIN_EN_ISO_7046_1 - fasten.it: DIN EN ISO 1580 slotted pan head screws M1.6 to M10: P, dk max, k max, t min, n nom (cross-check) — web — Publisher's page; dimensions are facts — https://fasten.it/Norms/Norm/DIN_EN_ISO_1580 - Westfield Fasteners: DIN 7985 pan head cross recess screws (ISO 7045 predecessor) M1.6-M10: dk, k, r, rf, x, recess m, penetration — web — Publisher's page; dimensions are facts — https://westfieldfasteners.co.uk/Standards/ScrewBolt-PhilRaPan-M.pdf - Westfield Fasteners: DIN 85 slotted pan head screws M1.6-M10: dk, k, n, rf, t, w — web — Publisher's page; dimensions are facts — https://westfieldfasteners.co.uk/Standards/ScrewBolt-SlotPan-M.pdf - Westfield Fasteners: DIN 84 slotted cheese head screws M1.6-M10: dk, k, n, t, w — web — Publisher's page; dimensions are facts — https://www.westfieldfasteners.co.uk/Standards/ScrewBolt-SlotChs-M.html - Westfield Fasteners: DIN 965 cross recess countersunk screws M2-M10: dk max / min, k max, r, recess — web — Publisher's page; dimensions are facts — https://www.westfieldfasteners.co.uk/Standards/ScrewBolt-PhilCsk-M.html - Engineers Edge: ISO pan head / cheese head slotted screw size tables (two tables under one ISO 1207 heading: M4-M10 cheese head and M1.6-M10 pan head dk and k) — web — Publisher's page; dimensions are facts — https://engineersedge.com/iso_pan_head.htm - McMaster-Carr: Machine screws (free STEP/IGES per part, for your own design use; no redistribution) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/products/screws/machine-screws/ Free files (CC BY 4.0, Xem Studio; STEP + STL, 36 parts): https://xemstudio.com/files/hardware/machine-screws-metric-pan-cheese-csk/index.json API: https://xemstudio.com/api/geometry?object=machine-screws-metric-pan-cheese-csk