Toggle latches and draw latches: Ganter GN 831 size 100 dimensions and mounting, McMaster-Carr draw latch ranges, Southco catalog notes — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/toggle-latches-gn-831-and-draw-latches/  (sheet CC BY 4.0)
Basis: Ganter's GN 831 toggle latch page (size 100), the option lists on McMaster-Carr's draw latch page, and a Southco draw-latch catalog excerpt; numbers only
Catalog version: 2026-10-20

Sizes: see table below
- Ganter GN 831 size 100, in the symbols and order Ganter prints (no units printed; mm assumed from the decimal-comma values): holding capacity FH 1000 N; b1 25.5, b2 22, b3 26, b4 14, d 4.2; h1 18.5, h2 8.5, h3 21.5, h4 25.5; l1 min 67 (types A and SV) or 74 (type S), l2 min 56 or 63; l3 19.5; l4 min 31 or 38 and l5 min 54 or 61 (coding 2); m1 14.3, m2 7, m3 4, m4 8; r 51; w1 ≈ 5.5 (stroke) and w2 ≈ 12 (A, SV) or 8 (S) (adjustable range). The page does not label any column as hook, bolt, mounting hole or closing, so d = 4.2 is not called a hole size here. It describes the clamping hook as pulling parts together 'by up to 5 mm' while the table lists w1 ≈ 5.5, and never defines 'coding 1 / 2', so these are shown as printed. Only size 100 appeared in the table the filter returned; other GN 831 sizes are not shown.
- McMaster-Carr's draw latch page prints option lists, not part rows: overall length 1-7/16 to 2-3/4 in, overall width 1/2 to 5 in, projection 1/16 to 2-3/8 in, latching distance 3/16 to 1-13/16 in, mounting screws No. 2 to 5/16 in and M3 to M10, and weight capacity bins; strike plate material is listed but no strike plate or hole spacing dimension. The page does not say which values go together; use the part page for a particular latch.
- The Southco numbers are caption values from a draw-latch catalog excerpt hosted by NauticExpo (the host page titles it 'C7 draw latch'): four Ø4.3 mm mounting holes, Ø4 rivets or M4 screws for the small size and Ø5 rivets or M5 screws for the large, clamping force 49 N (small) and 176 N (large). The excerpt did not print part numbers, so which latch each value belongs to is not stated; they are quoted only as read. Southco's own tables were not read.
- Hold-down toggle clamps are on toggle-clamps-hold-down; push-to-open latches on drill-in-push-to-open-latches and southco-93-push-to-close-latch; magnetic touch latches on sugatsune-lamp-touch-latches. No file: the hook, lever and catch shapes are not given as numbers. McMaster-Carr sells draw latches and toggle latch clamps with per-part STEP; linked, not copied.

source  load / force  widths, diameters  heights  lengths, travel
Ganter GN 831 size 100 (table 1)  FH 1000 N  b1 25.5; b2 22; b3 26; b4 14; d 4.2  h1 18.5; h2 8.5; h3 21.5; h4 25.5  l1 min 67 (A / SV), 74 (S); l2 min 56 (A / SV), 63 (S)
Ganter GN 831 size 100 (table 2)  —  l3 19.5; l4 min 31 (A / SV), 38 (S); l5 min 54 (A / SV), 61 (S)  m1 14.3; m2 7; m3 4; m4 8; r 51  w1 ≈ 5.5 (stroke); w2 ≈ 12 (A / SV), 8 (S) (adjustable range)
McMaster-Carr draw latches (option lists, in)  weight capacity bins: under 500 lb to 3,000 lb and over; or not rated  overall length: 1-7/16, 1-5/8, 1-3/4, 1-7/8, 2, 2-1/16 ... 2-23/32, 2-3/4  overall width: 1/2, 9/16, 11/16, 3/4 ... 4, 4-1/2, 5 in  projection: 1/16 to 2-3/8; latching distance: 3/16 to 1-13/16; mounting screws No. 2 to 1/4, 5/16, M3 to M10
Southco draw latch excerpt (catalog caption values)  clamping force: small 49 N (11 lbf); large 176 N (40 lbf)  four mounting holes Ø4.3 mm; Ø4 rivets or M4 (No. 8) screws (small); Ø5 rivets or M5 (No. 10) screws (large)  latched dimension 15.1 mm (.60 in); latch assembly 164 mm (6.45 in); keeper installation 17.5 ±0.1 and 72 ±3 mm (unlabelled)  part number-to-size link not printed

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Ganter: GN 831 toggle latches, steel / stainless steel: size 100, holding capacity FH, b1 to b4, d, h1 to h4, l1 to l5, m1 to m4, r, w1, w2 (types A, SV, S) — web — Maker product page; numbers only. Only size 100 appears in the filtered table; no units printed — https://www.ganternorm.com/en/products/product-family/Stainless-Steel/GN-831-Toggle-latches-Steel-Stainless-Steel
- McMaster-Carr: Draw latches (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/draw-latches
- McMaster-Carr: Toggle latch clamps (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/toggle-latch-clamps/
- Southco (via a catalog excerpt): Draw latch catalog excerpt: mounting holes Ø4.3 (4 holes), M4 / Ø4 rivets (small), M5 / Ø5 rivets (large), clamping force 49 N (small) and 176 N (large) — web — Catalog excerpt; used for the quoted notes only — https://pdf.nauticexpo.com/pdf/southco/c7-draw-latch/22514-91219.html

No true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.
API: https://xemstudio.com/api/geometry?object=toggle-latches-gn-831-and-draw-latches