Rivet nuts (blind threaded inserts), flat head: hole size, grip range, body and flange dimensions, M3–M12 and #6-32 to 3/8-16

length

131.7 mm

width

32.1 mm

height

3.0 mm

Notes

• A rivet nut (rivnut, blind threaded insert) is a flanged tube with an internal thread that is pulled up from the blind side of a sheet. The hole is round, the nut's body is a close fit in it, and the grip range is the sheet thickness the one nut length covers. Metric rows are Westfield's flat-head knurled open-end zinc steel table (mm); inch rows are a flat-head large-flange maker datasheet, max / min as printed. The 'in' rows are separate from the metric rows, not conversions.
• Hole diameter: Westfield prints 5.0, 6.0, 7.0, 9.0, 11.0, 13.0, 16.0 mm for M3 to M12; PEM (Sherex) recommends 5.1, 6.1, 7.1, 9.1, 11.1, 13.1, 16.1 mm ±0.1 mm for standard round-body nuts. The hole gauge uses the PEM numbers. PEM does not give hole sizes for hex, slotted, countersunk or low-profile bodies. Inch drill sizes are as printed on the datasheet (#12, #2, #E, #Q, #Z, 12.5 mm); their decimal sizes are not printed there, so none is shown.
• Length: the metric column is Westfield's 'Body Overall Length'. The same table also has a column headed 'length' that is not clearly defined, and for M5 0.5–2.5 mm it prints 14.0 against an overall length of 13.0, so that column is left out. The inch column is the datasheet's 'Body Length', and it does not say whether that is before or after installing.
• Flange OD and thickness differ by maker and finish, so check the maker of the nut you buy. Flange OD, in mm, M3 / M4 / M5 / M6 / M8 / M10 / M12: Westfield zinc 8.0 / 9.0 / 10.0 / 12.3 / 14.5 / 17.0 / 22.0; Westfield stainless 8 / 9 / 10 / 13 / 16 / 19 / 23; RS PRO A2 7.0 / 9.0 / 10.0 / 12.5 / 15.0 / 17.0 / 22.0. Body OD agrees in all of them (4.9, 5.9, 6.9, 8.9, 10.9, 12.9, 15.9 mm).
• Not on this page and not drawn: the internal thread depth, thread minor diameter and wall thickness (not printed), the knurl or hex pattern, the thickness at the flange fillet, and installed (collapsed) shape. The rivet nut itself is therefore not modelled; the file is a hole gauge. Westfield's stainless table has a printed M12 hole of 13 mm that is smaller than its own body OD, so stainless rows are not used.
• McMaster-Carr sells most of these with per-part STEP; this page links its category and does not copy its files. McMaster's filters list thread sizes 4-40 to 1/2-20 and M3 to M12, consistent with the range here.

Rivet nuts (blind threaded inserts), flat head: hole size, grip… size chart

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Free files

★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

Plain text: sheet.txt · JSON: /api/geometry?object=rivet-nuts-flat-head

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