The (M3.5) size of Thin Hex Nuts, Unchamfered is dimensioned by ISO 4036. The table below gives the dimensional row from the standard, followed by the drive and the installation notes for this type.
Values are taken from the governing standard rather than from a general machine-thread table, because this type is not selected on one.
(M3.5) Dimensional Row (ISO 4036)
| Size | Pitch P (mm) | Width across corners e (mm) | Nut height m (mm) | Width across flats s (mm) | Reference standard |
|---|---|---|---|---|---|
| (M3.5) | 0.6 | 6.6 | 2.0 | 6.0 | ISO 4036 |
Spanner & Drive for (M3.5) Thin Hex Nuts, Unchamfered
(M3.5) Thin Hex Nuts, Unchamfered have a width across flats of 6.0 mm — fit a 6.0 mm open-ended spanner or socket. A 6-point socket grips all six flats of the 6.0 mm hex and is what to reach for once a fastener has been on and off a few times; a 12-point ring spanner starts rounding a worn head. For repeatable preload, torque rather than feel.
Installation Tips for (M3.5) Thin Hex Nuts, Unchamfered
- Use a 6-point socket where access allows — 12-point sockets are more prone to rounding the corners on smaller sizes.
- On flanged or serrated variants, do NOT add a separate flat washer — the flange already spreads the load and the washer can defeat the locking serrations.
- At (M3.5) the joint is sensitive to over-torque — use a torque-limiting driver and check the head doesn't bury into a softer counterpart.
Mating Parts for (M3.5)
Pair (M3.5) with the matching (M3.5) bolt or screw, plus a (M3.5) flat washer where required to distribute load on softer materials.
Custom manufacturing · Made to drawing
Need thin hex nuts, unchamfered in a size this table does not list?
This page covers (M3.5) thin hex nuts, unchamfered. Thread, height, across-flats, property class, locking feature and flange form can all be varied, including thread sizes the standard series does not run to. Made by cold heading or tapping.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.

