M14 Self-Locking Counter Nuts are manufactured to DIN 7967. This page lists the controlling dimensions for the M14 size together with 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.
M14 Dimensional Row (DIN 7967)
| Size | od (mm) | id (mm) | Nut height m (mm) | Width across flats s (mm) | t (mm) | Reference standard |
|---|---|---|---|---|---|---|
| M14 | 14 | 12 | 5 | 22 | 0.6 | DIN 7967 |
Spanner & Drive for M14 Self-Locking Counter Nuts
Drive geometry for M14 Self-Locking Counter Nuts is given by the row above; match the tool to the listed values.
Tightening Torque for M14
| Class 8.8 (dry, ~µ 0.125) | ≈ 134 Nm |
|---|---|
| Class 10.9 (dry, ~µ 0.125) | ≈ 197 Nm |
| Class 12.9 (dry, ~µ 0.125) | ≈ 231 Nm |
Indicative dry-joint values. Lubrication can lower the required torque by 15–25%. Always confirm against the joint design, especially when going up a strength class.
Proof Load & Strength for M14
Nuts are graded to ISO 898-2 by the proof load the nut itself will hold (classes 04, 05, 5, 6, 8, 10 and 12), not by the 8.8 / 10.9 / 12.9 scale used for bolts. A class-8 nut is the correct mate for a class-8.8 bolt, and the joint is designed on the bolt, so no bolt-tension figure is quoted here.
Mating Parts for M14
Pair M14 with the matching M14 bolt or screw, plus a M14 flat washer where required to distribute load on softer materials.
Custom manufacturing · Made to drawing
Need self-locking counter nuts in a size this table does not list?
This page covers M14 self-locking counter nuts. Height and across-flats are the two most often changed — a thinner nut for clearance, a larger hex for a tool that is already on the line. Made by cold heading or tapping.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
