(M16) Square Weld Nuts are manufactured to DIN 928. This page lists the controlling dimensions for the (M16) 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.
(M16) Dimensional Row (DIN 928)
| Size | Pitch P (mm) | b (mm) | d2 (mm) | d4 (mm) | h1 (mm) | h2 (mm) | Nut height m (mm) | Width across flats s (mm) | Reference standard |
|---|
| (M16) | 2 | 2.5 | 18.8 | 22.4 | 1.6 | 3 | 13 | 24 | DIN 928 |
Spanner & Drive for (M16) Square Weld Nuts
Drive geometry for (M16) Square Weld Nuts is given by the row above; match the tool to the listed values.
Mating Parts for (M16)
Pair (M16) with the matching (M16) bolt or screw, plus a (M16) flat washer where required to distribute load on softer materials.
Custom manufacturing · Made to drawing
Need square weld nuts in a size this table does not list?
This page covers (M16) square weld nuts. 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.
Custom nut manufacturingSend a drawing
Applications & Industries for (M16) Square Weld Nuts
What Square Weld Nuts are specified for, industry by industry. Stocked from M4 to (M16).
Industries that specify Square Weld Nuts
-
Enclosures
threads in thin sheet with no access behind.
-
Agricultural equipment
welded fixing points.
-
Automotive bodies
threaded points in panels and brackets.
-
Steel furniture
frames welded before painting.
-
Building services
Threaded rod, channel and suspension assemblies.
-
Machine building & OEM
The clamping counter-face on studs and bolts throughout an assembly.
Typical applications
- resisting spin with the square body
- replacing tapped holes that strip in sheet
- creating strong threads in thin sheet
- welding before paint so threads stay accessible
- locking an adjustment so it cannot drift
- joints re-torqued at a service interval
Service conditions to specify against
- Marine and coastal
- Available in A4 (316) stainless for chloride exposure — coastal structures, pool halls, water treatment and deck hardware, where A2 will eventually pit.
- High load
- Supplied in ISO 898-1 property classes, so the joint can be designed to a stated proof load and tightened to a calculated torque rather than by feel.
- Match the class
- A nut below the bolt property class strips before the bolt reaches its own limit — pair class 8 nuts with 8.8 bolts, class 10 with 10.9.
Where to use something else
- Do not paint or plate over the thread before assembly; clean the thread or it will bind.
Full application guide: where Square Weld Nuts are used, how to specify them, and the cases they are wrong for
