What Is a DIN 439 Hex Jam Nut?
DIN 439 Hex Jam Nuts
ISO Equivalent: ISO 4035 | Thin/Half-Height Hex Nuts
DIN 439 specifies thin hexagon nuts (jam nuts) at approximately half the height of standard DIN 934 nuts. Ideal for locking applications, limited-clearance assemblies, and as a secondary nut in double-nut locking configurations.
Quick Specifications
Type
Thin / Jam Nut
Height
0.5 × Diameter
Size Range
M3 – M64
Property Class
04, 05
ISO Equivalent
ISO 4035
Dimension Chart
| Size | Pitch (mm) | Wrench Size | Height (m) |
|---|---|---|---|
| M4 | 0.7 | 7 mm | 2.2 mm |
| M5 | 0.8 | 8 mm | 2.7 mm |
| M6 | 1.0 | 10 mm | 3.2 mm |
| M8 | 1.25 | 13 mm | 4.0 mm |
| M10 | 1.5 | 16 mm | 5.0 mm |
| M12 | 1.75 | 18 mm | 6.0 mm |
| M16 | 2.0 | 24 mm | 8.0 mm |
| M20 | 2.5 | 30 mm | 10.0 mm |
Common Applications
🔒
Lock Nut Pairs
📏
Low-Clearance Areas
⚖️
Weight Reduction
🎛️
Adjustment Points
Material Options
⚙️
Steel – Zinc Plated
Standard carbon steel with zinc coating for general indoor applications.
🛡️
A2 Stainless (304)
Corrosion resistant for outdoor and mildly corrosive environments.
💡 DIN 439 vs ISO 4035
Fully interchangeable — Both standards define thin hex nuts with identical dimensions and thread specifications.
Shop DIN 439 Jam Nuts
Thin hex nuts in steel and stainless. Perfect for locking and space-constrained assemblies.
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