M20 Steel Hex Nut, Class 5
M20 hex nut, ISO 898-2 property class 5, manufactured to DIN 934 / ISO 4032 with ISO metric coarse thread. Carbon steel — specify zinc plating or hot-dip galvanizing in your quote if corrosion protection is required.
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Applications & Usage
M20 class 5 hex nuts pair with class 4.8 bolts and studs for light frames, covers, and non-critical joints. Step up to class 8 or 10 for load-bearing or pretensioned assemblies.
Technical Specifications
| Specification | Value |
|---|---|
| Dimensions | M20 |
| Weight per Piece | 64 g/pc |
| Material | Steel |
| Alloy/Grade | ISO 898-2 class 5 |
| Standard | DIN 934 / ISO 4032 |
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Technical guides
Bolt grades and sizes: 8.8, 10.9, 12.9, A2 and A4, and metric hex bolt dimensions
What the property classes 4.8, 8.8, 10.9 and 12.9 and stainless A2-70 and A4-70 mean, minimum strength and tensile loads, metric thread pitch and hex head sizes, DIN 933 vs DIN 931, and which nut goes with which bolt.
Read the guide →Nut and washer types compared: hex, lock, flange, castle, coupling, cap and HV nuts, flat, spring and structural washers, with their standards
How hex, thin, nylon-insert and all-metal lock, flange, castle, coupling, cap, wing and HV nuts differ, which nut class goes with which bolt, and when to use DIN 125, DIN 127, DIN 7989 and DIN 6916 washers.
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