M4x20 Steel Flange Hex Bolt 8.8
M4x20 hex flange bolt, property class 8.8 to DIN 6921 / EN 1665, with an integral washer flange under the head. Carbon steel — distributes clamp load without a separate washer; request coating if corrosion protection is required.
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Applications & Usage
M4x20 class 8.8 flange bolts are used on sheet-metal and machinery joints where an integral flange replaces a washer.
Technical Specifications
| Specification | Value |
|---|---|
| Dimensions | M4x20 |
| Weight per Piece | 3 g/pc |
| Material | Steel |
| Alloy/Grade | ISO 898-1 class 8.8 |
| Standard | DIN 6921 / EN 1665 |
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Technical guides
Flange dimensions: EN 1092-1 PN6 to PN40 and ASME B16.5 Class 150 and 300
Flange dimension tables for EN 1092-1 PN6, PN10, PN16, PN25 and PN40 and ASME B16.5 Class 150 and 300: outside diameter, bolt circle, number and size of bolts, and why PN and Class flanges do not mate.
Read the guide →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.
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