DIN 603 M16×20 Carriage Bolt15 combinations of material, property class and finish supplied in this size.
- Standard
- DIN 603 · 2017
- Thread
- M16 · pitch 2 mm
- Length under head
- 20 mm
- Clearance / tap drill
- 17 / 17.5 / 18.5 mm · 14 mm
- Weight
- 29.36 kg per 1 000 pieces · Theoretical, from nominal geometry — confirm before ordering34.1 pieces per kg
- Also named
- ISO 8677
Supplied to DIN 603 M16×20. ISO 8677 (dₛ 16.7 mm against 16) and ISO 8678 (v 15.82 mm against 15.3) at this size. Compared on the columns shown here only — product grade, tolerance class, length range, material and property-class references are set by each standard separately. We produce to whichever one your drawing calls out. Full comparison →
Order M16×20
Set a quantity on as many rows as you need. Not listed? We make to your drawing — send it with the enquiry.
These are not identical at M16×20 — the difference is shown against each standard above. Your choice is carried into the inquiry and the quotation.
| Material | Class | Finish | Quantity | Net weight |
|---|---|---|---|---|
| Carbon Steel | 8.8 | Plain | — | |
| Carbon Steel | 8.8 | Zinc Plated | — | |
| Carbon Steel | 8.8 | Hot Dip Galvanized | — | |
| Carbon Steel | 8.8 | Dacromet | — | |
| Carbon Steel | 8.8 | Blackened | — | |
| Carbon Steel | 8.8 | Phosphate | — | |
| Alloy Steel | 10.9 | Plain | — | |
| Alloy Steel | 10.9 | Zinc Plated | — | |
| Alloy Steel | 10.9 | Dacromet | — | |
| Alloy Steel | 10.9 | Blackened | — | |
| Alloy Steel | 10.9 | Phosphate | — | |
| Stainless Steel | A2-70 | Passivated | — | |
| Stainless Steel | A2-70 | Plain | — | |
| Stainless Steel | A4-80 | Passivated | — | |
| Stainless Steel | A4-80 | Plain | — |
Dimensions at M16×20
one row per dimension| Dimension | DIN 603Current | ISO 8677Superseded by DIN 603 |
|---|---|---|
| Body Diameter (max)dₛ (mm) | 16 | 16.7 |
| Body Diameter (min)dₛ (mm) | 15.3 | — |
| Head Diameter (max)dk (mm) | 38.8 | 38 |
| Head Diameter (min)dk (mm) | 37.2 | 36.4 |
| Head Height (max)k (mm) | 8.95 | 8.9 |
| Head Height (min)k (mm) | 8.05 | 8 |
| Corner Distanceg (mm) | — | 19.9 |
| Radius (max)r (mm) | — | 1.2 |
8 more dimensions — identical in DIN 603 and ISO 8677
| Thread PitchP (mm) | 2 | 2 |
|---|---|---|
| Square Neck Width (max)v (mm) | 16.7 | 16.7 |
| Square Neck Width (min)v (mm) | 15.3 | 15.3 |
| Square Neck Height (max)f (mm) | 12.9 | 12.9 |
| Square Neck Height (min)f (mm) | 11.1 | 11.1 |
| Thread Length (L <= 125)b (L ≤ 125) (mm) | 38 | 38 |
| Thread Length (125 < L <= 200)b (125 < L ≤ 200) (mm) | 44 | 44 |
| Thread Length (L > 200)b (L > 200) (mm) | 57 | 57 |
Plating adds thickness — state the finish on the order.
Holes for this thread
ISO 273 · ISO 2306| Hole | Diameter |
|---|---|
| Clearance hole | 17 / 17.5 / 18.5 mm |
| Tap drill | 14 mm |
Other lengths in M16
All sizes →| Size | kg per 1 000 pieces | |
|---|---|---|
| M16×20 | 29.36 | this page |
| M16×25 | 36.70 | open |
| M16×30 | 44.04 | open |
| M16×35 | 51.37 | open |
| M16×40 | 58.71 | open |
M16 x 25M16 x 30M16 x 35M16 x 40M16 x 45M16 x 50M16 x 55M16 x 60M16 x 70M16 x 80M16 x 90M16 x 100M16 x 110M16 x 120M16 x 130M16 x 140M16 x 150
