Carriage bolts, also known as coach bolts, are heavy-duty fasteners with a round head and a square neck under the head. The square portion grips into the part being fixed, preventing the bolt from turning when the nut is tightened.
Carriage Bolts Dimensions & Specifications
Carriage bolts come in a variety of materials and coatings such as stainless steel, galvanized steel, and zinc-plated variants. Their key specifications include:
Diameter: Typically ranges from 1/4” to 1”
Length: Varies from 1/2” to over 12”
Thread Type: UNC (Coarse) is most common
Standards: Available in DIN 603, ASTM A307, and other global standards
Carriage Bolts Weight Chart
The weight Chart of the Carriage Bolt Fastener in mm and kg is mentioned in the table below.
| l\d | M5 | M6 | M8 | M10 | M12 | M16 | M20 |
|---|---|---|---|---|---|---|---|
| 16 | 4 | 6.9 | |||||
| 20 | 4.5 | 7.6 | 13.8 | 22.7 | |||
| 25 | 5.1 | 8.5 | 15.4 | 25.2 | |||
| 30 | 5.9 | 9.6 | 17 | 27.7 | 45.7 | ||
| 35 | 6.7 | 10.7 | 19 | 30.2 | 49.4 | ||
| 40 | 7.5 | 11.8 | 21 | 32.7 | 53.1 | ||
| 45 | 8.3 | 12.9 | 23 | 35.8 | 56.8 | ||
| 50 | 9.1 | 14 | 25 | 38.9 | 61.2 | 119 | |
| 55 | 9.9 | 15.1 | 26.9 | 42 | 65.6 | 126 | |
| 60 | 10.7 | 16.2 | 28.9 | 45.1 | 70 | 133 | |
| 65 | 11.5 | 17.3 | 30.9 | 48.2 | 74.4 | 141 | |
| 70 | 12.3 | 18.4 | 32.9 | 51.3 | 78.8 | 149 | 247 |
| 80 | 13.9 | 20.6 | 36.8 | 57.5 | 87 | 165 | 272 |
| 90 | 22.8 | 40.8 | 63.7 | 96 | 181 | 297 | |
| 100 | 25 | 44.8 | 69.9 | 105 | 197 | 322 | |
| 110 | 27.2 | 48.8 | 76.1 | 114 | 213 | 347 | |
| 120 | 29.4 | 52.8 | 82.3 | 123 | 229 | 372 | |
| 130 | 31.6 | 56.8 | 88.5 | 132 | 245 | 397 | |
| 140 | 32.8 | 60.8 | 95 | 141 | 261 | 422 | |
| 150 | 35 | 64.8 | 101 | 150 | 277 | 447 | |
| 160 | 107 | 159 | 293 | 497 | |||
| 180 | 119 | 177 | 325 | 547 | |||
| 200 | 131 | 195 | 357 | 597 |