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HM Type Carriage Bolts
Specification
| Designation part number system | |||||
| HW | 1 | 2 | 3 | 4 | |
| Name of Fitting | Thread Size | Length | Material | ||
| 1 Name of Fittings / Code | |
| Name of Fittings | Code |
| Carriage bolt | HM |
| 2 Thread Size/ Code 3 Length Size / Code |
||||||||||||
| Inch | ||||||||||||
| Length | 1/2" | 5/8" | 3/4" | 7/8" | 1" | 1-1/4" | 1-1/2" | 1-3/4" | 2" | |||
| Thread Size | Code | 04 | 05 | 06 | 07 | 1 | 12 | 15 | 16 | 2 | ||
| 1/4" | 02 | 0204 | 0205 | 0206 | 0207 | 021 | 0212 | 0215 | 0216 | 022 | ||
| 5/16" | 025 | 02504 | 02505 | 02506 | 02507 | 0251 | 02512 | 02515 | 02516 | 0252 | ||
| 3/8" | 03 | 0306 | 0307 | 031 | 0312 | 0315 | 0316 | 032 | ||||
| 1/2" | 04 | 0406 | 0407 | 041 | 0412 | 0415 | 0416 | 042 | ||||
| Length | 2-1/2" | 2-3/4" | 3" | 3-1/4" | 3-1/2" | 4" | 4-1/2" | 5" | 5-1/2" | |||
| Thread Size | Code | 25 | 26 | 3 | 32 | 35 | 4 | 45 | 5 | 55 | ||
| 1/4" | 02 | 0225 | 0226 | 023 | 0232 | 0235 | 024 | 0245 | 025 | 0255 | ||
| 5/16" | 025 | 02525 | 02526 | 0253 | 02532 | 02535 | 0254 | 02545 | 0255 | 02555 | ||
| 3/8" | 03 | 0325 | 0326 | 033 | 0332 | 0335 | 034 | 0345 | 035 | 0355 | ||
| 1/2" | 04 | 0425 | 0426 | 043 | 0432 | 0435 | 044 | 0445 | 045 | 0455 | ||
| 4 Material / Code | |||||
| Material | Code | ||||
| Steel / Zinc Electroplated | E | ||||
| Steel / Hot Dip Galvanized | H | ||||
| SUS304 | S4 | ||||
| Example | |||||
| HW | HM | 025 | 15 | S4 | |
| Name of Fitting | Thread Size | Length | Material | ||
| Carriage bolt | 5/16" | 1-1/2"L | SUS304 | ||
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