From £0.04 Excl. VAT
Partially threaded bolts have a portion of their length threaded while the remaining portion is unthreaded, also referred to as the shank. This design offers specific advantages in certain applications. The unthreaded section also contributes to the structural integrity of the bolt, enhancing its strength.
Part-thread bolts are commonly used in applications where a secure fastening is required, but there is a need for clearance or adjustability. The unthreaded section allows for easy alignment of components and reduces the risk of damaging threads during installation.
Diameter variations include: M4, M5, M6, M7, M8, M10, M12, M14, M16, M18, M20, M22, M24, M27, M30, M33, M36, M39, M42, M45, M48, M52
Finish options: Zinc, Zinc Yellow, Galvanised, Unplated Self Colour.
Stainless bolts available here
| Thread Length Calculator | ||
| Up to 125mm | 2 x thread diameter + 6mm | |
| 125 - 200mm | 2 x thread diameter + 12mm | |
| Over 200mm | 2 x thread diameter + 25mm | |
| Metric TPI Chart | |||||
| Diameter | TPI | Diameter | TPI | Diameter | TPI |
| M3 | 0.50 | M14 | 2.00 | M33 | 3.50 |
| M4 | 0.70 | M16 | 2.00 | M36 | 4.00 |
| M5 | 0.80 | M18 | 2.50 | M39 | 4.00 |
| M6 | 1.00 | M20 | 2.50 | M42 | 4.50 |
| M7 | 1.00 | M22 | 2.50 | M45 | 4.50 |
| M8 | 1.25 | M24 | 3.00 | M48 | 5.00 |
| M10 | 1.50 | M27 | 3.00 | M52 | 5.00 |
| M12 | 1.75 | M30 | 3.50 | M56 | 5.50 |
Please note images are for display purposes only, thread length will vary.
View our range of metric nuts here
View our range of metric washers here
More information on coatings here
