G5/8 thread: 22.91 mm × 14 TPI
Threads › G5/8
G5/8 is a BSP parallel (G) thread: 22.91 mm major diameter, 14 TPI (1.814 mm pitch), 55° form. Tap drill 21 mm.
| Standard | BSP parallel (G) |
|---|---|
| Major diameter | 22.911 mm (0.902″) |
| Pitch | 14 TPI (1.814 mm) |
| Thread angle | 55° |
| Minor diameter, bolt | 20.59 mm |
| Minor diameter, nut | 20.59 mm |
| Tap drill | 21 mm |
| Usual class | A bolt |
Minor diameters worked out from the basic profile: major Ø − 1.28065 × pitch.
Open G5/8 in BenchsmithAdd to order list
Measure it
Bolt: Measure across the crests of the bolt with the caliper jaws. Worn bolts read 0.1 to 0.3 under.
Nut or tapped hole: Measure across the tops of the threads inside the nut or hole with the inside jaws. That is the minor Ø. Worn or oversize holes read a little over.
Close in size, won't mate
- 7/8-9 UNCØ22.23 mm, 9 TPI
- 7/8-14 UNFØ22.23 mm, 14 TPI
- 7/8 BSWØ22.23 mm, 9 TPI
- 7/8-6 ACMEØ22.23 mm, 6 TPI
- M22Ø22 mm, 2.5 mm pitch
- M22×1.5Ø22 mm, 1.5 mm pitch
One size up or down
Got a bolt and no idea what it is? Measure the outside Ø and type it into Benchsmith → Find → Thread.