G1/16 thread: 7.72 mm × 28 TPI
Threads › G1/16
G1/16 is a BSP parallel (G) thread: 7.72 mm major diameter, 28 TPI (0.907 mm pitch), 55° form. Tap drill 6.8 mm.
| Standard | BSP parallel (G) |
|---|---|
| Major diameter | 7.723 mm (0.304″) |
| Pitch | 28 TPI (0.907 mm) |
| Thread angle | 55° |
| Minor diameter, bolt | 6.56 mm |
| Minor diameter, nut | 6.56 mm |
| Tap drill | 6.8 mm |
| Usual class | A bolt |
Minor diameters worked out from the basic profile: major Ø − 1.28065 × pitch.
Open G1/16 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
- 5/16-18 UNCØ7.94 mm, 18 TPI
- 5/16-24 UNFØ7.94 mm, 24 TPI
- 5/16 BSWØ7.94 mm, 18 TPI
- 5/16-14 ACMEØ7.94 mm, 14 TPI
- M8Ø8 mm, 1.25 mm pitch
- M8×1Ø8 mm, 1 mm pitch
One size up or down
- G1/8Ø9.73 mm (up)
Got a bolt and no idea what it is? Measure the outside Ø and type it into Benchsmith → Find → Thread.