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THREAD PITCHES |
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Approximate Threads Per Inch for Metric Screws, Bolts and Nuts |
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DIAMETER IN MM |
3 | 4 | 5 | 6 | 7 | 8 | 10 | 12 | 14 | 16 |
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DIAMETER IN INCHES |
.118 | .157 | .197 | .236 | .276 | .315 | .394 | .472 | .551 | .630 |
| STANDARD PITCH MM | .5 | .7 | .8 | 1.0 | 1.0 | 1.25 | 1.5 | 1.75 | 2.0 | 2.0 |
| APPROX THREADS PER INCH | 51 | 36 | 32 | 25 | 25 | 20 | 17 | 14 | 12 | 12 |
| FINE PITCH MM | 1.0 | 1.25 | 1.5 | 1.5 | 1.5 | |||||
| APPROX THREADS PER INCH | 25 | 20 | 17 | 17 | 17 | |||||
| EXTRA FINE PITCH MM | 1.0 | 1.25 | 1.25 | 1.25 | ||||||
| APPROX THREADS PER INCH | 25 | 20 | 20 | 20 | ||||||
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METRIC DIN NUMBERS |
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| 931 | Coarse Thread Cap Screws - Partially Threaded | |||||||||
| 933 | Coarse Thread Cap Screws - Fully Threaded | |||||||||
| 960 | Fine Thread Cap Screws - Partially Threaded | |||||||||
| 961 | Fine Thread Cap Screws - Fully Threaded | |||||||||
| 84 | Cheese (Fillister) Machine Screws Slotted | |||||||||
| 85 | Panhead Machine Screws Slotted | |||||||||
| 963 | Flathead Machine Screws Slotted | |||||||||
| 964 | Ovalhead Machine Screws Slotted | |||||||||
| 966 | Ovalhead Machine Screws Phillips | |||||||||
| 7985 | Fillister Head Machine Screws Phillips | |||||||||
| 125 | Flat Washers | |||||||||
| 127 | Split Lock Washers | |||||||||
| 6797 | Tooth Lock Washers | |||||||||
| 936 | Jam Nuts | |||||||||
| 934 | Finished Hex Nuts | |||||||||
| 985 | Nylon Stop Nuts | |||||||||
