info@organametrisis.gr
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BSW English Inch 55°
| BSW | TPI | Pitch P mm | Drill mm | d3 Minor Diameter mm | d=D Major Diameter mm |
| 1/16" | 60 | 0.423 | 1.15 | 1.05 | 1,587 |
| 3/32" | 48 | 0.529 | 1.90 | 1,703 | 2,381 |
| 1/8" | 40 | 0.635 | 2.50 | 2,362 | 3,175 |
| 5/32" | 32 | 0.793 | 3.20 | 2,952 | 3,969 |
| 3/16" | 24 | 1,058 | 3.70 | 3,407 | 4,762 |
| 7/32" | 24 | 1,058 | 4.50 | 4.201 | 5,556 |
| 1/4" | 20 | 1,270 | 5.10 | 4,724 | 6,350 |
| 5/16" | 18 | 1,411 | 6.50 | 6.131 | 7,938 |
| 3/8" | 16 | 1,588 | 7.90 | 7,492 | 9,525 |
| 7/16" | 14 | 1,814 | 9.20 | 8,789 | 11.113 |
| 1/2" | 12 | 2.117 | 10.40 | 9.99 | 12,700 |
| 9/16" | 12 | 2.117 | 11.89 | 11.58 | 14,290 |
| 5/8" | 11 | 2.309 | 13.40 | 12,918 | 15,876 |
| 3/4" | 10 | 2,540 | 16.25 | 15,798 | 19,051 |
| 7/8" | 9 | 2,822 | 19.25 | 18,611 | 22,226 |
| 1" | 8 | 3,175 | 22.00 | 21,335 | 25,400 |
| 1 1/8" | 7 | 3,629 | 24.50 | 23,929 | 28,576 |
| 1 1/4" | 7 | 3,629 | 27.25 | 27.104 | 31,751 |
| 1 3/8" | 6 | 4.233 | 30.25 | 29,505 | 34,926 |
| 1 1/2" | 6 | 4.233 | 33.50 | 32.68 | 38,100 |
| 1 5/8" | 5 | 5,080 | 35.50 | 34,771 | 41,277 |
| 1 3/4" | 5 | 5,080 | 38.50 | 37,946 | 44,452 |
| 1 7/8" | 4 1/2 | 5,645 | 41.25 | 40,398 | 47,627 |
| 2" | 4 1/2 | 5,645 | 44.50 | 43,573 | 50,802 |
| 2 1/4" | 4 | 6,350 | 50.00 | 49.02 | 57,152 |
| 2 1/2" | 4 | 6,350 | 56.00 | 55.37 | 63,502 |
| 2 3/4" | 3 1/2 | 7,257 | 61.50 | 60,558 | 69,853 |
| 3" | 3 1/2 | 7,257 | 68.00 | 66,909 | 76.203 |
| 3 1/4" | 3 1/4 | 7,816 | 73.75 | 72,544 | 82,553 |
| 3 1/2" | 3 1/4 | 7,816 | 80.00 | 78,894 | 88,903 |
| 3 3/4" | 3 | 8,467 | 85.50 | 84.41 | 95,254 |
| 4" | 3 | 8,467 | 92.00 | 90.76 | 101,604 |
| 4 1/4" | 2 7/8 | 8,835 | 98.00 | 96,639 | 107,954 |
| 4 1/2" | 2 7/8 | 8,835 | 104.20 | 102.99 | 114.304 |
| 4 3/4" | 2 3/4 | 9,237 | 110 | 108,625 | 120,665 |
| 5" | 2 3/4 | 9,237 | 116.50 | 115,176 | 127.005 |
| 5 1/4" | 2 5/8 | 9,677 | 122.50 | 120,963 | 133,355 |
| 5 1/2" | 2 5/8 | 9,677 | 128.50 | 127,313 | 139,705 |
| 5 3/4" | 2 1/2 | 10,160 | 134.50 | 133,043 | 146,055 |
| 6" | 2 1/2 | 10,160 | 141.00 | 139,394 | 152,406 |
