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250
Brown & Sharpe Mfg. Co.
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Approximate Lead | Gear on Worm | 1st On Stud | 2nd On Stud | Gear on Screw | Angle to Set Spiral Head | Angle to Set Vertical Att. | Gear on Worm | 1st On Stud | 2nd On Stud | Gear on Screw | Angle to Set Spiral Head | Angle to Set Vertical Att. | Gear on Worm | 1st On Stud | 2nd On Stud | Gear on Screw | Angle to Set Spiral Head | Angle to Set Vertical Att. | Gear on Worm | 1st On Stud | 2nd On Stud | Gear on Screw | Angle to Set Spiral Head | Angle to Set Vertical Att. | Gear on Worm | 1st On Stud | 2nd On Stud | Gear on Screw | Angle to Set Spiral Head | Angle to Set Vertical Att. | Gear on Worm | 1st On Stud | 2nd On Stud | Gear on Screw | Angle to Set Spiral Head | Angle to Set Vertical Att. | Gear on Worm | 1st On Stud | 2nd On Stud | Gear on Screw | Angle to Set Spiral Head | Angle to Set Vertical Att. | Gear on Worm | 1st On Stud | 2nd On Stud | Gear on Screw | Angle to Set Spiral Head | Angle to Set Vertical Att. | ||||||||||||||||
24 | 88 | 24 | 100 | degrees | 24 | 88 | 28 | 100 | degrees | 24 | 88 | 32 | 100 | degrees | 24 | 72 | 28 | 100 | degrees | 24 | 72 | 32 | 88 | degrees | 24 | 72 | 40 | 100 | degrees | 24 | 48 | 28 | 100 | degrees | 24 | 64 | 40 | 100 | degrees | |||||||||||||||||||||||||
.000-05 | .0029 | ¼ | 89 | ¾ | .0034 | ¼ | 89 | ¾ | .0039 | ¼ | 89 | ½ | .0047 | ¼ | 89 | ¾ | ||||||||||||||||||||||||||||||||||||||||||||||||
.001-10 | .0088 | ¾ | 89 | ¼ | .0068 | ½ | 89 | ½ | .0078 | ½ | 89 | ½ | .0095 | ½ | 89 | ½ | .0054 | ¼ | 89 | ¾ | .0058 | ¼ | 89 | ¾ | .0061 | ¼ | 89 | ¾ | .0065 | ¼ | 89 | ¾ | ||||||||||||||||||||||||||||||||
.010-15 | .0117 | 1 | 89 | .0102 | ¾ | 89 | ¼ | .0117 | ¾ | 89 | ¼ | .0142 | ¾ | 89 | ¼ | .0108 | ½ | 89 | ½ | .0116 | ½ | 89 | ½ | .0122 | ½ | 89 | ½ | .131 | 89 | ½ | ||||||||||||||||||||||||||||||||||
.015-20 | .0175 | 1 | ½ | 88 | ½ | .0170 | 1 | ¼ | 88 | ¾ | .0189 | 1 | 89 | .0162 | ¾ | 89 | ¼ | .0174 | ¾ | 89 | ¼ | .0183 | ¾ | 89 | ¼ | .0196 | ¾ | 89 | ¼ | |||||||||||||||||||||||||||||||||||
.020-25 | .0234 | 2 | 88 | .0205 | 1 | ½ | 88 | ½ | .0234 | 1 | ½ | 88 | ½ | .0237 | 1 | ¼ | 88 | ¼ | .0216 | 1 | 89 | .0233 | 1 | 89 | .0244 | 1 | 89 | |||||||||||||||||||||||||||||||||||||
0.025-30 | .0263 | 2 | ¼ | 87 | ¾ | .0273 | 2 | 88 | .0273 | 1 | ¾ | 88 | ¼ | .0284 | 1 | ½ | 88 | ½ | .0271 | 1 | ¼ | 88 | ¾ | .0291 | 1 | ¼ | 88 | ¾ | ||||||||||||||||||||||||||||||||||||
0.030-35 | .0321 | 2 | ¾ | 87 | ¼ | .0341 | 2 | ½ | 87 | ½ | .0312 | 2 | 88 | .0331 | 1 | ¾ | 88 | ¾ | .0327 | 1 | ½ | 88 | ½ | .0349 | 1 | ½ | 88 | ½ | .0305 | 1 | ¼ | 88 | ¾ | .0327 | 1 | ¼ | 88 | ¾ | ||||||||||||||||||||||||||
0.35-40 | 0.351 | 3 | 87 | 0.375 | 23 | ¾ | 87 | ¼ | 0.390 | 2 | ½ | 87 | ½ | .0379 | 2 | 89 | .0379 | 1 | ¾ | 88 | ¼ | |||||||||||||||||||||||||||||||||||||||||||
0.40-45 | .0409 | 3 | ½ | 86 | ½ | .0443 | 3 | ¼ | 86 | ¾ | .0428 | 2 | ¾ | 87 | ¼ | .0426 | 2 | ¼ | 87 | ¾ | .0433 | 2 | 88 | .0407 | 1 | ¾ | 88 | ¼ | .0428 | 1 | ¾ | 88 | ||||||||||||||||||||||||||||||||
.045-50 | .0497 | 4 | ¼ | 85 | ¾ | .0477 | 3 | ½ | 86 | ½ | .0467 | 3 | 87 | .0473 | 2 | ½ | 87 | ½ | .0487 | 2 | ¼ | 87 | ¾ | .0465 | 2 | 88 | .0489 | 2 | 88 | .0458 | 1 | ¾ | 88 | ¼ |