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National Stock Number:
3040-00-563-3837
Federal Supply Class:
3040
National Item Identification Number:
005633837
Description:
WORM SHAFT
Detail:
A DRIVE SHAFT HAVING HELICAL THREAD(S) ON A PORTION OF ITS OUTER SURFACE, MACHINED BEARING SURFACE(S) AND FACILITIES FOR DRIVING (OTHER THAN A HUB) ON ONE OR BOTH ENDS OF SHAFT. DESIGNED TO MATE WITH A CAM, GEAR SECTOR, WORM WHEEL, ETC. INCLUDES ITEMS WITH BEARINGS. EXCLUDES ITEMS HAVING MORE THAN ONE WORM COMPLEMENT OF HELICAL THREADS, ITEMS WITH A SEPARATE COMPLEMENT OF GEAR TEETH, AND GEAR, WORM.
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Manufacturer Information:
| 8171744 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| MATERIAL | STEEL | | TEETH HARDNESS RATING | B SCALE,94 | | SHAFT HARDNESS RATING | B SCALE,94 | | SURFACE TREATMENT | PASSIVATE | | WORM THREAD QUANTITY | 1 | | WORM PRESSURE ANGLE IN DEG | 14.500 | | WORM THREAD LEAD | 0.0984 INCHES NOMINAL | | WORM THREAD DIRECTION | RIGHT-HAND | | WORM HELIX ANGLE | 85 DEG 55 MIN | | WORM OUTSIDE DIAMETER | 0.495 INCHES MINIMUM AND | | 0.501 INCHES MAXIMUM | | WORM PITCH DIAMETER | 0.4389 INCHES NOMINAL | | WORM THREAD SECTION LENGTH | 0.375 INCHES NOMINAL | | WORM BODY LENGTH | 0.375 INCHES NOMINAL | | WORM BODY TAPERED BEARING SURFACE END | NOT PROVIDED | | SHAFT LOCATION | ONE END OF WORM | | END SIMILARITY | NOT IDENTICAL | | STRAIGHT UNTHREADED LENGTH | 0.500 INCHES NOMINAL FIRST END, FIRST PORTION | | 0.500 INCHES NOMINAL FIRST END, SECOND PORTION | | 1.243 INCHES NOMINAL FIRST END, THIRD PORTION | | 1.1007 INCHES NOMINAL FIRST END, FOURTH PORTION | | STRAIGHT UNTHREADED SECTION DIAMETER | 0.345 INCHES NOMINAL FIRST END, FIRST PORTION | | 0.259 INCHES MINIMUM FIRST END, SECOND PORTION | | 0.263 INCHES MAXIMUM FIRST END, SECOND PORTION | | 0.270 INCHES NOMINAL FIRST END, THIRD PORTION | | 0.259 INCHES MINIMUM FIRST END, FOURTH PORTION | | 0.263 INCHES MAXIMUM FIRST END, FOURTH PORTION | | OVERALL LENGTH | 3.7187 INCHES NOMINAL | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 18876 | | DESIGN CONTROL REFERENCE | 8171744 |
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