3040-01-057-6545 WORM SHAFT Index 3920-01-057-6547 TRUCK,HAND

National Stock Number:
3040-01-057-6546

Federal Supply Class:
3040

National Item Identification Number:
010576546

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.


Manufacturer Information:
1174174019200US ARMY ARDEC RDECOM


Techincal Specification:
BEARING TYPEBALL
BEARING DIAMETER0.562 INCHES NOMINAL
BEARING QUANTITY1
END SIMILARITYNOT IDENTICAL
OVERALL LENGTH3.460 INCHES MINIMUM AND 3.470 INCHES MAXIMUM
MATERIALSTEEL CORROSION RESISTING
SHAFT HARDNESS RATING28.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM
SHAFT LOCATIONBOTH ENDS OF WORM
UNTHREADED SECTION KEYWAY DEPTH0.034 INCHES NOMINAL FIRST END, THIRD PORTION
UNTHREADED SECTION KEYWAY WIDTH0.0700 INCHES NOMINAL FIRST END, THIRD PORTION
WORM THREAD QUANTITY7
WORM THREAD SECTION LENGTH0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
WORM BODY TAPERED BEARING SURFACE ENDNOT PROVIDED
WORM HELIX ANGLE4 DEG 47 MIN
WORM OUTSIDE DIAMETER0.365 INCHES MINIMUM AND 0.370 INCHES MAXIMUM
WORM PITCH DIAMETER0.315 INCHES MINIMUM AND 0.317 INCHES MAXIMUM
WORM PRESSURE ANGLE IN DEG14.500
WORM THREAD LEAD0.083 INCHES NOMINAL
WORM THREAD DIRECTIONLEFT-HAND
STRAIGHT UNTHREADED LENGTH0.090 INCHES NOMINAL FIRST END, THIRD PORTION
STRAIGHT UNTHREADED LENGTH0.160 INCHES NOMINAL FIRST END, FIFTH PORTION
STRAIGHT UNTHREADED LENGTH0.190 INCHES NOMINAL FIRST END, FOURTH PORTION
STRAIGHT UNTHREADED LENGTH0.230 INCHES NOMINAL FIRST END, FIRST PORTION
STRAIGHT UNTHREADED LENGTH0.270 INCHES NOMINAL FIRST END, SECOND PORTION
STRAIGHT UNTHREADED LENGTH0.592 INCHES NOMINAL SECOND END, SECOND PORTION
STRAIGHT UNTHREADED LENGTH1.438 INCHES NOMINAL SECOND END, FIRST PORTION
STRAIGHT UNTHREADED SECTION DIAMETER0.187 INCHES NOMINAL FIRST END, FIRST PORTION
STRAIGHT UNTHREADED SECTION DIAMETER0.190 INCHES NOMINAL FIRST END, SECOND PORTION
STRAIGHT UNTHREADED SECTION DIAMETER0.188 INCHES NOMINAL FIRST END, FOURTH PORTION
STRAIGHT UNTHREADED SECTION DIAMETER0.220 INCHES NOMINAL FIRST END, FIFTH PORTION
STRAIGHT UNTHREADED SECTION DIAMETER0.220 INCHES NOMINAL SECOND END, SECOND PORTION
STRAIGHT UNTHREADED SECTION DIAMETER0.249 INCHES NOMINAL SECOND END, FIRST PORTION
STRAIGHT UNTHREADED SECTION DIAMETER0.268 INCHES NOMINAL FIRST END, THIRD PORTION
SURFACE TREATMENTPASSIVATE
TEETH HARDNESS RATING28.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM


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