6520-01-057-6543 FORCEPS,TOOTH EXTRACTING Index 3040-01-057-6546 WORM SHAFT

National Stock Number:
3040-01-057-6545

Federal Supply Class:
3040

National Item Identification Number:
010576545

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:
1174174119200US ARMY ARDEC RDECOM


Techincal Specification:
BEARING DIAMETER0.562 INCHES NOMINAL
BEARING QUANTITY1
BEARING TYPEBALL
END SIMILARITYNOT IDENTICAL
MATERIALSTEEL CORROSION RESISTING
OVERALL LENGTH2.850 INCHES MINIMUM AND 2.870 INCHES MAXIMUM
SHAFT HARDNESS RATING28.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM
SHAFT LOCATIONBOTH ENDS OF WORM
STRAIGHT UNTHREADED LENGTH0.060 INCHES NOMINAL CONCENTRIC HOLE
STRAIGHT UNTHREADED LENGTH0.120 INCHES NOMINAL D ENTRANCE
STRAIGHT UNTHREADED LENGTH0.190 INCHES NOMINAL THREADS
STRAIGHT UNTHREADED LENGTH0.250 INCHES NOMINAL ALL THREADED PORTIONS
STRAIGHT UNTHREADED LENGTH0.375 INCHES NOMINAL FIRST MORTISE
STRAIGHT UNTHREADED LENGTH1.230 INCHES NOMINAL RECEPTACLE PLATE
STRAIGHT UNTHREADED SECTION DIAMETER0.187 INCHES NOMINAL RECEPTACLE PLATE
STRAIGHT UNTHREADED SECTION DIAMETER0.188 INCHES NOMINAL THREADS
STRAIGHT UNTHREADED SECTION DIAMETER0.190 INCHES NOMINAL ALL THREADED PORTIONS
STRAIGHT UNTHREADED SECTION DIAMETER0.220 INCHES NOMINAL CONCENTRIC HOLE
STRAIGHT UNTHREADED SECTION DIAMETER0.220 INCHES NOMINAL FIRST MORTISE
STRAIGHT UNTHREADED SECTION DIAMETER0.268 INCHES NOMINAL D ENTRANCE
SURFACE TREATMENTPASSIVATE
TEETH HARDNESS RATING28.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM
UNTHREADED SECTION KEYWAY DEPTH0.034 INCHES NOMINAL D ENTRANCE
UNTHREADED SECTION KEYWAY WIDTH0.0700 INCHES NOMINAL D ENTRANCE
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 THREAD DIRECTIONLEFT-HAND
WORM PRESSURE ANGLE IN DEG14.500
WORM THREAD LEAD0.083 INCHES NOMINAL
WORM THREAD QUANTITY7
WORM THREAD SECTION LENGTH0.605 INCHES MINIMUM AND 0.625 INCHES MAXIMUM


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