6520-01-091-1981 FLOSS,WAXED,DENTAL Index 5360-01-091-1984 SPRING,HELICAL,COMPRESSION

National Stock Number:
3040-01-091-1982

Federal Supply Class:
3040

National Item Identification Number:
010911982

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:
7954478-219207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
END SIMILARITYNOT IDENTICAL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-13048, 8642, 4140 OR 8740 MIL SPEC ALL MATERIAL RESPONSES
MATERIALSTEEL COMP 4140 OR STEEL COMP 8642 OR STEEL COMP 8740
OVERALL LENGTH17.594 INCHES NOMINAL
SHAFT HARDNESS RATING17.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
SHAFT LOCATIONBOTH ENDS OF WORM
SPECIAL FEATURESINTERNALLY THD ON 5TH PORTION 1ST END 0.875 IN. DEEP;0.500-20 THD;UNF,CLASS 2B
STRAIGHT UNTHREADED LENGTH0.125 INCHES NOMINAL ALL THREADED PORTIONS
STRAIGHT UNTHREADED LENGTH0.125 INCHES NOMINAL TERMINAL BOX
STRAIGHT UNTHREADED LENGTH0.875 INCHES NOMINAL SECOND SHAFT
STRAIGHT UNTHREADED LENGTH0.875 INCHES NOMINAL D ENTRANCE
STRAIGHT UNTHREADED LENGTH0.875 INCHES NOMINAL HUB CAP
STRAIGHT UNTHREADED LENGTH1.031 INCHES NOMINAL THREADS
STRAIGHT UNTHREADED LENGTH1.125 INCHES NOMINAL INNER BUSHING
STRAIGHT UNTHREADED LENGTH1.438 INCHES NOMINAL CONCENTRIC HOLE
STRAIGHT UNTHREADED LENGTH3.656 INCHES NOMINAL FIRST MORTISE
STRAIGHT UNTHREADED LENGTH3.656 INCHES NOMINAL RECEPTACLE PLATE
STRAIGHT UNTHREADED SECTION DIAMETER1.500 INCHES NOMINAL HUB CAP
STRAIGHT UNTHREADED SECTION DIAMETER1.500 INCHES NOMINAL CONCENTRIC HOLE
STRAIGHT UNTHREADED SECTION DIAMETER1.750 INCHES NOMINAL ALL THREADED PORTIONS
STRAIGHT UNTHREADED SECTION DIAMETER1.750 INCHES NOMINAL TERMINAL BOX
STRAIGHT UNTHREADED SECTION DIAMETER1.767 INCHES NOMINAL INNER BUSHING
STRAIGHT UNTHREADED SECTION DIAMETER1.767 INCHES NOMINAL THREADS
STRAIGHT UNTHREADED SECTION DIAMETER1.771 INCHES NOMINAL D ENTRANCE
STRAIGHT UNTHREADED SECTION DIAMETER1.771 INCHES NOMINAL SECOND SHAFT
STRAIGHT UNTHREADED SECTION DIAMETER2.156 INCHES NOMINAL FIRST MORTISE
STRAIGHT UNTHREADED SECTION DIAMETER2.156 INCHES NOMINAL RECEPTACLE PLATE
TEETH HARDNESS RATING58.0 ROCKWELL C MINIMUM AND 63.0 ROCKWELL C MAXIMUM
UNTHREADED SECTION KEYWAY DEPTH0.218 INCHES NOMINAL HUB CAP
UNTHREADED SECTION KEYWAY WIDTH0.3720 INCHES NOMINAL HUB CAP
UNTHREADED SECTION PIN HOLE DIAMETER0.5050 INCHES MINIMUM AND 0.5150 INCHES MAXIMUM THREADS
WORM BODY TAPERED BEARING SURFACE ENDNOT PROVIDED
WORM HELIX ANGLE4 DEG 57 MIN
WORM OUTSIDE DIAMETER3.774 INCHES MINIMUM AND 3.776 INCHES MAXIMUM
WORM PITCH DIAMETER3.216 INCHES NOMINAL
WORM PRESSURE ANGLE IN DEG27.500
WORM THREAD DIRECTIONLEFT-HAND
WORM THREAD LEAD0.875 INCHES NOMINAL
WORM THREAD QUANTITY1
WORM THREAD SECTION LENGTH3.750 INCHES NOMINAL


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