3040-00-125-8782 SHAFT,SHOULDERED Index 3040-00-125-8784 SPIDER AND GEAR ASSEMBLY

National Stock Number:
3040-00-125-8783

Federal Supply Class:
3040

National Item Identification Number:
001258783

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:
858756419200US ARMY ARDEC RDECOM


Techincal Specification:
END SIMILARITYNOT IDENTICAL
FSC APPLICATION DATAMOUNT,TELESCOPE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763, CLASS 303, 303SE OR 304 CONDITION A FED SPEC ALL MATERIAL RESPONSES
MATERIALSTEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304
OVERALL LENGTH6.375 INCHES NOMINAL
SCREW THREAD SERIES DESIGNATORUNF BOTH ENDS
SHAFT HARDNESS RATING33.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
SHAFT LOCATIONBOTH ENDS OF WORM
SHAFT THREAD DIRECTIONRIGHT-HAND CONCENTRIC HOLE
STRAIGHT UNTHREADED LENGTH0.047 INCHES MINIMUM TERMINAL BOX
STRAIGHT UNTHREADED LENGTH0.047 INCHES MINIMUM THREADS
STRAIGHT UNTHREADED LENGTH0.047 INCHES MINIMUM ALL THREADED PORTIONS
STRAIGHT UNTHREADED LENGTH0.047 INCHES MINIMUM STEAM INLET
STRAIGHT UNTHREADED LENGTH0.062 INCHES MAXIMUM AXIALLY AT EACH END
STRAIGHT UNTHREADED LENGTH0.062 INCHES MAXIMUM BACK LINING
STRAIGHT UNTHREADED LENGTH0.062 INCHES MAXIMUM BOSS
STRAIGHT UNTHREADED LENGTH0.062 INCHES MAXIMUM FIRST STEP
STRAIGHT UNTHREADED LENGTH0.263 INCHES NOMINAL FIRST MORTISE
STRAIGHT UNTHREADED LENGTH0.583 INCHES NOMINAL D ENTRANCE
STRAIGHT UNTHREADED LENGTH0.910 INCHES MAXIMUM SINGLE SHAFT
STRAIGHT UNTHREADED LENGTH0.900 INCHES MINIMUM SECOND SHAFT
STRAIGHT UNTHREADED LENGTH1.198 INCHES NOMINAL FLOOR FRAMING
STRAIGHT UNTHREADED LENGTH1.410 INCHES NOMINAL RECEPTACLE PLATE
STRAIGHT UNTHREADED SECTION DIAMETER0.339 INCHES MINIMUM STEAM INLET
STRAIGHT UNTHREADED SECTION DIAMETER0.354 INCHES MAXIMUM BACK LINING
STRAIGHT UNTHREADED SECTION DIAMETER0.357 INCHES MINIMUM THREADS
STRAIGHT UNTHREADED SECTION DIAMETER0.367 INCHES MAXIMUM BOSS
STRAIGHT UNTHREADED SECTION DIAMETER0.374 INCHES NOMINAL FLOOR FRAMING
STRAIGHT UNTHREADED SECTION DIAMETER0.416 INCHES MAXIMUM AXIALLY AT EACH END
STRAIGHT UNTHREADED SECTION DIAMETER0.417 INCHES MAXIMUM FIRST STEP
STRAIGHT UNTHREADED SECTION DIAMETER0.401 INCHES MINIMUM TERMINAL BOX
STRAIGHT UNTHREADED SECTION DIAMETER0.402 INCHES MINIMUM ALL THREADED PORTIONS
STRAIGHT UNTHREADED SECTION DIAMETER0.436 INCHES MINIMUM SECOND SHAFT
STRAIGHT UNTHREADED SECTION DIAMETER0.437 INCHES MAXIMUM SINGLE SHAFT
STRAIGHT UNTHREADED SECTION DIAMETER0.437 INCHES NOMINAL D ENTRANCE
STRAIGHT UNTHREADED SECTION DIAMETER0.440 INCHES MINIMUM FIRST MORTISE
STRAIGHT UNTHREADED SECTION DIAMETER0.450 INCHES MAXIMUM SECOND MORTISE
STRAIGHT UNTHREADED SECTION DIAMETER0.530 INCHES MINIMUM RECEPTACLE PLATE
STRAIGHT UNTHREADED SECTION DIAMETER0.540 INCHES MAXIMUM SEPARATING PIN
SURFACE TREATMENTPASSIVATE
TEETH HARDNESS RATING33.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
THREAD LENGTH0.323 INCHES NOMINAL CONCENTRIC HOLE
WORM BODY LENGTH3.173 INCHES NOMINAL
WORM BODY TAPERED BEARING SURFACE ENDNOT PROVIDED
WORM HELIX ANGLE5DEG44MIN
WORM OUTSIDE DIAMETER0.932 INCHES MINIMUM AND 0.937 INCHES MAXIMUM
WORM PITCH DIAMETER0.776 INCHES MINIMUM AND 0.778 INCHES MAXIMUM
WORM THREAD DIRECTIONLEFT-HAND
WORM PRESSURE ANGLE IN DEG14.500
WORM THREAD LEAD0.245 INCHES NOMINAL
WORM THREAD QUANTITY1
WORM THREAD SECTION LENGTH1.490 INCHES MINIMUM AND 1.500 INCHES MAXIMUM


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