3020-00-385-7730 GEAR,BEVEL Index 5315-00-385-7732 KEY,MACHINE

National Stock Number:
3040-00-385-7731

Federal Supply Class:
3040

National Item Identification Number:
003857731

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:
718699519204ARMY, UNITED STATES DEPARTMENT OF THE


Techincal Specification:
END SIMILARITYNOT IDENTICALNOT IDENTICAL
FSC APPLICATION DATALAUNCHER,762-MM ROCKET,TRUCK MOUNTED,XM289LAUNCHER,762-MM ROCKET,TRUCK MOUNTED,XM289
OVERALL LENGTH10.563 INCHES NOMINAL10.563 INCHES NOMINAL
MATERIALSTEELSTEEL
SHAFT HARDNESS RATING33.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM LOCATION NOT OTHERWISE SPECIFIED35.0 ROCKWELL C MAXIMUM LOCATION NOT OTHERWISE SPECIFIED
SHAFT LOCATIONBOTH ENDS OF WORMBOTH ENDS OF WORM
SPECIAL FEATURESBOTH ENDS CHAMFERED 0.0625 BY 45 DEG AND THREAD SURFACE FINISH 32AABOTH ENDS CHAMFERED 0.0625 BY 45 DEG AND THREAD SURFACE FINISH 32AA
UNTHREADED SECTION KEYWAY DEPTH0.136 INCHES MINIMUM AND 0.136 INCHES MINIMUM AND 0.139 INCHES MAXIMUM SECOND END SECOND PORTION0.139 INCHES MAXIMUM SECOND END SECOND PORTION
UNTHREADED SECTION KEYWAY WIDTH0.2465 INCHES MINIMUM AND 0.2465 INCHES MINIMUM AND 0.2485 INCHES MAXIMUM SECOND END SECOND PORTION0.2485 INCHES MAXIMUM SECOND END SECOND PORTION
WORM BODY LENGTH6.376 INCHES NOMINAL6.376 INCHES NOMINAL
WORM HELIX ANGLE4 DEG 34 MIN.4 DEG 34 MIN.
WORM OUTSIDE DIAMETER2.8866 INCHES NOMINAL2.8866 INCHES NOMINAL
WORM PITCH DIAMETER2.4886 INCHES NOMINAL2.4886 INCHES NOMINAL
WORM PRESSURE ANGLE IN DEG14.50014.500
WORM THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
WORM THREAD LEAD0.6253 INCHES NOMINAL0.6253 INCHES NOMINAL
WORM THREAD QUANTITY11
WORM THREAD SECTION LENGTH3.750 INCHES NOMINAL3.750 INCHES NOMINAL
STRAIGHT UNTHREADED LENGTH1.187 INCHES NOMINAL SECOND END SECOND PORTION1.187 INCHES NOMINAL SECOND END SECOND PORTION
STRAIGHT UNTHREADED LENGTH1.312 INCHES NOMINAL FIRST END FIRST PORTION1.312 INCHES NOMINAL FIRST END FIRST PORTION
STRAIGHT UNTHREADED LENGTH1.687 INCHES NOMINAL SECOND END FIRST PORTION1.687 INCHES NOMINAL SECOND END FIRST PORTION
STRAIGHT UNTHREADED SECTION DIAMETER0.998 INCHES MINIMUM AND 0.998 INCHES MINIMUM AND 1.000 INCHES MAXIMUM SECOND END SECOND PORTION1.000 INCHES MAXIMUM SECOND END SECOND PORTION
STRAIGHT UNTHREADED SECTION DIAMETER1.3760 INCHES MINIMUM AND 1.3760 INCHES MINIMUM AND 1.3765 INCHES MAXIMUM FIRST END FIRST PORTION1.3765 INCHES MAXIMUM FIRST END FIRST PORTION
STRAIGHT UNTHREADED SECTION DIAMETER1.3760 INCHES MINIMUM AND 1.3760 INCHES MINIMUM AND 1.3765 INCHES MAXIMUM SECOND END FIRST PORTION1.3765 INCHES MAXIMUM SECOND END FIRST PORTION
SURFACE TREATMENTOXIDEOXIDE
TEETH HARDNESS RATING33.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM35.0 ROCKWELL C MAXIMUM


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