3040-00-074-8964, WORM SHAFT

National Stock Number:
3040-00-074-8964

Federal Supply Class:
3040

National Item Identification Number:
000748964

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:

8626338

19200

US ARMY ARDEC RDECOM

Techincal Specification:

END SIMILARITY	NOT IDENTICAL
OVERALL LENGTH	1.850 INCHES MINIMUM AND 1.870 INCHES MAXIMUM
MATERIAL	STEEL
SHAFT HARDNESS RATING	30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
SHAFT LOCATION	BOTH ENDS OF WORM
STRAIGHT UNTHREADED LENGTH	0.062 INCHES NOMINAL FIRST END SECOND PORTION
STRAIGHT UNTHREADED LENGTH	0.062 INCHES NOMINAL SECOND END SECOND PORTION
STRAIGHT UNTHREADED LENGTH	0.188 INCHES NOMINAL FIRST END FIRST PORTION
STRAIGHT UNTHREADED LENGTH	0.230 INCHES NOMINAL SECOND END THIRD PORTION
STRAIGHT UNTHREADED LENGTH	0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM FIRST END THIRD PORTION
STRAIGHT UNTHREADED LENGTH	0.390 INCHES NOMINAL SECOND END FIRST PORTION
STRAIGHT UNTHREADED SECTION DIAMETER	0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM FIRST END FIRST PORTION
STRAIGHT UNTHREADED SECTION DIAMETER	0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM SECOND END FIRST PORTION
STRAIGHT UNTHREADED SECTION DIAMETER	0.250 INCHES NOMINAL FIRST END THIRD PORTION
STRAIGHT UNTHREADED SECTION DIAMETER	0.330 INCHES MINIMUM AND 0.340 INCHES MAXIMUM FIRST END SECOND PORTION
STRAIGHT UNTHREADED SECTION DIAMETER	0.374 INCHES NOMINAL SECOND END THIRD PORTION
STRAIGHT UNTHREADED SECTION DIAMETER	0.462 INCHES MINIMUM AND 0.467 INCHES MAXIMUM SECOND END SECOND PORTION
SPECIAL FEATURES	THIRD PORTION OF SECOND END FACE SLOTTED,0.057 PLUS 0.010 IN. WIDE,0.0625 PLUS 0.0156 IN.DEEP
SURFACE TREATMENT	PASSIVATE
TEETH HARDNESS RATING	30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
WORM BODY LENGTH	1.328 INCHES NOMINAL
WORM BODY TAPERED BEARING SURFACE END	NOT PROVIDED
WORM HELIX ANGLE	6 DEG 52 MIN
WORM OUTSIDE DIAMETER	0.462 INCHES MINIMUM AND 0.467 INCHES MAXIMUM
WORM PITCH DIAMETER	0.375 INCHES MINIMUM AND 0.377 INCHES MAXIMUM
WORM THREAD DIRECTION	RIGHT-HAND
WORM PRESSURE ANGLE IN DEG	14.500
WORM THREAD LEAD	0.143 INCHES NOMINAL
WORM THREAD QUANTITY	1
WORM THREAD SECTION LENGTH	0.750 INCHES NOMINAL

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