3040-00-087-6533, WORM SHAFT

National Stock Number:
3040-00-087-6533

Federal Supply Class:
3040

National Item Identification Number:
000876533

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:

7660476	19200	US ARMY ARDEC RDECOM
7660476	19205	SPRINGFIELD ARMORY

Techincal Specification:

END SIMILARITY	NOT IDENTICAL
FSC APPLICATION DATA	TELESCOPE,PANORAMIC
OVERALL LENGTH	5.320 INCHES MINIMUM AND 5.330 INCHES MAXIMUM
MATERIAL	STEEL
SPECIAL FEATURES	2 PIN HOLES 0.078 IN. DIA,LOCATED ON FOURTH PORTION OF SECOND END
SCREW THREAD SERIES DESIGNATOR	UNF BOTH ENDS
SHAFT HARDNESS RATING	33.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
SHAFT LOCATION	BOTH ENDS OF WORM
SHAFT THREAD DIRECTION	RIGHT-HAND SECOND END, THIRD PORTION
WORM BODY LENGTH	2.251 INCHES NOMINAL
WORM BODY TAPERED BEARING SURFACE END	NOT PROVIDED
WORM HELIX ANGLE	3 DEG 10 MIN
WORM OUTSIDE DIAMETER	0.620 INCHES MINIMUM AND 0.625 INCHES MAXIMUM
WORM PITCH DIAMETER	0.560 INCHES MINIMUM AND 0.562 INCHES MAXIMUM
WORM THREAD DIRECTION	LEFT-HAND
WORM PRESSURE ANGLE IN DEG	14.500
WORM THREAD LEAD	0.098 INCHES NOMINAL
WORM THREAD QUANTITY	1
WORM THREAD SECTION LENGTH	0.680 INCHES MINIMUM AND 0.690 INCHES MAXIMUM
STRAIGHT UNTHREADED LENGTH	0.250 INCHES MINIMUM SECOND END, SECOND PORTION
STRAIGHT UNTHREADED LENGTH	0.260 INCHES MAXIMUM SECOND END, SECOND PORTION
STRAIGHT UNTHREADED LENGTH	0.669 INCHES NOMINAL FIRST END, SECOND PORTION
STRAIGHT UNTHREADED LENGTH	0.790 INCHES MAXIMUM SECOND END, FIRST PORTION
STRAIGHT UNTHREADED LENGTH	0.781 INCHES NOMINAL FIRST END, FIRST PORTION
STRAIGHT UNTHREADED LENGTH	1.980 INCHES NOMINAL SECOND END, FOURTH PORTION
STRAIGHT UNTHREADED SECTION DIAMETER	0.311 INCHES MINIMUM FIRST END, SECOND PORTION
STRAIGHT UNTHREADED SECTION DIAMETER	0.312 INCHES MAXIMUM FIRST END, SECOND PORTION
STRAIGHT UNTHREADED SECTION DIAMETER	0.315 INCHES NOMINAL SECOND END, SECOND PORTION
STRAIGHT UNTHREADED SECTION DIAMETER	0.340 INCHES MAXIMUM FIRST END, FIRST PORTION
STRAIGHT UNTHREADED SECTION DIAMETER	0.330 INCHES MINIMUM FIRST END, FIRST PORTION
STRAIGHT UNTHREADED SECTION DIAMETER	0.400 INCHES MINIMUM SECOND END, FIRST PORTION
STRAIGHT UNTHREADED SECTION DIAMETER	0.410 INCHES MAXIMUM SECOND END, FIRST PORTION
TEETH HARDNESS RATING	33.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
THREAD LENGTH	0.170 INCHES NOMINAL SECOND END, THIRD PORTION

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