3040-00-652-6305, WORM SHAFT

National Stock Number:
3040-00-652-6305

Federal Supply Class:
3040

National Item Identification Number:
006526305

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:

8759232

19207

U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM

Techincal Specification:

MATERIAL	STEEL
TEETH HARDNESS RATING	48.0 ROCKWELL C MINIMUM AND
	53.0 ROCKWELL C MAXIMUM
SHAFT HARDNESS RATING	48.0 ROCKWELL C MINIMUM AND
	53.0 ROCKWELL C MAXIMUM
SURFACE TREATMENT	PHOSPHATE
WORM THREAD QUANTITY	2
WORM PRESSURE ANGLE IN DEG	14.500
WORM THREAD LEAD	0.750 INCHES NOMINAL
WORM THREAD DIRECTION	RIGHT-HAND
WORM HELIX ANGLE	14 DEG 56 MIN 24 SEC
WORM OUTSIDE DIAMETER	2.680 INCHES NOMINAL
WORM PITCH DIAMETER	2.500 INCHES NOMINAL
WORM THREAD SECTION LENGTH	2.063 INCHES NOMINAL
WORM BODY LENGTH	2.500 INCHES NOMINAL
WORM BODY TAPERED BEARING SURFACE END	NOT PROVIDED
SHAFT LOCATION	BOTH ENDS OF WORM
END SIMILARITY	NOT IDENTICAL
STRAIGHT UNTHREADED LENGTH	1.250 INCHES NOMINAL FIRST END, FIRST PORTION
	0.813 INCHES NOMINAL FIRST END, SECOND PORTION
	1.250 INCHES NOMINAL SECOND END, FIRST PORTION
	0.750 INCHES NOMINAL SECOND END, SECOND PORTION
	1.500 INCHES NOMINAL SECOND END, THIRD PORTION
	1.927 INCHES MINIMUM SECOND END, FIFTH PORTION
	1.937 INCHES MAXIMUM SECOND END, FIFTH PORTION
STRAIGHT UNTHREADED SECTION DIAMETER	1.560 INCHES MINIMUM FIRST END, FIRST PORTION
	1.570 INCHES MAXIMUM FIRST END, FIRST PORTION
	1.1810 INCHES MINIMUM FIRST END, SECOND PORTION
	1.1814 INCHES MAXIMUM FIRST END, SECOND PORTION
	1.560 INCHES MINIMUM SECOND END, FIRST PORTION
	1.570 INCHES MAXIMUM SECOND END, FIRST PORTION
	1.1810 INCHES MINIMUM SECOND END, SECOND PORTION
	1.1814 INCHES MAXIMUM SECOND END, SECOND PORTION
	1.125 INCHES NOMINAL SECOND END, THIRD PORTION
	0.872 INCHES MINIMUM SECOND END, FIFTH PORTION
	0.875 INCHES MAXIMUM SECOND END, FIFTH PORTION
UNTHREADED SECTION KEYWAY WIDTH	0.2490 INCHES MINIMUM SECOND END, FIFTH PORTION
	0.2510 INCHES MAXIMUM SECOND END, FIFTH PORTION
UNTHREADED SECTION KEYWAY DEPTH	0.139 INCHES MINIMUM SECOND END, FIFTH PORTION
	0.147 INCHES MAXIMUM SECOND END, FIFTH PORTION
TAPER LENGTH	0.250 INCHES NOMINAL SECOND END, FOURTH PORTION
TAPER LARGEST DIAMETER	1.125 INCHES NOMINAL SECOND END, FOURTH PORTION
TAPER PER FOOT IN INCHES	0.500 BOTH ENDS
SCREW THREAD SERIES DESIGNATOR	UNF BOTH ENDS
SHAFT THREAD DIRECTION	RIGHT-HAND SECOND END, SIXTH PORTION
THREAD LENGTH	1.095 INCHES MINIMUM SECOND END, SIXTH PORTION
	1.110 INCHES MAXIMUM SECOND END, SIXTH PORTION
OVERALL LENGTH	11.500 INCHES NOMINAL
SPECIAL FEATURES	32 AA MICROINCH FINISH ON FIRST END,SECOND PORTION,SECOND END,SECONDAND THIRD PORTIONS AND WORM THREAD SURFACES
THE MANUFACTURERS DATA
MANUFACTURERS CODE	19207
DESIGN CONTROL REFERENCE	8759232

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