3040-01-504-8342, WORM SHAFT

National Stock Number:
3040-01-504-8342

Federal Supply Class:
3040

National Item Identification Number:
015048342

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:

596-7410249	53711	NAVAL SEA SYSTEMS COMMAND
596-7410249-61	53711	NAVAL SEA SYSTEMS COMMAND
B831-9511-61	96169	ELECTRIC BOAT CORPORATION

Techincal Specification:

OVERALL LENGTH	12.120 INCHES NOMINAL
MATERIAL	STEEL CORROSION RESISTING
SECTION SHAPE	SQUARE FIRST END FIRST PORTION
SHAFT HARDNESS RATING	38.0 ROCKWELL C MAXIMUM LOCATION NOT OTHERWISE SPECIFIED
SHAFT LOCATION	ONE END OF WORM
SPECIAL FEATURES	MATERIAL SPECIFICATION ASTM-A564,TYPE-630,CONDITION-H1150,HOT FINISHED AND ASTM-A484. SURFACE FINISH 63.0 ON ACME THREADS. WORM IS 0.750-8 ACME-2G
WORM BODY LENGTH	12.120 INCHES NOMINAL
WORM BODY TAPERED BEARING SURFACE END	PROVIDED
WORM HELIX ANGLE	3.312 DEGREES
WORM OUTSIDE DIAMETER	0.750 INCHES NOMINAL
WORM PITCH DIAMETER	0.665 INCHES MINIMUM AND 0.681 INCHES MAXIMUM
WORM PRESSURE ANGLE IN DEG	14.500
WORM THREAD DIRECTION	RIGHT-HAND
WORM THREAD LEAD	0.125 INCHES NOMINAL
WORM THREAD QUANTITY	58
WORM THREAD SECTION LENGTH	7.240 INCHES NOMINAL
TAPERED BEARING SURFACE LARGEST DIAMETER	0.750 INCHES NOMINAL
TAPERED BEARING SURFACE LENGTH	0.050 INCHES NOMINAL
TAPERED BEARING SURFACE SMALLEST DIAMETER	0.650 INCHES NOMINAL
TEETH HARDNESS RATING	38.0 ROCKWELL C MAXIMUM

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