3040-00-971-5975, WORM SHAFT

National Stock Number:
3040-00-971-5975

Federal Supply Class:
3040

National Item Identification Number:
009715975

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:

3040-00-971-5975	A00AM	E.C.A ETABLISSEMENT CENTRAL DESAPPROVISIONNEMENTS DES FORCES ARMEE
8615827	19200	US ARMY ARDEC RDECOM

Techincal Specification:

END SIMILARITY	NOT IDENTICAL
FSC APPLICATION DATA	TELESCOPE
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-763, CLASS 440F OR CLASS 416, COND A FED SPEC ALL MATERIAL RESPONSES
MATERIAL	STEEL COMP 440F OR STEEL COMP 416
OVERALL LENGTH	4.510 INCHES MINIMUM AND 4.520 INCHES MAXIMUM
SHAFT HARDNESS RATING	OVERALL ROCKWELL C,50 MIN,55 MAX OF FED,QQ-S-763,CLASS 440F,COND A,OR ROCKWELL C,30 MIN,35 MAX,QQ-S-763,CLASS416 COND A
SHAFT LOCATION	BOTH ENDS OF WORM
SPECIAL FEATURES	FOURTH PORTION OF FIRST END AND FIFTH PORTION OF SECOND END NOT HARDENED
STRAIGHT UNTHREADED LENGTH	0.096 INCHES MAXIMUM AXIALLY AT EACH END
STRAIGHT UNTHREADED LENGTH	0.096 INCHES MAXIMUM E ENTRANCE
STRAIGHT UNTHREADED LENGTH	0.094 INCHES MINIMUM D ENTRANCE
STRAIGHT UNTHREADED LENGTH	0.094 INCHES MINIMUM TERMINAL BOX
STRAIGHT UNTHREADED LENGTH	0.125 INCHES NOMINAL ALL THREADED PORTIONS
STRAIGHT UNTHREADED LENGTH	0.125 INCHES NOMINAL FIRST MORTISE
STRAIGHT UNTHREADED LENGTH	0.125 INCHES NOMINAL RECEPTACLE PLATE
STRAIGHT UNTHREADED LENGTH	0.463 INCHES NOMINAL THREADS
STRAIGHT UNTHREADED LENGTH	0.484 INCHES NOMINAL SECOND SHAFT
STRAIGHT UNTHREADED LENGTH	0.570 INCHES MAXIMUM INNER CUP
STRAIGHT UNTHREADED LENGTH	0.570 INCHES MINIMUM CONCENTRIC HOLE
STRAIGHT UNTHREADED LENGTH	0.580 INCHES MAXIMUM COUNTERBORE
STRAIGHT UNTHREADED LENGTH	0.560 INCHES MINIMUM INNER BUSHING
STRAIGHT UNTHREADED SECTION DIAMETER	0.323 INCHES MINIMUM D ENTRANCE
STRAIGHT UNTHREADED SECTION DIAMETER	0.325 INCHES MAXIMUM E ENTRANCE
SURFACE TREATMENT	PASSIVATE
TEETH HARDNESS RATING	ROCKWELL C,50 MIN,55 MAX,FED,QQ-S-763,CLASS 440F COND A,OR ROCKWELL C,30 MIN,35 MAX,QQ-S-MLO,CLASS 416,COND A
UNTHREADED SECTION PIN HOLE DIAMETER	0.0940 INCHES NOMINAL INNER BUSHING
UNTHREADED SECTION PIN HOLE DIAMETER	0.0940 INCHES NOMINAL CONCENTRIC HOLE
WORM BODY LENGTH	2.130 INCHES NOMINAL
WORM BODY TAPERED BEARING SURFACE END	NOT PROVIDED
WORM HELIX ANGLE	3 DEG 59 MIN 12 SEC
WORM OUTSIDE DIAMETER	1.020 INCHES MINIMUM AND 1.022 INCHES MAXIMUM
WORM PITCH DIAMETER	0.196 INCHES NOMINAL
WORM PRESSURE ANGLE IN DEG	20.000
WORM THREAD DIRECTION	RIGHT-HAND
WORM THREAD LEAD	0.196 INCHES NOMINAL
WORM THREAD QUANTITY	1
WORM THREAD SECTION LENGTH	1.870 INCHES MINIMUM AND 1.880 INCHES MAXIMUM

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