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NSN 3040-00-991-6741, 3040009916741
WORM SHAFT

Federal Supply Classification
FSC 3040 - Miscellaneous Power Transmission Equipment
National Item Identification Number
NIIN 009916741
Codification Country
United States
Item Name Code
INC 18249
Criticality
(X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code
(N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.
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DLMS® Summary

National Stock Number 3040-00-991-6741

National Stock Number (NSN) 3040-00-991-6741, or NIIN 009916741, (worm shaft) was assigned January 1, 1962 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are no manufacturer part numbers associated to this NSN.

This part number has not been procured by the US Government in over 5 years.

This NSN is assigned to Item Name Code (INC) 18249. [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, AND THE LIKE. ICLUDES ITEMS WITH BEARINGS. EXCLUDES:ITEMS HAVING MORE THAN ON WORM COMPLEMENT OF HELICAL THREADS, ITEMS WITH A SEPARATE COMPLEMENT OF GEAR TEETH, AND GEAR, WORM.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 3040009916741 does not contain precious metals.

This NSN is associated to Schedule B 8483105000: transmission shafts and cranks, except camshafts and crankshafts. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 333613: mechanical power transmission equipment manufacturing.

This information was last updated on .

Technical Characteristics

MATERIAL
(MATL) STEEL,QQ-S-624,FS4617,FS4620,FS8617,FS8620 OR FS8720
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.877 INCHES MINIMUM TERMINAL BOX
STRAIGHT UNTHREADED SECTION DIAMETER
(CFFY) 0.874 INCHES MAXIMUM E ENTRANCE
UNTHREADED SECTION KEYWAY WIDTH
(CFFZ) 0.1569 INCHES MAXIMUM E ENTRANCE
STRAIGHT UNTHREADED SECTION DIAMETER
(CFFY) 1.295 INCHES MAXIMUM SINGLE SHAFT
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.060 INCHES MAXIMUM SINGLE SHAFT
END SIMILARITY
(AAHN) NOT IDENTICAL
FSC APPLICATION DATA
(ZZZV) TRAVERSING MECHANISM,MACHINE GUN
KEYWAY DEPTH
(ABRV) 0.076 INCHES MINIMUM STEAM INLET
KEYWAY DEPTH
(ABRV) 0.093 INCHES MAXIMUM BACK LINING
KEYWAY WIDTH
(ABRR) 0.188 INCHES MINIMUM AND 0.188 INCHES MINIMUM STEAM INLET0.204 INCHES MAXIMUM SECOND END SIXTH PORTION
KEYWAY WIDTH
(ABRR) 0.204 INCHES MAXIMUM BACK LINING
OVERALL LENGTH
(ABHP) 7.188 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-S-624,FS4617,FS4620,FS8617,FS8620 OR FS8720 FED SPEC ALL MATERIAL RESPONSES
MATERIAL
(MATT) STEEL COMP 4620 OR STEEL COMP 8617 OR STEEL COMP 8620 OR STEEL COMP 8720
SCREW THREAD SERIES DESIGNATOR
(AJYP) UNABLE TO DECODE
SHAFT LOCATION
(CFFW) BOTH ENDS OF WORM
SHAFT THREAD DIRECTION
(AKAF) UNABLE TO DECODE
SPECIAL FEATURES
(FEAT) FOURTH PORTION,FIRST END,CHAMFERED TO 0.062 BY 45 DEG
STRAIGHT UNTHREADED SECTION DIAMETER
(CFFY) 1.250 INCHES NOMINAL FIRST END FIRST PORTION
STRAIGHT UNTHREADED SECTION DIAMETER
(CFFY) 1.250 INCHES NOMINAL SECOND END FIRST PORTION
STRAIGHT UNTHREADED SECTION DIAMETER
(CFFY) 1.287 INCHES MINIMUM AND 1.295 INCHES MAXIMUM FIRST END THIRD PORTION
STRAIGHT UNTHREADED SECTION DIAMETER
(CFFY) 1.377 INCHES MINIMUM AND 1.378 INCHES MAXIMUM FIRST END SECOND PORTION
STRAIGHT UNTHREADED SECTION DIAMETER
(CFFY) 1.377 INCHES MINIMUM AND 1.378 INCHES MAXIMUM SECOND END SECOND PORTION
STRAIGHT UNTHREADED SECTION DIAMETER
(CFFY) 1.377 INCHES MINIMUM AND 1.377 INCHES MAXIMUM FIRST END FOURTH PORTION
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.125 INCHES NOMINAL FIRST END FOURTH PORTION0.877 INCHES MINIMUM TERMINAL BOX
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.125 INCHES NOMINAL INNER BUSHING
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.750 INCHES NOMINAL D ENTRANCE
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.725 INCHES MINIMUM AND 0.745 INCHES MAXIMUM SECOND END FIFTH PORTION
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.750 INCHES NOMINAL SECOND END THIRD PORTION0.060 INCHES MAXIMUM SINGLE SHAFT
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.812 INCHES NOMINAL SECOND END SECOND PORTION0.056 INCHES MINIMUM SECOND SHAFT
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.812 INCHES NOMINAL ALL THREADED PORTIONS
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.874 INCHES NOMINAL FIRST MORTISE0.056 INCHES MINIMUM AND 0.060 INCHES MAXIMUM FIRST END THIRD PORTION
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.856 INCHES NOMINAL RECEPTACLE PLATE
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.856 INCHES NOMINAL SECOND END FIRST PORTION0.881 INCHES MAXIMUM AXIALLY AT EACH END
STRAIGHT UNTHREADED SECTION DIAMETER
(CFFY) 0.125 INCHES NOMINAL SECOND END FIFTH PORTION
STRAIGHT UNTHREADED SECTION DIAMETER
(CFFY) 0.873 INCHES MINIMUM AND 0.874 INCHES MAXIMUM SECOND END THIRD PORTION
SURFACE TREATMENT
(SFTT) OIL
TAPER PER FOOT IN INCHES
(ABNJ) 1.248 SECOND END FOURTH PORTIONUNABLE TO DECODE
TEETH HARDNESS RATING
(BYFR) 55.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM
TAPER LARGEST DIAMETER
(CFGD) 0.873 INCHES MINIMUM AND 0.874 INCHES MAXIMUM SECOND END FOURTH PORTION
TAPER LARGEST DIAMETER
(CFGD) 0.874 INCHES MAXIMUM BOSS
TAPER LENGTH
(ABND) 0.125 INCHES NOMINAL SECOND END FOURTH PORTIONUNABLE TO DECODE
THREAD LENGTH
(AASA) 0.582 INCHES NOMINAL SECOND END SEVENTH PORTIONUNABLE TO DECODE
UNTHREADED SECTION KEYWAY DEPTH
(CFGB) 0.173 INCHES MINIMUM AND 0.179 INCHES MAXIMUM SECOND END THIRD PORTION
UNTHREADED SECTION KEYWAY WIDTH
(CFFZ) 0.1553 INCHES MINIMUM AND 0.1569 INCHES MAXIMUM SECOND END THIRD PORTION
WORM BODY LENGTH
(CFFP) 2.000 INCHES NOMINAL
WORM BODY TAPERED BEARING SURFACE END
(CFFQ) NOT PROVIDED
WORM HELIX ANGLE
(CFFG) 85 DEG 45 MIN
WORM OUTSIDE DIAMETER
(CFFK) 1.932 INCHES MINIMUM AND 1.936 INCHES MAXIMUM
WORM PITCH DIAMETER
(CFFL) 1.687 INCHES NOMINAL
WORM THREAD DIRECTION
(CFFD) LEFT-HAND
WORM PRESSURE ANGLE IN DEG
(CFFF) 14.500
WORM THREAD LEAD
(CFFC) 0.3938 INCHES NOMINAL
WORM THREAD QUANTITY
(CFFB) 1
WORM THREAD SECTION LENGTH
(CFFN) 2.000 INCHES NOMINAL
ERR DEFAULT
(ABNJ) ERR DEFAULT
STRAIGHT UNTHREADED SECTION DIAMETER
(CFFY) 1.377 INCHES MAXIMUM INNER CUP
SHAFT THREAD DIRECTION
(AKAF) RIGHT-HAND SECOND END, SEVENTH PORTION
STRAIGHT UNTHREADED SECTION DIAMETER
(CFFY) 1.378 INCHES MAXIMUM AXIALLY AT EACH END
STRAIGHT UNTHREADED SECTION DIAMETER
(CFFY) 1.378 INCHES MAXIMUM FIRST STEP
UNABLE TO DECODE
(MATL) UNABLE TO DECODE
III FSC APPLICATION DATA
(ZZZV) TRAVERSING MECHANISM,MACHINE GUN
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.056 INCHES MINIMUM SECOND SHAFT
MATERIAL
(MATT) STEEL,QQ-S-624,FS4617,FS4620,FS8617,FS8620 OR FS8720
TAPER PER FOOT IN INCHES
(ABNJ) 1.248 SECOND END, FOURTH PORTION
SCREW THREAD SERIES DESIGNATOR
(AJYP) UNF SECOND END, SEVENTH PORTION
SURFACE TREATMENT
(SURF) LUBRICANT, IMPREGNATED
UNABLE TO DECODE
(SURF) UNABLE TO DECODE
UNTHREADED SECTION KEYWAY DEPTH
(CFGB) 0.179 INCHES MAXIMUM E ENTRANCE
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.745 INCHES MAXIMUM COUNTERBORE
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.881 INCHES MAXIMUM AXIALLY AT EACH END

Manufacturer Part Numbers

10930650

RNCC
3
RNVC
2
3040009916741

009916741

009916741


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Condition NS
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