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NSN 3040-00-004-3678, 3040000043678
WORM SHAFT

Federal Supply Classification
FSC 3040 - Miscellaneous Power Transmission Equipment
National Item Identification Number
NIIN 000043678
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 3040-00-004-3678

National Stock Number (NSN) 3040-00-004-3678, or NIIN 000043678, (worm shaft) was assigned June 7, 1972 in the Federal Logistics Information System (FLIS). NIIN 000043678 was cancelled on December 15, 2017, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.

There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.

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 3040000043678 does not contain precious metals.

This information was last updated on .


Technical Characteristics

UNABLE TO DECODE
(CFFX) UNABLE TO DECODE
WORM PITCH DIAMETER
(CFFL) 0.335 INCHES NOMINAL
UNABLE TO DECODE
(CFGC) UNABLE TO DECODE
UNTHREADED SECTION PIN HOLE DIAMETER
(CFGC) 0.0400 INCHES NOMINAL SECOND END, FIRST PORTION
UNTHREADED SECTION PIN HOLE DIAMETER
(CFGC) 0.0960 INCHES NOMINAL FIRST END, FIRST PORTION
MATERIAL
(MATT) STEEL
UNABLE TO DECODE
(CFFC) UNABLE TO DECODE
WORM BODY TAPERED BEARING SURFACE END
(CFFQ) NOT PROVIDED
UNABLE TO DECODE
(CFFY) UNABLE TO DECODE
UNABLE TO DECODE
(MATL) UNABLE TO DECODE
TEETH HARDNESS RATING
(BYFR) 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
UNABLE TO DECODE
(BYFR) UNABLE TO DECODE AND UNABLE TO DECODE
WORM THREAD QUANTITY
(CFFB) 1
UNABLE TO DECODE
(CFFW) UNABLE TO DECODE
MATERIAL
(MATL) STEEL
END SIMILARITY
(AAHN) NOT IDENTICAL
UNABLE TO DECODE
(CFFF) UNABLE TO DECODE
UNABLE TO DECODE
(CFFB) UNABLE TO DECODE
WORM THREAD LEAD
(CFFC) 0.066 INCHES NOMINAL
WORM HELIX ANGLE
(CFFG) 3 DEG 34 MIN
UNABLE TO DECODE
(CFFM) UNABLE TO DECODE AND UNABLE TO DECODE
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.560 INCHES NOMINAL SECOND END
STRAIGHT UNTHREADED SECTION DIAMETER
(CFFY) 0.270 INCHES NOMINAL SECOND END
UNABLE TO DECODE
(ABHP) UNABLE TO DECODE
WORM THREAD DIRECTION
(CFFD) RIGHT-HAND
SURFACE TREATMENT
(SURF) PHOSPHATE
UNABLE TO DECODE
(CFFD) UNABLE TO DECODE
UNABLE TO DECODE
(CFFQ) UNABLE TO DECODE
SURFACE TREATMENT
(SFTT) PHOSPHATE
UNABLE TO DECODE
(SFTT) UNABLE TO DECODE
UNABLE TO DECODE
(SURF) UNABLE TO DECODE
OVERALL LENGTH
(ABHP) 1.800 INCHES NOMINAL
UNABLE TO DECODE
(CFFG) UNABLE TO DECODE
WORM OUTSIDE DIAMETER
(CFFK) 0.375 INCHES NOMINAL
STRAIGHT UNTHREADED LENGTH
(CFFX) 0.430 INCHES NOMINAL FIRST END
STRAIGHT UNTHREADED SECTION DIAMETER
(CFFY) 0.351 INCHES NOMINAL FIRST END
UNABLE TO DECODE
(CFFL) UNABLE TO DECODE
SPECIAL FEATURES
(FEAT) THREE 0.096 IN. DIA,MOUNTING HOLES SPACED 120 DEG APART ON FIRST END AND FOUR 0.040 IN. DIA MOUNTING HOLES SPACED 0.330 IN. C TO C ON SECOND END
UNABLE TO DECODE
(FEAT) UNABLE TO DECODE
UNABLE TO DECODE
(AAHN) UNABLE TO DECODE
WORM PRESSURE ANGLE IN DEG
(CFFF) 14.500
UNABLE TO DECODE
(CFFK) UNABLE TO DECODE
SHAFT HARDNESS RATING
(CFFM) 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
SHAFT LOCATION
(CFFW) BOTH ENDS OF WORM
UNABLE TO DECODE
(MATT) UNABLE TO DECODE

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