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NSN 3040-01-399-0281Government record, cited
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Worm Shaft3040-01-399-0281

NSN 3040-01-399-0281 · NIIN 013990281 · Part number 167-6404330 FIND 16
Naval Sea Systems Command · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 53711
Government record, cited
NSN 3040-01-399-0281 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-399-0281. Manufacturer of record part number: 167-6404330 FIND 16.
Also searched as  3040-01-399-0281 · 3040013990281 · NIIN 013990281 · 01-399-0281 · FSC 3040 Miscellaneous Power Transmission Equipment · CAGE 53711 · 167-6404330 FIND 16 · 167-6404330
Nearby stock numbers  ·
Features
  • Worm Shaft — FSC 3040
  • Shaft Location: BOTH ENDS OF WORM
  • Worm Thread Lead: 0.4375 INCHES NOMINAL IN
  • Thread Length: 1.1680 INCHES NOMINAL SECOND END FIFTH PORTION IN
  • Worm Pitch Diameter: 1.5000 INCHES NOMINAL IN
  • Worm Outside Diameter: 1.7790 INCHES NOMINAL IN
  • Straight Unthreaded Section Diameter: 0.7300 INCHES NOMINAL SECOND END FOURTH PORTION IN
  • Straight Unthreaded Section Diameter: 1.1240 INCHES NOMINAL SECOND END THIRD PORTION IN
Identification
  • NSN: 3040-01-399-0281
  • NIIN: 013990281
  • FSC: 3040 — Miscellaneous Power Transmission Equipment
  • FSG: 30 — Mechanical Power Transmission Equipment
  • Primary part number: 167-6404330 FIND 16
  • Manufacturer: Naval Sea Systems Command
General Description

The Worm Shaft, cataloged under National Stock Number 3040-01-399-0281, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 11 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-01-399-0281
Primary Part Number167-6404330 FIND 16
Item NameWorm Shaft
FSC / FSG3040 / 30 — Miscellaneous Power Transmission Equipment
ManufacturerNaval Sea Systems Command
StatusACTIVE
Shaft LocationBOTH ENDS OF WORM
Worm Thread Lead0.4375 INCHES NOMINAL IN
Thread Length1.1680 INCHES NOMINAL SECOND END FIFTH PORTION IN
Worm Pitch Diameter1.5000 INCHES NOMINAL IN
Worm Outside Diameter1.7790 INCHES NOMINAL IN
Straight Unthreaded Section Diameter0.7300 INCHES NOMINAL SECOND END FOURTH PORTION IN
Straight Unthreaded Section Diameter1.1240 INCHES NOMINAL SECOND END THIRD PORTION IN
Straight Unthreaded Section Diameter1.2480 INCHES NOMINAL FIRST END SECOND PORTION IN
Straight Unthreaded Section Diameter1.2480 INCHES NOMINAL SECOND END SECOND PORTION IN
Taper Largest Diameter1.8900 INCHES NOMINAL FIRST END FIRST PORTION IN
Taper Largest Diameter1.8900 INCHES NOMINAL SECOND END FIRST PORTION IN
Unthreaded Section Keyway Depth0.0730 INCHES NOMINAL SECOND END THIRD PORTION IN
End SimilarityNOT IDENTICAL
Taper Length0.9650 INCHES NOMINAL FIRST END FIRST PORTION IN
Taper Length0.9650 INCHES NOMINAL SECOND END FIRST PORTION IN
Screw Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SECOND END FIFTH PORTION
Worm Thread Section Length1.5000 INCHES NOMINAL IN
Shaft Thread DirectionRIGHT-HAND SECOND END FIFTH PORTION
Worm Helix Angle5 DEG 3 MIN
MaterialSTEEL CORROSION RESISTING
Worm Thread Quantity1
Worm Thread DirectionRIGHT-HAND
Unthreaded Section Keyway Width0.2510 INCHES NOMINAL SECOND END THIRD PORTION IN
Worm Pressure Angle in Deg14.500
Worm Body Tapered Bearing Surface EndNOT PROVIDED
Straight Unthreaded Length0.2200 INCHES NOMINAL SECOND END FOURTH PORTION IN
Straight Unthreaded Length0.7340 INCHES NOMINAL SECOND END THIRD PORTION IN
Straight Unthreaded Length1.4370 INCHES NOMINAL SECOND END SECOND PORTION IN
Straight Unthreaded Length1.7490 INCHES NOMINAL FIRST END SECOND PORTION IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 11
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3020-01-399-1849167-6404330 FIND 15 POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Naval Sea Systems Command
3020-01-399-1850167-6404330 FIND 14 POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Naval Sea Systems Command
3040-01-399-1856167-6404330 FIND 26 POSSIBLE MATCH
CONNECTING LINK,RIGID
Possible match (shared part number)Naval Sea Systems Command
3020-01-399-5665167-6404330 FIND 13 POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Naval Sea Systems Command
3020-01-399-6281167-6404330 FIND 10 POSSIBLE MATCH
GEAR SECTOR,WORM WHEEL
Possible match (shared part number)Naval Sea Systems Command
3020-01-399-6282167-6404330 FIND 11 POSSIBLE MATCH
GEAR SECTOR,WORM WHEEL
Possible match (shared part number)Naval Sea Systems Command
3020-01-400-2040167-6404330 FIND 48 POSSIBLE MATCH
GUARD,MECHANICAL DRIVE
Possible match (shared part number)Naval Sea Systems Command
3040-01-400-2041167-6404330 FIND 73 POSSIBLE MATCH
COLLAR,SHAFT
Possible match (shared part number)Naval Sea Systems Command
3020-01-400-2045167-6404330 FIND 8 POSSIBLE MATCH
GEAR SECTOR,WORM WHEEL
Possible match (shared part number)Naval Sea Systems Command
3040-01-400-3155167-6404330 FIND 17 POSSIBLE MATCH
SHAFT,STRAIGHT
Possible match (shared part number)Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
167-6404330 FIND 16 PRIMARY Naval Sea Systems Command (USA)
Reference documents
ReferenceMeaning
167-6404330 D/9 Drawing number reference only
Naval Sea Systems Command
Related Parts
3020-01-399-1849POSSIBLE MATCH
GEAR,SPUR
167-6404330 FIND 15
3020-01-399-1850POSSIBLE MATCH
GEAR,SPUR
167-6404330 FIND 14
3040-01-399-1856POSSIBLE MATCH
CONNECTING LINK,RIGID
167-6404330 FIND 26
3020-01-399-5665POSSIBLE MATCH
GEAR,SPUR
167-6404330 FIND 13
3020-01-399-6281POSSIBLE MATCH
GEAR SECTOR,WORM WHEEL
167-6404330 FIND 10
3020-01-399-6282POSSIBLE MATCH
GEAR SECTOR,WORM WHEEL
167-6404330 FIND 11
3020-01-400-2040POSSIBLE MATCH
GUARD,MECHANICAL DRIVE
167-6404330 FIND 48
3040-01-400-2041POSSIBLE MATCH
COLLAR,SHAFT
167-6404330 FIND 73
3020-01-400-2045POSSIBLE MATCH
GEAR SECTOR,WORM WHEEL
167-6404330 FIND 8
3040-01-400-3155POSSIBLE MATCH
SHAFT,STRAIGHT
167-6404330 FIND 17
3040-01-459-5223POSSIBLE MATCH
WORM SHAFT
167-6404330 FIND 98

Frequently Asked Questions

What is NSN 3040-01-399-0281?

NSN 3040-01-399-0281 is a Worm Shaft, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.

What part numbers are listed for NSN 3040-01-399-0281?

NSN 3040-01-399-0281 has 1 manufacturer part number on file: 167-6404330 FIND 16 (Naval Sea Systems Command).

What NSN replaces 3040-01-399-0281?

11 possible matches (shared part number, not a government interchangeability claim): 3020-01-399-1849, 3020-01-399-1850, 3040-01-399-1856. Verify interchangeability with system specifications before substitution.

What are the specifications of 167-6404330 FIND 16?

Key specifications for 167-6404330 FIND 16: Shaft Location: BOTH ENDS OF WORM; Worm Thread Lead: 0.4375 INCHES NOMINAL IN; Thread Length: 1.1680 INCHES NOMINAL SECOND END FIFTH PORTION IN; Overall Length: 8.7400 INCHES NOMINAL IN. 29 specifications are documented in the U.S. Government catalog.

Is NSN 3040-01-399-0281 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

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✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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