PartsTable TECHNICAL DATA SHEET
NSN 4730-01-633-8271Government record, cited

Nut, Union4730-01-633-8271

NSN 4730-01-633-8271 · NIIN 016338271 · Part number A81371-002
Moog Inc Div Moog Inc., Space and Defense - Salt Lake City · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 19156
Government record, cited
NSN 4730-01-633-8271 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-633-8271. Manufacturer of record part number: A81371-002.
Also searched as  4730-01-633-8271 · 4730016338271 · NIIN 016338271 · 01-633-8271 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 19156 · A81371-002
Nearby stock numbers  ·
Features
  • Nut,union — FSC 4730
  • Width Across Flats: 0.375 INCHES NOMINAL IN
  • Nut Height: 0.360 INCHES NOMINAL IN
  • Nut Style: HEXAGON
  • Material: STEEL OVERALL
  • Smallest Inside Diameter: 0.250 INCHES NOMINAL IN
  • Shoulder Seat Diameter: 190.32 INCHES NOMINAL IN
  • 1 manufacturer part number on file
Identification
  • NSN: 4730-01-633-8271
  • NIIN: 016338271
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
  • Primary part number: A81371-002
  • Manufacturer: Moog Inc Div Moog Inc., Space and Defense - Salt Lake City
General Description

The Nut,union, cataloged under National Stock Number 4730-01-633-8271, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Moog Inc Div Moog Inc., Space and Defense - Salt Lake City. Government technical data includes 6 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. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-633-8271
Primary Part NumberA81371-002
Item NameNut,union
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
ManufacturerMoog Inc Div Moog Inc., Space and Defense - Salt Lake City
StatusACTIVE
Width Across Flats0.375 INCHES NOMINAL IN
Nut Height0.360 INCHES NOMINAL IN
Nut StyleHEXAGON
MaterialSTEEL OVERALL
Smallest Inside Diameter0.250 INCHES NOMINAL IN
Shoulder Seat Diameter190.32 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
A81371-002 PRIMARY Moog Inc Div Moog Inc., Space and Defense - Salt Lake City (USA)
No interchangeability data on file.
Other items in FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895
4730-00-000-1895 · Item name not on file
4730-00-000-4289
4730-00-000-4289 · Item name not on file
4730-00-000-4445
4730-00-000-4445 · Item name not on file
4730-00-000-8373
4730-00-000-8373 · Item name not on file
4730-00-000-8897
4730-00-000-8897 · Item name not on file
4730-00-001-0007
4730-00-001-0007 · Item name not on file
4730-00-001-0008
COUPLING,TUBE
4730-00-001-0008
COUPLING,TUBE

Frequently Asked Questions

What is NSN 4730-01-633-8271?

NSN 4730-01-633-8271 is a Nut,union, manufactured by Moog Inc Div Moog Inc., Space and Defense - Salt Lake City, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What part numbers are listed for NSN 4730-01-633-8271?

NSN 4730-01-633-8271 has 1 manufacturer part number on file: A81371-002 (Moog Inc Div Moog Inc., Space and Defense - Salt Lake City).

What are the specifications of A81371-002?

Key specifications for A81371-002: Width Across Flats: 0.375 INCHES NOMINAL IN; Nut Height: 0.360 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: NUT, CAP; Nut Style: HEXAGON. 6 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-633-8271 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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
PartsTable Design LLC · partstable.com