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NSN 4730-01-321-7733Government record, cited
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Expansion Joint, Pipe4730-01-321-7733

NSN 4730-01-321-7733 · NIIN 013217733
FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings
Government record, cited
Also searched as  4730-01-321-7733 · 4730013217733 · NIIN 013217733 · 01-321-7733 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · MIL-E-15330 · MILE15330DCLATY1SZ5X10-3/4#150
Nearby stock numbers  ·
L 7.000 INCHES IN ⌀0.688 INCHES NOMINAL IN HOSE FITTING
4730-01-321-7733 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
  • Expansion Joint,pipe — FSC 4730
  • Nominal Pipe Size Designation: 5.000 INCHES IN
  • Design Type: SPOOL
  • End Connection Type: FLANGED
  • Traverse Maximum Length: 7.000 INCHES IN
  • Bolt Hole Diameter: 0.688 INCHES NOMINAL IN
  • Nondefinitive Spec/std Data: A CLASS AND 1 TYPE
  • Working Pressure Rating: 125.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
Identification
  • NSN: 4730-01-321-7733
  • NIIN: 013217733
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
General Description

The Expansion Joint,pipe, cataloged under National Stock Number 4730-01-321-7733, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-321-7733
Item NameExpansion Joint,pipe
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
StatusACTIVE
Nominal Pipe Size Designation5.000 INCHES IN
Design TypeSPOOL
End Connection TypeFLANGED
Traverse Maximum Length7.000 INCHES IN
Bolt Hole Diameter0.688 INCHES NOMINAL IN
Nondefinitive Spec/std DataA CLASS AND 1 TYPE
Working Pressure Rating125.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
Bolt Hole Quantity10
Bolt Circle Diameter5.563 INCHES NOMINAL IN
MaterialCOPPER ALLOY FLANGE
Joint TypeSINGLE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
ReferenceMeaning
MIL-E-15330 4/1 Identification reference
U.S. Government activity
MILE15330DCLATY1SZ5X10-3/4#150 2/2 Government specification standardization
U.S. Government activity
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 4730-01-321-7733?

NSN 4730-01-321-7733 is a Expansion Joint,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What are the specifications of 4730-01-321-7733?

Key specifications for 4730-01-321-7733: Nominal Pipe Size Designation: 5.000 INCHES IN; Design Type: SPOOL; End Connection Type: FLANGED; Traverse Maximum Length: 7.000 INCHES IN. 11 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-321-7733 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.

PartsTable — the parts reference. Every fact cited to its source.
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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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