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NSN 4730-00-537-9304Government record, cited
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Expansion Joint, Pipe4730-00-537-9304

NSN 4730-00-537-9304 · NIIN 005379304 · Part number 21312
Hyspan Precision Products, Inc. · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 70510
Government record, cited
NSN 4730-00-537-9304 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-537-9304. Manufacturer of record part number: 21312.
Also searched as  4730-00-537-9304 · 4730005379304 · NIIN 005379304 · 00-537-9304 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 70510 · 21312
Nearby stock numbers  ·
HOSE FITTING
4730-00-537-9304 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
  • Expansion Joint,pipe — FSC 4730
  • 1 manufacturer part number on file
  • Manufacturer of record: Hyspan Precision Products, Inc.
Identification
  • NSN: 4730-00-537-9304
  • NIIN: 005379304
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
  • Primary part number: 21312
  • Manufacturer: Hyspan Precision Products, Inc.
General Description

The Expansion Joint,pipe, cataloged under National Stock Number 4730-00-537-9304, 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 Hyspan Precision Products, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts
Item NameExpansion Joint,pipe
FSC / FSG4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47)
ManufacturersHyspan Precision Products, Inc. (CAGE 70510)
Technical Specifications
ParameterValue
NSN4730-00-537-9304
Primary Part Number21312
Item NameExpansion Joint,pipe
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
ManufacturerHyspan Precision Products, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
⇄ Related Items 6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3120-00-661-913521-312 POSSIBLE MATCH
BEARING,SLEEVE
Possible match (shared part number)Dresser Industries Inc Leroi Div
2910-01-117-725221312 POSSIBLE MATCH
SLEEVE,GOVERNOR THR
Possible match (shared part number)Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
4730-01-348-058521312 POSSIBLE MATCH
ELBOW,HOSE
Possible match (shared part number)National Oil Well Dba Iec Baylor
5998-01-371-480521312 POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
Possible match (shared part number)Anritsu Instruments Company Div Mbu
2940-01-378-323421312 POSSIBLE MATCH
INDICATOR,FILTER WARNING,VEHICUL
Possible match (shared part number)Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
4820-01-421-168921312-001 POSSIBLE MATCH
VALVE,LINEAR,DIRECTIONAL CONTROL
Possible match (shared part number)Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Cross-Reference Index
Part NumberManufacturer
21312 PRIMARY Hyspan Precision Products, Inc. (USA)
Reference documents
ReferenceMeaning
21312 3/9 Design control — primary reference
Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc
Related Parts
3120-00-661-9135POSSIBLE MATCH
BEARING,SLEEVE
21-312
2910-01-117-7252POSSIBLE MATCH
SLEEVE,GOVERNOR THR
21312
4730-01-348-0585POSSIBLE MATCH
ELBOW,HOSE
21312
5998-01-371-4805POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
21312
2940-01-378-3234POSSIBLE MATCH
INDICATOR,FILTER WARNING,VEHICUL
21312
4820-01-421-1689POSSIBLE MATCH
VALVE,LINEAR,DIRECTIONAL CONTROL
21312-001

Frequently Asked Questions

What is NSN 4730-00-537-9304?

NSN 4730-00-537-9304 is a Expansion Joint,pipe, manufactured by Hyspan Precision Products, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What part numbers are listed for NSN 4730-00-537-9304?

NSN 4730-00-537-9304 has 1 manufacturer part number on file: 21312 (Hyspan Precision Products, Inc.).

What NSN replaces 4730-00-537-9304?

6 possible matches (shared part number, not a government interchangeability claim): 3120-00-661-9135, 2910-01-117-7252, 4730-01-348-0585. Verify interchangeability with system specifications before substitution.

Is NSN 4730-00-537-9304 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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