PartsTable TECHNICAL DATA SHEET
NSN 4730-00-345-8703Government record, cited

Coupling, Boss4730-00-345-8703

NSN 4730-00-345-8703 · NIIN 003458703 · Part number ST7M195-1
The Boeing Company Div Defense · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 76301
Government record, cited
NSN 4730-00-345-8703 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-345-8703. Manufacturer of record part number: ST7M195-1.
Also searched as  4730-00-345-8703 · 4730003458703 · NIIN 003458703 · 00-345-8703 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 76301 · ST7M195-1
Nearby stock numbers  ·
Features
  • Coupling,boss — FSC 4730
  • Surface Treatment Document and Classification: MIL-P-23377 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Connection Style: GASKET SEAL (BOSS) ALL ENDS
  • Union Joint Location: SECOND END
  • Nominal Overall Length: 1.531 INCHES IN
  • Connection Type: THREADED INTERNAL BOSS ALL ENDS
  • Style Designator: RIGID, SHORT CENTER WRENCHING FACILITY
  • Material Document and Classification: QQ-S-764,TYPE 303SE FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Identification
  • NSN: 4730-00-345-8703
  • NIIN: 003458703
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
  • Primary part number: ST7M195-1
  • Manufacturer: The Boeing Company Div Defense
General Description

The Coupling,boss, cataloged under National Stock Number 4730-00-345-8703, 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 The Boeing Company Div Defense. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-345-8703
Primary Part NumberST7M195-1
Item NameCoupling,boss
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
ManufacturerThe Boeing Company Div Defense
StatusACTIVE
Surface Treatment Document and ClassificationMIL-P-23377 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Connection StyleGASKET SEAL (BOSS) ALL ENDS
Union Joint LocationSECOND END
Nominal Overall Length1.531 INCHES IN
Connection TypeTHREADED INTERNAL BOSS ALL ENDS
Style DesignatorRIGID, SHORT CENTER WRENCHING FACILITY
Material Document and ClassificationQQ-S-764,TYPE 303SE FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Nominal Thread Size0.375 INCHES ALL ENDS IN
Surface TreatmentPRIMER OVERALL
Thread Class3B ALL ENDS
MaterialSTEEL COMP 303SE OVERALL
Thread Series DesignatorUNF ALL ENDS
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
ST7M195-1 PRIMARY The Boeing Company Div Defense (USA)
ST7M195-1 Kmi, Inc Dba Kmi Inc (USA)
Reference documents
ReferenceMeaning
ST7M195-1 5/9 Secondary reference
Pioneer Machine Products Inc.
ST7M195-1 5/9 Secondary reference
Br Machine Parts Inc
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 4730-00-345-8703?

NSN 4730-00-345-8703 is a Coupling,boss, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What part numbers are listed for NSN 4730-00-345-8703?

NSN 4730-00-345-8703 has 2 manufacturer part numbers on file: ST7M195-1 (The Boeing Company Div Defense), ST7M195-1 (Kmi, Inc Dba Kmi Inc).

What are the specifications of ST7M195-1?

Key specifications for ST7M195-1: Surface Treatment Document and Classification: MIL-P-23377 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Connection Style: GASKET SEAL (BOSS) ALL ENDS; Union Joint Location: SECOND END; Nominal Overall Length: 1.531 INCHES IN. 12 specifications are documented in the U.S. Government catalog.

Is NSN 4730-00-345-8703 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.
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