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NSN 4730-00-203-3687Government record, cited
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Cross, Tube4730-00-203-3687

NSN 4730-00-203-3687 · NIIN 002033687
FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings
Government record, cited
Also searched as  4730-00-203-3687 · 4730002033687 · NIIN 002033687 · 00-203-3687 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · AS18280 · AS21906 · AS18280 · MS21906-4 · AS21906
Nearby stock numbers  ·
L 0.875 INCHES NOMINAL ALL ENDS IN UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS HOSE FITTING
4730-00-203-3687 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
  • Cross,tube — FSC 4730
  • Connection Style: FLARELESS (TUBE) ALL ENDS
  • Connection Type: THREADED EXTERNAL TUBE ALL ENDS
  • Nominal Outside Diameter Tube Accommodated: 0.250 INCHES ALL ENDS IN
  • Leg Length: 0.875 INCHES NOMINAL ALL ENDS IN
  • Nominal Thread Size: 0.438 INCHES ALL ENDS IN
  • Seat Angle: 12.0 DEGREES ALL ENDS
  • Specification/standard Data: 96906-MS21906 GOVERNMENT STANDARD
Identification
  • NSN: 4730-00-203-3687
  • NIIN: 002033687
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
General Description

The Cross,tube, cataloged under National Stock Number 4730-00-203-3687, 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11 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government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
NSN4730-00-203-3687
Item NameCross,tube
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
StatusACTIVE
Connection StyleFLARELESS (TUBE) ALL ENDS
Connection TypeTHREADED EXTERNAL TUBE ALL ENDS
Nominal Outside Diameter Tube Accommodated0.250 INCHES ALL ENDS IN
Leg Length0.875 INCHES NOMINAL ALL ENDS IN
Nominal Thread Size0.438 INCHES ALL ENDS IN
Seat Angle12.0 DEGREES ALL ENDS
Specification/standard Data96906-MS21906 GOVERNMENT STANDARD
Surface TreatmentCADMIUM OVERALL
Thread Class3A ALL ENDS A
MaterialSTEEL OVERALL
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 10
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-00-289-5438 POSSIBLE MATCH
CROSS,TUBE
Possible match (shared part number)
4730-00-289-5854MS21906W16 POSSIBLE MATCH
CROSS,TUBE
Possible match (shared part number)Sae International Dba Sae International
4730-00-595-0381MS21906W4 POSSIBLE MATCH
CROSS,TUBE
Possible match (shared part number)Sae International Dba Sae International
4730-00-720-1515MS21906J4 POSSIBLE MATCH
CROSS,TUBE
Possible match (shared part number)Sae International Dba Sae International
4730-00-990-3451MS21906V8P POSSIBLE MATCH
CROSS,TUBE
Possible match (shared part number)Sae International Dba Sae International
4730-01-542-5919MS21906V10P POSSIBLE MATCH
CROSS,TUBE
Possible match (shared part number)Sae International Dba Sae International
4730-01-542-5923MS21906V12P POSSIBLE MATCH
CROSS,TUBE
Possible match (shared part number)Sae International Dba Sae International
4730-01-542-5924MS21906V4P POSSIBLE MATCH
CROSS,TUBE
Possible match (shared part number)Sae International Dba Sae International
4730-01-542-5926MS21906V5P POSSIBLE MATCH
CROSS,TUBE
Possible match (shared part number)Sae International Dba Sae International
4730-01-542-5928MS21906V6P POSSIBLE MATCH
CROSS,TUBE
Possible match (shared part number)Sae International Dba Sae International
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
ReferenceMeaning
AS18280 5/9 Secondary reference
U.S. Government activity
AS21906 5/9 Secondary reference
U.S. Government activity
AS18280 5/1 Secondary reference
Sae International Dba Sae International
MS21906-4 2/2 Government specification standardization
U.S. Government activity
AS21906 5/1 Secondary reference
Sae International Dba Sae International
Related Parts
4730-00-289-5438POSSIBLE MATCH
CROSS,TUBE
4730-00-289-5854POSSIBLE MATCH
CROSS,TUBE
MS21906W16
4730-00-595-0381POSSIBLE MATCH
CROSS,TUBE
MS21906W4
4730-00-720-1515POSSIBLE MATCH
CROSS,TUBE
MS21906J4
4730-00-990-3451POSSIBLE MATCH
CROSS,TUBE
MS21906V8P
4730-01-542-5919POSSIBLE MATCH
CROSS,TUBE
MS21906V10P
4730-01-542-5923POSSIBLE MATCH
CROSS,TUBE
MS21906V12P
4730-01-542-5924POSSIBLE MATCH
CROSS,TUBE
MS21906V4P
4730-01-542-5926POSSIBLE MATCH
CROSS,TUBE
MS21906V5P
4730-01-542-5928POSSIBLE MATCH
CROSS,TUBE
MS21906V6P

Frequently Asked Questions

What is NSN 4730-00-203-3687?

NSN 4730-00-203-3687 is a Cross,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What NSN replaces 4730-00-203-3687?

10 possible matches (shared part number, not a government interchangeability claim): 4730-00-289-5438, 4730-00-289-5854, 4730-00-595-0381. Verify interchangeability with system specifications before substitution.

What are the specifications of 4730-00-203-3687?

Key specifications for 4730-00-203-3687: Connection Style: FLARELESS (TUBE) ALL ENDS; Connection Type: THREADED EXTERNAL TUBE ALL ENDS; Nominal Outside Diameter Tube Accommodated: 0.250 INCHES ALL ENDS IN; Leg Length: 0.875 INCHES NOMINAL ALL ENDS IN. 11 specifications are documented in the U.S. Government catalog.

Is NSN 4730-00-203-3687 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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