The Locknut,tube Fitting, cataloged under National Stock Number 4730-00-160-1645, 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 Sae International Dba Sae International. Government technical data includes 12 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through both NSN and commercial part number lookups. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-160-1645 |
| Primary Part Number | MS9099-16 |
| Item Name | Locknut,tube Fitting |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Width Across Flats | 1.614 INCHES MINIMUM AND 1.627 INCHES MAXIMUM IN |
| Packing Recess Diameter | 1.536 INCHES MINIMUM AND 1.546 INCHES MAXIMUM IN |
| Thread Series | UN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.312 INCHES IN |
| Surface Treatment | ANODIZE OVERALL |
| Nut Style | TUBE FITTING LOCKNUT |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | ALUMINUM OVERALL |
| Nominal Tube Outside Diameter | 1.000 INCHES IN |
| Packing Recess Depth | 0.049 INCHES MINIMUM AND 0.059 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| MS9099-16 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| MS9099-16 | 5/9 Secondary reference Collins Engineering Corp |
| MS9099-16 | 5/9 Secondary reference Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company |
| MS9099-16 | 5/9 Secondary reference U.S. Government activity |
| MS9099-16 | 5/9 Secondary reference Adams Industries Inc a Sub of Banner Industries Inc |
| MS9099-16 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| AS90991 | 5/9 Secondary reference Sae International Dba Sae International |
| MS9099-16 | 5/9 Secondary reference Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| MS9099-16 | 5/9 Secondary reference U.S. Government activity |
| AS90991 | 5/9 Secondary reference U.S. Government activity |
| MS9099-16 | 5/9 Secondary reference Crown Fitting Co Inc |
| MS9099-16 | 5/9 Secondary reference Simon Paul Boiler and Welding Co |
| MS9099-16 | 5/9 Secondary reference Faber Enterprises, Inc. Div Faber Enterprise Inc |
| SAE-AS90991 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 4730-00-160-1645 is a Locknut,tube Fitting, manufactured by Sae International Dba Sae International, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-160-1645 has 1 manufacturer part number on file: MS9099-16 (Sae International Dba Sae International).
1 possible match (shared part number, not a government interchangeability claim): 4730-00-632-9006. Verify interchangeability with system specifications before substitution.
Key specifications for MS9099-16: Width Across Flats: 1.614 INCHES MINIMUM AND 1.627 INCHES MAXIMUM IN; Packing Recess Diameter: 1.536 INCHES MINIMUM AND 1.546 INCHES MAXIMUM IN; Thread Series: UN; Thread Direction: RIGHT-HAND. 12 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.