The Coupling,tube, cataloged under National Stock Number 4730-01-280-8555, 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 Fairbanks Morse, Llc. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-280-8555 |
| Primary Part Number | T99637650012 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 BOLT AND 2 GASKET AND 2 LOCKNUT |
| Connection Style | CLAMPING W/ GASKET SEAL (TUBE) ALL ENDS |
| Nominal Overall Length | 4.000 INCHES IN |
| Connection Type | UNTHREADED INTERNAL TUBE ALL ENDS |
| Style Designator | COMPRESSION CLAMP TYPE (FLEXMASTER) |
| Nominal Outside Diameter Tube Accommodated | 2.250 INCHES ALL ENDS IN |
| Surface Treatment | ZINC OVERALL |
| Media for Which Designed | OIL SECOND RESPONSE |
| Media for Which Designed | AIR FIRST RESPONSE |
| Media for Which Designed | WATER THIRD RESPONSE |
| Material | STEEL RETAINER |
| Material | RUBBER SYNTHETIC GASKET |
| Material | STEEL SLEEVE |
| Material | STEEL CLAMP |
| 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 |
|---|---|
| T99637650012 PRIMARY | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| NH1625C225B0400 | 3/9 Design control — primary reference Aeroquip Corp Transportation Products Div Lawrence Plant |
| T99637650012 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-280-8555 is a Coupling,tube, manufactured by Fairbanks Morse, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-280-8555 has 1 manufacturer part number on file: T99637650012 (Fairbanks Morse, Llc).
Key specifications for T99637650012: Furnished Items and Quantity: 2 BOLT AND 2 GASKET AND 2 LOCKNUT; Connection Style: CLAMPING W/ GASKET SEAL (TUBE) ALL ENDS; Nominal Overall Length: 4.000 INCHES IN; Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS. 14 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.