The Tube Assembly,metal, cataloged under National Stock Number 4710-00-657-9477, is classified within Federal Supply Class 4710 (Pipe, Tube and Rigid Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Coventry Manufacturing Company, Inc. Dba Coventry Manufacturing Co Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 4710-00-657-9477 |
| Primary Part Number | 363800-77 |
| Item Name | Tube Assembly,metal |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Coventry Manufacturing Company, Inc. Dba Coventry Manufacturing Co Inc |
| Status | ACTIVE |
| Seat Angle in Deg | 33.0 SINGLE END33.0 SINGLE END |
| Design Form | PREBENTPREBENT |
| Mating End Quantity | 1 SINGLE END1 SINGLE END |
| Material Document and Classification | MIL-T-6845 MIL SPEC SINGLE MATERIAL RESPONSE TUBINGMIL-T-6845 MIL SPEC SINGLE MATERIAL RESPONSE TUBING |
| Wall Thickness | 0.020 INCHES NOMINAL0.020 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND FIRST ENDRIGHT-HAND FIRST END |
| Nominal Thread Size | 0.438 INCHES FIRST END0.438 INCHES FIRST END IN |
| End Connection Style | SWIVEL NUT, FLARED FIRST ENDSWIVEL NUT, FLARED FIRST END |
| End Connection Style | SWIVEL NUT, INVERTED FLARE SECOND ENDSWIVEL NUT, INVERTED FLARE SECOND END |
| Tube Outside Diameter | 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN |
| Thread Class | 3B SINGLE END3B SINGLE END |
| Material | STEEL COMP 304 TUBINGSTEEL COMP 304 TUBING |
| Material | STEEL SINGLE ENDSTEEL SINGLE END |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) SINGLE ENDUNIFIED NATIONAL JOINT FINE (UNJF) SINGLE END |
| End Connection Spec/std | AN818-4,MS20819-4AN818-4,MS20819-4 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 363800-77 | Coventry Manufacturing Company, Inc. Dba Coventry Manufacturing Co Inc (USA) |
| 363800-77 | Rohr, Inc. Dba Rohr Industries Inc Div Rohr Inc., a Part of Collins Aerospace (USA) |
| Reference | Meaning |
|---|---|
| 363800-77 | 3/2 Design control — primary reference U.S. Government activity |
| 363800-77 | 5/9 Secondary reference Lockheed Martin Services, Llc |
NSN 4710-00-657-9477 is a Tube Assembly,metal, manufactured by Coventry Manufacturing Company, Inc. Dba Coventry Manufacturing Co Inc, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-00-657-9477 has 2 manufacturer part numbers on file: 363800-77 (Coventry Manufacturing Company, Inc. Dba Coventry Manufacturing Co Inc), 363800-77 (Rohr, Inc. Dba Rohr Industries Inc Div Rohr Inc., a Part of Collins Aerospace).
Key specifications for 363800-77: Seat Angle in Deg: 33.0 SINGLE END33.0 SINGLE END; Design Form: PREBENTPREBENT; Mating End Quantity: 1 SINGLE END1 SINGLE END; Material Document and Classification: MIL-T-6845 MIL SPEC SINGLE MATERIAL RESPONSE TUBINGMIL-T-6845 MIL SPEC SINGLE MATERIAL RESPONSE TUBING. 15 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.
NSN 4710-00-657-9477 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.