The Tubing Assembly,nonmetallic, cataloged under National Stock Number 4720-00-452-6554, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Rolls-Royce Plc Div Defense (europe). Government technical data includes 16 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. 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 | 4720-00-452-6554 |
| Primary Part Number | B420630 |
| Item Name | Tubing Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Rolls-Royce Plc Div Defense (europe) |
| Status | ACTIVE |
| Measuring Method and Length | 8.750 INCHES NOMINAL OVERALL IN |
| Connection Style | SWIVEL NUT, FLARELESS FIRST END |
| End Connection Design | STRAIGHT FIRST END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.312 INCHES NOMINAL IN |
| Features Provided | IDENTICAL ENDS |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 10.0 MILLIMETERS FIRST END MM |
| Seat Angle | 12.5 DEGREES FIRST END |
| Exterior Color | BLACK |
| Inside Diameter | 0.188 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Thread Class | 2B FIRST END |
| Material | PLASTIC POLYVINYL CHLORIDE (PVC) TUBE |
| Thread Series Designator | ISO M FIRST END |
| 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 |
|---|---|
| B420630 PRIMARY | Rolls-Royce Plc Div Defense (europe) (GBR) |
| SA7670409-001 | Rolls-Royce Plc Div Defense (europe) (GBR) |
NSN 4720-00-452-6554 is a Tubing Assembly,nonmetallic, manufactured by Rolls-Royce Plc Div Defense (europe), classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-452-6554 has 2 manufacturer part numbers on file: B420630 (Rolls-Royce Plc Div Defense (europe)), SA7670409-001 (Rolls-Royce Plc Div Defense (europe)).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-166-4580. Verify interchangeability with system specifications before substitution.
Key specifications for B420630: Measuring Method and Length: 8.750 INCHES NOMINAL OVERALL IN; Connection Style: SWIVEL NUT, FLARELESS FIRST END; End Connection Design: STRAIGHT FIRST END; Connection Type: THREADED INTERNAL TUBE FIRST END. 16 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.