The Coupling Assembly,quick Disconne, cataloged under National Stock Number 4730-01-253-6870, 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 Pdi Ground Support Systems, Inc.. Government technical data includes 9 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 | 4730-01-253-6870 |
| Primary Part Number | 8520-1 |
| Item Name | Coupling Assembly,quick Disconne |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Pdi Ground Support Systems, Inc. |
| Status | ACTIVE |
| Connection Style | PLAIN FIRST FLUID END CONNECTION |
| Connection Type | THREADED INTERNAL PIPE FIRST FLUID END CONNECTION |
| Style Designator | COUPLING ASSEMBLY |
| Leg Length | 0.290 INCHES NOMINAL IN |
| Nominal Thread Size | 0.125 INCHES FIRST FLUID END CONNECTION IN |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL OVERALL |
| Quick Disconnect Method | PUSH-PULL ALL ENDS |
| Thread Series Designator | NPT FIRST FLUID END CONNECTION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4730-01-253-6870 is a Coupling Assembly,quick Disconne, manufactured by Pdi Ground Support Systems, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-253-6870 has 2 manufacturer part numbers on file: 16-5249 (Trailer Component Manufacturing Inc.), 8520-1 (Pdi Ground Support Systems, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-348-6333. Verify interchangeability with system specifications before substitution.
Key specifications for 8520-1: Connection Style: PLAIN FIRST FLUID END CONNECTION; Connection Type: THREADED INTERNAL PIPE FIRST FLUID END CONNECTION; Style Designator: COUPLING ASSEMBLY; Overall Length: 2.440 INCHES NOMINAL IN. 9 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.