The Thread Piece,union, cataloged under National Stock Number 4730-01-195-6397, 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 Naval Sea Systems Command. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-195-6397 |
| Primary Part Number | SS-545-2104397 PC 1.1/4 IN IPS |
| Item Name | Thread Piece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Union End Thread Direction | RIGHT-HAND |
| End Connection Type | THREADED |
| Union End Thread Size | 1-1/8-12 |
| Seat Type | STRAIGHT FACE |
| Thread Direction | RIGHT-HAND |
| Thread Size | 1-1/8-12 |
| Screw Thread Series Designator | UNF |
| Union End Screw Thread Series Designator | UNF |
| Screw Thread Location | EXTERNAL |
| Material | COPPER ALLOY 715 |
| 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 |
|---|---|
| SS-545-2104397 PC 1.1/4 IN IPS PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| SS-545-2104397 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-195-6397 is a Thread Piece,union, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-195-6397 has 1 manufacturer part number on file: SS-545-2104397 PC 1.1/4 IN IPS (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-196-9211, 4730-01-196-9213. Verify interchangeability with system specifications before substitution.
Key specifications for SS-545-2104397 PC 1.1/4 IN IPS: Union End Thread Direction: RIGHT-HAND; End Connection Type: THREADED; Union End Thread Size: 1-1/8-12; Overall Length: 2.062 INCHES NOMINAL IN. 10 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.