The Nipple,tube, cataloged under National Stock Number 4730-01-561-9473, 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 Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-561-9473 |
| Primary Part Number | 4NP-316 |
| Item Name | Nipple,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok |
| Status | ACTIVE |
| 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 |
|---|---|
| 4NP-316 PRIMARY | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA) |
| Reference | Meaning |
|---|---|
| 100170 | D/9 Drawing number reference only Dh Instruments Inc. |
NSN 4730-01-561-9473 is a Nipple,tube, manufactured by Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-561-9473 has 1 manufacturer part number on file: 4NP-316 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok).
1 possible match (shared part number, not a government interchangeability claim): 7530-01-653-1488. Verify interchangeability with system specifications before substitution.
Key specifications for 4NP-316: Special Features: NP HEX NIPPLE, MALE NPT BOTH ENDS. 1/4 INCH PIPE SIZE BY 1-19/32 INCH LONG BY 9/32 INCH I.D. HEX SIZE IS 9/16 INCH. MATERIAL IS 316 STAINLESS STEEL. TEMPERATURE RATING IS -325 DEG. F TO 1200 DEG F. IN. 0 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.