The Packing Nut, cataloged under National Stock Number 4730-00-606-3876, 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 Us Army Aviation and Missile Command. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-606-3876 |
| Primary Part Number | 8167121 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Seat Angle in Deg | 90.0 |
| Hole or Slot Quantity | 4 |
| Thread Length | 0.710 INCHES NOMINAL IN |
| Style Designator | ROUND, EXTERNAL THREAD, INVERTED FLARE |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 1.500-12 |
| Screw Thread Series Designator | UNF |
| Thread Class | 3A A |
| Major Unthreaded Outside Diameter | 1.500 INCHES NOMINAL IN |
| Screw Thread Location | EXTERNAL |
| Material | COPPER ALLOY |
| Smallest Inside Diameter | 0.635 INCHES NOMINAL IN |
| Hole Diameter | 0.125 INCHES NOMINAL IN |
| 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 |
|---|---|
| 8167121 | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 8167121 | 3/9 Design control — primary reference Yorde Machine Products Co |
NSN 4730-00-606-3876 is a Packing Nut, manufactured by Us Army Aviation and Missile Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-606-3876 has 1 manufacturer part number on file: 8167121 (Us Army Aviation and Missile Command).
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-516-8726, 3110-01-641-5539. Verify interchangeability with system specifications before substitution.
Key specifications for 8167121: Seat Angle in Deg: 90.0; Hole or Slot Quantity: 4; Thread Length: 0.710 INCHES NOMINAL IN; Style Designator: ROUND, EXTERNAL THREAD, INVERTED FLARE. 14 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.