The Insert,stuffing Box, cataloged under National Stock Number 4820-01-093-3785, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Automatic Switch Company Dba Asco. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-093-3785 |
| Primary Part Number | 289710 |
| Item Name | Insert,stuffing Box |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Automatic Switch Company Dba Asco |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,CORROSION RESISTING,0.562 IN. OD,0.330 IN. BORE DIA,ONE END OF BORE TAPERED 55.0 DEG BY 0.085 IN. DEEP,0.754 IN. O/A LG 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 |
|---|---|
| 289710 PRIMARY | Automatic Switch Company Dba Asco (USA) |
| Reference | Meaning |
|---|---|
| AV89-853 PIECE 24 | 5/9 Secondary reference Automatic Switch Company Dba Asco |
| FV-24-030-3 | 5/9 Secondary reference Automatic Switch Company Dba Asco |
| 289731 | 5/9 Secondary reference Automatic Switch Company Dba Asco |
| 024-030-003 | 5/9 Secondary reference Automatic Switch Company Dba Asco |
NSN 4820-01-093-3785 is a Insert,stuffing Box, manufactured by Automatic Switch Company Dba Asco, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-093-3785 has 1 manufacturer part number on file: 289710 (Automatic Switch Company Dba Asco).
2 possible matches (shared part number, not a government interchangeability claim): 5330-01-105-7117, 5905-01-462-3147. Verify interchangeability with system specifications before substitution.
Key specifications for 289710: General Characteristics Item Description: STEEL,CORROSION RESISTING,0.562 IN. OD,0.330 IN. BORE DIA,ONE END OF BORE TAPERED 55.0 DEG BY 0.085 IN. DEEP,0.754 IN. O/A LG IN. 1 specification is 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.