The Orifice Assembly, cataloged under National Stock Number 1005-01-238-9867, is classified within Federal Supply Class 1005 (Guns, Through 30mm) of the Weapons group. The manufacturer of record is Northrop Grumman Systems Corp Div Weapon System. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1005-01-238-9867 |
| Primary Part Number | 387-3955-3 |
| Item Name | Orifice Assembly |
| FSC / FSG | 1005 / 10 — Guns, Through 30mm |
| Manufacturer | Northrop Grumman Systems Corp Div Weapon System |
| Status | ACTIVE |
| General Characteristics Item Description | BOLT,RETAINER 1;PIN,THROTTLING 1;SPRING 1;BALL 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 387-3955-3 PRIMARY | Northrop Grumman Systems Corp Div Weapon System (USA) |
| Reference | Meaning |
|---|---|
| 387-3955-3 | 3/9 Design control — primary reference Alliant Techsystems Operations Llc |
| 387-3955-3 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| 387-3955-3 | 5/9 Secondary reference Am-Par Mfg Co Inc |
NSN 1005-01-238-9867 is a Orifice Assembly, manufactured by Northrop Grumman Systems Corp Div Weapon System, classified under FSC 1005, Guns, Through 30mm. Status: active.
NSN 1005-01-238-9867 has 1 manufacturer part number on file: 387-3955-3 (Northrop Grumman Systems Corp Div Weapon System).
Key specifications for 387-3955-3: General Characteristics Item Description: BOLT,RETAINER 1;PIN,THROTTLING 1;SPRING 1;BALL 1. 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.
NSN 1005-01-238-9867 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.