The Plug,vent, cataloged under National Stock Number 5340-00-970-9973, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-970-9973 |
| Primary Part Number | 128HM10176-1 |
| Item Name | Plug,vent |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Vent Hole Diameter | 0.066 INCHES MAXIMUM IN |
| Length | 0.906 INCHES NOMINAL IN |
| Vent Hole Shape | ROUND |
| Thread Length | 0.618 INCHES NOMINAL IN |
| End Connection Type | THREADED |
| Material Document and Classification | QQ-A-225/9, T7351 FED SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 0.750 INCHES NOMINAL IN |
| Inside Diameter | 0.500 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Material | ALUMINUM ALLOY 7075 |
| Thread Size and Series/type Designator | 3/4-16 UNF |
| Vent Hole Quantity | 6 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 128HM10176-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 128HM10176-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5340-00-970-9973 is a Plug,vent, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-970-9973 has 1 manufacturer part number on file: 128HM10176-1 (Northrop Grumman Systems Corporation).
Key specifications for 128HM10176-1: Vent Hole Diameter: 0.066 INCHES MAXIMUM IN; Length: 0.906 INCHES NOMINAL IN; Vent Hole Shape: ROUND; Thread Length: 0.618 INCHES NOMINAL IN. 12 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.