The Plug,vent, cataloged under National Stock Number 5340-01-596-5977, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 5 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-01-596-5977 |
| Primary Part Number | 8631T22 |
| Item Name | Plug,vent |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Length | 1.750 INCHES NOMINAL IN |
| End Connection Type | THREADED |
| Outside Diameter | 1.6875 INCHES NOMINAL IN |
| Material | PLASTIC POLYAMIDE NYLON |
| Thread Size and Series/type Designator | 3/8" MALE NPT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 8631T22 PRIMARY | Mcmaster-Carr Supply Co (USA) |
NSN 5340-01-596-5977 is a Plug,vent, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-596-5977 has 1 manufacturer part number on file: 8631T22 (Mcmaster-Carr Supply Co).
Key specifications for 8631T22: Length: 1.750 INCHES NOMINAL IN; End Connection Type: THREADED; Outside Diameter: 1.6875 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: BREATHER VENT WITH SPLASH GUARD. 5 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.