The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-995-6705, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-995-6705 |
| Primary Part Number | 3-50381-1 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Countersink Angle in Deg | 15.0 |
| FSC Application Data | VALVE,DIVERTER,STARTING AIR |
| First Step Diameter | 1.0000 INCHES NOMINAL IN |
| End Diameter | 0.7500 INCHES NOMINAL IN |
| Countersink Diameter | 0.7020 INCHES MINIMUM AND 0.7070 INCHES MAXIMUM IN |
| Distance From End to First Step | 0.3600 INCHES NOMINAL IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Surface Treatment | PASSIVATE |
| Chamfer Angle in Deg | 15.0 |
| Bore Diameter | 0.6400 INCHES MINIMUM AND 0.6450 INCHES MAXIMUM IN |
| Material | STEEL |
| 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 |
|---|---|
| 3-50381-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 3-50381-1 | 5/9 Secondary reference Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 3-50381-1 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
NSN 5340-00-995-6705 is a Seat,helical Compression Spring, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-995-6705 has 1 manufacturer part number on file: 3-50381-1 (Northrop Grumman Systems Corporation).
Key specifications for 3-50381-1: Overall Height: 0.4250 INCHES MINIMUM AND 0.4350 INCHES MAXIMUM IN; Countersink Angle in Deg: 15.0; FSC Application Data: VALVE,DIVERTER,STARTING AIR; First Step Diameter: 1.0000 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.