The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-187-8416, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Legacy Am&m. Government technical data includes 3 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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-187-8416 |
| Primary Part Number | L5877112-003 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| FSC Application Data | AIRCRAFT HYDRAULIC SYSTEMS |
| Design Type | SOLID |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| L5877112-003 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
NSN 5340-01-187-8416 is a Seat,helical Compression Spring, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-187-8416 has 1 manufacturer part number on file: L5877112-003 (The Boeing Company Div Legacy Am&m).
Key specifications for L5877112-003: FSC Application Data: AIRCRAFT HYDRAULIC SYSTEMS; Design Type: SOLID; Special Features: DIMENSIONS IN INCHES;0.6900 LONG,0.3580 DIAMETER 0.4400 LONG,GROOVED 0.1430 FROM FIRST END,0.2070 WIDE,0.2480 DIAMETER DEEP,FIRST END DRILLED 0.0890 SPHERICAL BOTTOM HOLE DEPTH 90 DEGREE COUNTER-SUNK 0.1120-40UNJC-3B DIAMETER THREADS;SECOND END 0.0780 DIAMETER;0.2500 LONG; Material: ALUMINUM ALLOY. 3 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.
NSN 5340-01-187-8416 has DEMIL Code Q. 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.