The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-01-154-2983, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Martin-Baker Aircraft Company Limited. Government technical data includes 10 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 | 5340-01-154-2983 |
| Primary Part Number | MBEU-68380 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Martin-Baker Aircraft Company Limited |
| Status | ACTIVE |
| Flange Diameter | 2.960 INCHES NOMINAL IN |
| FSC Application Data | PARACHUTE PACKING PRESS |
| Flange Thickness | 0.500 INCHES NOMINAL IN |
| Body Outside Diameter | 1.970 INCHES NOMINAL IN |
| Style Designator | PARALLEL |
| Mounting Hole Diameter | 0.190 INCHES NOMINAL IN |
| Body Inside Diameter | 1.375 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN |
| Lip Thickness | 0.500 INCHES NOMINAL IN |
| Bolt Circle Diameter | 2.562 INCHES NOMINAL IN |
| End Hole Diameter | 0.687 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| 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 |
|---|---|
| MBEU-68380 PRIMARY | Martin-Baker Aircraft Company Limited (GBR) |
NSN 5340-01-154-2983 is a Retainer,helical Compression Spr, manufactured by Martin-Baker Aircraft Company Limited, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-154-2983 has 1 manufacturer part number on file: MBEU-68380 (Martin-Baker Aircraft Company Limited).
Key specifications for MBEU-68380: Flange Diameter: 2.960 INCHES NOMINAL IN; Overall Height: 2.750 INCHES NOMINAL IN; FSC Application Data: PARACHUTE PACKING PRESS; Flange Thickness: 0.500 INCHES NOMINAL IN. 10 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.