The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-991-4151, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Coke James and Sons. Government technical data includes 9 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-991-4151 |
| Primary Part Number | 470386 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Coke James and Sons |
| Status | ACTIVE |
| FSC Application Data | CONTROL ASSY,PRESSURE RATIO BLEED,2995004356898 710565 |
| Material Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Design Type | SOLID |
| Style Designator | SEAT |
| Counterbore Length | 0.4900 INCHES MINIMUM AND 0.5100 INCHES MAXIMUM IN |
| Second Step Diameter | 0.6600 INCHES MINIMUM AND 0.6800 INCHES MAXIMUM IN |
| Counterbore Diameter | 0.4550 INCHES MINIMUM AND 0.4650 INCHES MAXIMUM IN |
| Bore Diameter | 0.3380 INCHES MINIMUM AND 0.3400 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 470386 | Coke James and Sons (USA) |
| Reference | Meaning |
|---|---|
| 470386 | 5/9 Secondary reference Valco Mfg and Engineering Co |
| 470386 | 3/9 Design control — primary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 470386 | 5/2 Secondary reference U.S. Government activity |
| 470386 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 5340-00-991-4151 is a Seat,helical Compression Spring, manufactured by Coke James and Sons, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-991-4151 has 1 manufacturer part number on file: 470386 (Coke James and Sons).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-211-9923. Verify interchangeability with system specifications before substitution.
Key specifications for 470386: Overall Height: 1.1600 INCHES MINIMUM AND 1.2000 INCHES MAXIMUM IN; FSC Application Data: CONTROL ASSY,PRESSURE RATIO BLEED,2995004356898 710565; Material Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM; Design Type: SOLID. 9 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.