The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-456-8909, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Tactair Fluid Controls Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-456-8909 |
| Primary Part Number | HP1142113-1 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Tactair Fluid Controls Inc |
| Status | ACTIVE |
| Countersink Angle in Deg | 45.0 |
| First Step Diameter | 0.3600 INCHES NOMINAL IN |
| End Diameter | 0.2700 INCHES NOMINAL IN |
| Countersink Diameter | 0.1800 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
| Distance From End to First Step | 0.1300 INCHES NOMINAL IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | PASSIVATE |
| Bore Diameter | 0.1680 INCHES MINIMUM AND 0.1720 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 |
|---|---|
| HP1142113-1 PRIMARY | Tactair Fluid Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| HP1142113-1 | 5/9 Secondary reference U.S. Government activity |
NSN 5340-00-456-8909 is a Seat,helical Compression Spring, manufactured by Tactair Fluid Controls Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-456-8909 has 1 manufacturer part number on file: HP1142113-1 (Tactair Fluid Controls Inc).
Key specifications for HP1142113-1: Overall Height: 0.1900 INCHES NOMINAL IN; Countersink Angle in Deg: 45.0; First Step Diameter: 0.3600 INCHES NOMINAL IN; End Diameter: 0.2700 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.