The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-060-1000, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S. 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 | 5340-01-060-1000 |
| Primary Part Number | 42537A |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S |
| Status | ACTIVE |
| First Step Diameter | 0.5650 INCHES MINIMUM AND 0.5700 INCHES MAXIMUM IN |
| End Diameter | 0.3020 INCHES MINIMUM AND 0.3220 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-A-8625, TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE |
| Distance From End to First Step | 0.0340 INCHES MINIMUM AND 0.0940 INCHES MAXIMUM IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Second Step Diameter | 0.7300 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN |
| First Step Length | 0.0830 INCHES MINIMUM AND 0.1030 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 42537A PRIMARY | Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S (USA) |
NSN 5340-01-060-1000 is a Seat,helical Compression Spring, manufactured by Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-060-1000 has 1 manufacturer part number on file: 42537A (Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S).
Key specifications for 42537A: Overall Height: 0.2400 INCHES MINIMUM AND 0.2600 INCHES MAXIMUM IN; First Step Diameter: 0.5650 INCHES MINIMUM AND 0.5700 INCHES MAXIMUM IN; End Diameter: 0.3020 INCHES MINIMUM AND 0.3220 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-A-8625, TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE. 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.