The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-054-6386, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Honeywell International Inc. Div Aerospace - Torrance. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-054-6386 |
| Primary Part Number | 585257-1 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Countersink Angle in Deg | 45.0 |
| First Step Diameter | 0.2630 INCHES MINIMUM AND 0.2640 INCHES MAXIMUM IN |
| End Diameter | 0.1315 INCHES MINIMUM AND 0.1325 INCHES MAXIMUM IN |
| Countersink Diameter | 0.1315 INCHES MINIMUM AND 0.1325 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
| Distance From End to First Step | 0.1340 INCHES MINIMUM AND 0.1350 INCHES MAXIMUM IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE |
| Counterbore Length | 0.1610 INCHES MINIMUM AND 0.1670 INCHES MAXIMUM IN |
| Second Step Diameter | 0.4190 INCHES MINIMUM AND 0.4200 INCHES MAXIMUM IN |
| Counterbore Diameter | 0.0870 INCHES MINIMUM AND 0.0900 INCHES MAXIMUM IN |
| First Step Length | 0.0245 INCHES MINIMUM AND 0.0265 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE |
| Bore Diameter | 0.0420 INCHES MINIMUM AND 0.0440 INCHES MAXIMUM IN |
| Material | STEEL COMP 630 |
| 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 |
NSN 5340-01-054-6386 is a Seat,helical Compression Spring, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-054-6386 has 2 manufacturer part numbers on file: 585257-1 (Honeywell International Inc. Div Aerospace - Torrance), 42679A (Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S).
Key specifications for 585257-1: Overall Height: 0.1910 INCHES MINIMUM AND 0.1920 INCHES MAXIMUM IN; Countersink Angle in Deg: 45.0; First Step Diameter: 0.2630 INCHES MINIMUM AND 0.2640 INCHES MAXIMUM IN; End Diameter: 0.1315 INCHES MINIMUM AND 0.1325 INCHES MAXIMUM IN. 16 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.