The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-00-443-2628, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 3 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. 2 items share 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 | 5340-00-443-2628 |
| Primary Part Number | 86028 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Triumph Engine Control Systems Llc |
| Status | ACTIVE |
| Material Document and Classification | AMS 5516 ASSN STD SINGLE MATERIAL RESPONSE |
| Casehardening Indicator | NOT CASEHARDENED |
| Material | STEEL COMP 302 |
| 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 |
|---|---|
| 86028 PRIMARY | Triumph Engine Control Systems Llc (USA) |
NSN 5340-00-443-2628 is a Retainer,helical Compression Spr, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-443-2628 has 1 manufacturer part number on file: 86028 (Triumph Engine Control Systems Llc).
2 possible matches (shared part number, not a government interchangeability claim): 5962-01-271-1783, 5965-01-441-8697. Verify interchangeability with system specifications before substitution.
Key specifications for 86028: Material Document and Classification: AMS 5516 ASSN STD SINGLE MATERIAL RESPONSE; Casehardening Indicator: NOT CASEHARDENED; Material: STEEL COMP 302. 3 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.