The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-01-040-5984, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Triumph Thermal Systems, Llc. Government technical data includes 7 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 | 5340-01-040-5984 |
| Primary Part Number | U537457 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Triumph Thermal Systems, Llc |
| Status | ACTIVE |
| Body Outside Diameter | 5.530 INCHES NOMINAL IN |
| Body Inside Diameter | 5.510 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Lip Thickness | 0.020 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE |
| Material | STEEL CORROSION RESISTING |
| End Hole Diameter | 5.090 INCHES NOMINAL IN |
| 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 |
|---|---|
| U537457 PRIMARY | Triumph Thermal Systems, Llc (USA) |
NSN 5340-01-040-5984 is a Retainer,helical Compression Spr, manufactured by Triumph Thermal Systems, Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-040-5984 has 1 manufacturer part number on file: U537457 (Triumph Thermal Systems, Llc).
Key specifications for U537457: Overall Height: 0.260 INCHES NOMINAL IN; Body Outside Diameter: 5.530 INCHES NOMINAL IN; Body Inside Diameter: 5.510 INCHES NOMINAL IN; Casehardening Indicator: NOT CASEHARDENED. 7 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.