The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-01-439-5742, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Hamilton C W F & Co Ltd Hamilton Jet. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-439-5742 |
| Primary Part Number | 105279 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Hamilton C W F & Co Ltd Hamilton Jet |
| Status | ACTIVE |
| Body Outside Diameter | 69.8000 INCHES MINIMUM AND 69.8500 INCHES MAXIMUM IN |
| Style Designator | PARALLEL |
| Casehardening Indicator | NOT CASEHARDENED |
| Material | STEEL CORROSION RESISTING |
| End Hole Diameter | 40.0200 INCHES MINIMUM AND 40.0600 INCHES MAXIMUM 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 |
|---|---|
| 105279 | Hamilton C W F & Co Ltd Hamilton Jet (NZL) |
| Reference | Meaning |
|---|---|
| 105279 | 3/9 Design control — primary reference Hamilton C W F & Co Ltd |
| 10460402 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5340-01-439-5742 is a Retainer,helical Compression Spr, manufactured by Hamilton C W F & Co Ltd Hamilton Jet, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-439-5742 has 1 manufacturer part number on file: 105279 (Hamilton C W F & Co Ltd Hamilton Jet).
Key specifications for 105279: Overall Height: 18.0000 INCHES MINIMUM AND 18.3000 INCHES MAXIMUM IN; Body Outside Diameter: 69.8000 INCHES MINIMUM AND 69.8500 INCHES MAXIMUM IN; Style Designator: PARALLEL; Casehardening Indicator: NOT CASEHARDENED. 5 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.