Seat, Helical Compression Spring5340-00-342-3458

NSN 5340-00-342-3458 · NIIN 003423458

FSC 5340 — Hardware, Commercial · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5340-00-342-3458 · 5340003423458 · NIIN 003423458 · 00-342-3458 · FSC 5340 Hardware, Commercial · S749I203 · S749I203

Nearby stock numbers ← 5340-00-342-3451 · 5340-00-342-3459 Seat, Helical Compression Spring →

Features

Seat,helical Compression Spring — FSC 5340
First Step Diameter: 0.4060 INCHES NOMINAL IN
End Diameter: 1.0000 INCHES NOMINAL IN
Seat Angle in Deg: 30.0
Second End Diameter: 1.5940 INCHES NOMINAL IN
Distance From End to First Step: 0.2190 INCHES NOMINAL IN
Design Type: SOLID
Style Designator: SEAT

Identification

NSN: 5340-00-342-3458
NIIN: 003423458
FSC: 5340 — Hardware, Commercial
FSG: 53 — Hardware and Abrasives

General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-342-3458, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5340-00-342-3458
Item Name	Seat,helical Compression Spring
FSC / FSG	5340 / 53 — Hardware, Commercial
Status	ACTIVE
First Step Diameter	0.4060 INCHES NOMINAL IN
End Diameter	1.0000 INCHES NOMINAL IN
Seat Angle in Deg	30.0
Second End Diameter	1.5940 INCHES NOMINAL IN
Distance From End to First Step	0.2190 INCHES NOMINAL IN
Design Type	SOLID
Style Designator	SEAT
Counterbore Length	0.6200 INCHES NOMINAL IN
Second Step Diameter	2.8120 INCHES NOMINAL IN
Bore Taper in Deg	6.0
First Step Length	0.0940 INCHES NOMINAL IN
Chamfer Angle in Deg	20.0
Bore Diameter	0.7190 INCHES NOMINAL IN
Material	STEEL

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code	X

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
S749I203	3/9 Design control — primary reference Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc
S749I203	5/9 Secondary reference Eagle Crusher Co Inc Dba Stedman Machine Co

No interchangeability data on file.

Other items in FSC 5340 — Hardware, Commercial

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5340-00-000-0068

COVER,ACCESS

5340-00-000-0132

SEAT,HELICAL COMPRESSION SPRING

5340-00-000-8150

5340-00-000-8150 · Item name not on file

5340-00-001-1251

5340-00-001-1251 · Item name not on file

5340-00-001-1264

STRAP,WEBBING

5340-00-001-1265

STRAP,WEBBING

5340-00-001-1266

STRAP,WEBBING

5340-00-001-1275

HANDLE,DOOR

Frequently Asked Questions

What is NSN 5340-00-342-3458?

NSN 5340-00-342-3458 is a Seat,helical Compression Spring, classified under FSC 5340, Hardware, Commercial. Status: active.

What are the specifications of 5340-00-342-3458?

Key specifications for 5340-00-342-3458: Overall Height: 0.4220 INCHES NOMINAL IN; First Step Diameter: 0.4060 INCHES NOMINAL IN; End Diameter: 1.0000 INCHES NOMINAL IN; Seat Angle in Deg: 30.0. 14 specifications are documented in the U.S. Government catalog.

Is NSN 5340-00-342-3458 hazardous material?

Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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