Seat, Helical Compression Spring5340-01-140-4205

NSN 5340-01-140-4205 · NIIN 011404205

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

Government record, cited

Also searched as 5340-01-140-4205 · 5340011404205 · NIIN 011404205 · 01-140-4205 · FSC 5340 Hardware, Commercial · 10112723 · 268118-1

Nearby stock numbers ← 5340-01-140-4195 Retainer, Helical Compression Spr · 5340-01-140-4206 Seat, Helical Compression Spring →

Features

Seat,helical Compression Spring — FSC 5340
First Step Diameter: 0.5000 INCHES NOMINAL IN
End Diameter: 0.3540 INCHES NOMINAL IN
Surface Treatment Document and Classification: PS13201, CLASS 1, TYPE 2, MCDONNELL DOUGLAS CORP MFR REF SINGLE TREATMENT RESPONSE
Distance From End to First Step: 0.0400 INCHES NOMINAL IN
Design Type: SOLID
Style Designator: SEAT
Surface Treatment: ANODIZE

Identification

NSN: 5340-01-140-4205
NIIN: 011404205
FSC: 5340 — Hardware, Commercial
FSG: 53 — Hardware and Abrasives

General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-140-4205, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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. Unit of issue: EA.

Technical Specifications

Parameter	Value
NSN	5340-01-140-4205
Item Name	Seat,helical Compression Spring
FSC / FSG	5340 / 53 — Hardware, Commercial
Status	ACTIVE
First Step Diameter	0.5000 INCHES NOMINAL IN
End Diameter	0.3540 INCHES NOMINAL IN
Surface Treatment Document and Classification	PS13201, CLASS 1, TYPE 2, MCDONNELL DOUGLAS CORP MFR REF SINGLE TREATMENT RESPONSE
Distance From End to First Step	0.0400 INCHES NOMINAL IN
Design Type	SOLID
Style Designator	SEAT
Surface Treatment	ANODIZE
Chamfer Angle in Deg	30.0
Bore Diameter	0.3300 INCHES NOMINAL IN
Material	ALUMINUM ALLOY

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
Unit of Issue	EA

Cross-Reference Index

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

Reference documents

Reference	Meaning
10112723	6/9 Informative reference only Nimikkeistokeskus Ncb Finland
268118-1	3/2 Design control — primary reference U.S. Government activity

Frequently Asked Questions

What is NSN 5340-01-140-4205?

NSN 5340-01-140-4205 is a Seat,helical Compression Spring, classified under FSC 5340, Hardware, Commercial. Status: active.

What are the specifications of 5340-01-140-4205?

Key specifications for 5340-01-140-4205: Overall Height: 0.0900 INCHES NOMINAL IN; First Step Diameter: 0.5000 INCHES NOMINAL IN; End Diameter: 0.3540 INCHES NOMINAL IN; Surface Treatment Document and Classification: PS13201, CLASS 1, TYPE 2, MCDONNELL DOUGLAS CORP MFR REF SINGLE TREATMENT RESPONSE. 10 specifications are documented in the U.S. Government catalog.

Is NSN 5340-01-140-4205 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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