Seat, Helical Compression Spring5340-01-281-8026

NSN 5340-01-281-8026 · NIIN 012818026

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

Government record, cited

Also searched as 5340-01-281-8026 · 5340012818026 · NIIN 012818026 · 01-281-8026 · FSC 5340 Hardware, Commercial

Nearby stock numbers ← 5340-01-281-7985 Handwheel · 5340-01-281-8033 →

Features

Seat,helical Compression Spring — FSC 5340
First Step Diameter: 0.8750 INCHES NOMINAL IN
End Diameter: 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
Surface Treatment Document and Classification: BAC5811 TY4 CL1 FSCM 82918 MFR REF SINGLE TREATMENT RESPONSE
Design Type: SOLID
Material Document and Classification: AMS 5659 ASSN STD SINGLE MATERIAL RESPONSE
First Step Length: 0.0600 INCHES NOMINAL IN
Surface Treatment: LUBRICANT DRY FILM

Identification

NSN: 5340-01-281-8026
NIIN: 012818026
FSC: 5340 — Hardware, Commercial
FSG: 53 — Hardware and Abrasives

General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-281-8026, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications

Parameter	Value
NSN	5340-01-281-8026
Item Name	Seat,helical Compression Spring
FSC / FSG	5340 / 53 — Hardware, Commercial
Status	ACTIVE
First Step Diameter	0.8750 INCHES NOMINAL IN
End Diameter	0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
Surface Treatment Document and Classification	BAC5811 TY4 CL1 FSCM 82918 MFR REF SINGLE TREATMENT RESPONSE
Design Type	SOLID
Material Document and Classification	AMS 5659 ASSN STD SINGLE MATERIAL RESPONSE
First Step Length	0.0600 INCHES NOMINAL IN
Surface Treatment	LUBRICANT DRY FILM
Material	STEEL COMP XM-12

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
405-10130-503	3/2 Design control — primary reference U.S. Government activity

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 5340-01-281-8026?

NSN 5340-01-281-8026 is a Seat,helical Compression Spring, classified under FSC 5340, Hardware, Commercial. Status: active.

What are the specifications of 5340-01-281-8026?

Key specifications for 5340-01-281-8026: Overall Height: 1.7500 INCHES NOMINAL IN; First Step Diameter: 0.8750 INCHES NOMINAL IN; End Diameter: 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN; Surface Treatment Document and Classification: BAC5811 TY4 CL1 FSCM 82918 MFR REF SINGLE TREATMENT RESPONSE. 8 specifications are documented in the U.S. Government catalog.

Is NSN 5340-01-281-8026 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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