PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

N27978Seat,helical Compression Spring

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 5340-01-111-3155 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-111-3155 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-111-3155. Primary manufacturer part number: N27978.
Features
  • Seat,helical Compression Spring — FSC 5340
  • Material: COPPER ALLOY 836
  • Material Document and Classification: ASTM B62 ASSN STD SINGLE MATERIAL RESPONSE
  • 4 verified cross-references
  • Primary manufacturer: Leslie Controls, Inc. Dba Leslie Controls Inc
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Copper Alloy 836 construction
General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-111-3155, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-01-111-3155
Primary Part NumberN27978
Item NameSeat,helical Compression Spring
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
MaterialCOPPER ALLOY 836
Material Document and ClassificationASTM B62 ASSN STD SINGLE MATERIAL RESPONSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 4
4820-00-274-51077974893 INTERCHANGEABLE
Valve,check
U S Army Tank Automotive Command Amsta-Im-Mm
2520-00-734-7955 INTERCHANGEABLE
Shaft
4710-01-547-6280118-6653 INTERCHANGEABLE
Tube,bent,metallic
Caterpillar Inc Div Caterpillar Defense
4320-01-724-055527978 INTERCHANGEABLE
Plate,wear,rotary Pump
Industrial Technologies and Services Llc
Cross-Reference Index
Part NumberManufacturer
N27978 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
27978 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
18356 N PC 17 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
27978 Lineta Engineering Und Handelsgesell-Schaft Mbh (DEU)
Related Parts
4820-00-274-5107INTERCHANGEABLE
VALVE,CHECK
7974893
2520-00-734-7955INTERCHANGEABLE
SHAFT
4710-01-547-6280INTERCHANGEABLE
TUBE,BENT,METALLIC
118-6653
4320-01-724-0555INTERCHANGEABLE
PLATE,WEAR,ROTARY PUMP
27978

Frequently Asked Questions

What is NSN 5340-01-111-3155?

NSN 5340-01-111-3155 is a Seat,helical Compression Spring, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-111-3155?

NSN 5340-01-111-3155 has 4 cross-referenced part numbers: N27978 (Leslie Controls, Inc. Dba Leslie Controls Inc), 27978 (Leslie Controls, Inc. Dba Leslie Controls Inc), 18356 N PC 17 (Leslie Controls, Inc. Dba Leslie Controls Inc), 27978 (Lineta Engineering Und Handelsgesell-Schaft Mbh).

What NSN replaces 5340-01-111-3155?

There are 4 known substitutes for 5340-01-111-3155: 4820-00-274-5107, 2520-00-734-7955, 4710-01-547-6280 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of N27978?

Key specifications for N27978: Material: COPPER ALLOY 836; Material Document and Classification: ASTM B62 ASSN STD SINGLE MATERIAL RESPONSE. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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