PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

76771Seat,helical Compression Spring

Dresser, Llc · NSN 5340-00-375-2723 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-375-2723 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-375-2723. Primary manufacturer part number: 76771.
Features
  • Seat,helical Compression Spring — FSC 5340
  • Ridge Height: 0.0940 INCHES NOMINAL IN
  • Bore Taper in Deg: 7.3
  • Distance From Center to Beginning of Ridge: 0.5310 INCHES NOMINAL IN
  • Design Type: SOLID
  • FSC Application Data: CYLINDER HEAD ASSEMBLIES,DIESEL ENGINE
  • Distance From End to First Step: 0.1560 INCHES NOMINAL IN
  • End Diameter: 0.5630 INCHES NOMINAL IN
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel construction
General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-375-2723, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Dresser, Llc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-375-2723
Primary Part Number76771
Item NameSeat,helical Compression Spring
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerDresser, Llc
StatusACTIVE
Ridge Height0.0940 INCHES NOMINAL IN
Bore Taper in Deg7.3
Distance From Center to Beginning of Ridge0.5310 INCHES NOMINAL IN
Design TypeSOLID
FSC Application DataCYLINDER HEAD ASSEMBLIES,DIESEL ENGINE
Distance From End to First Step0.1560 INCHES NOMINAL IN
End Diameter0.5630 INCHES NOMINAL IN
MaterialSTEEL
Bore Diameter0.5280 INCHES MINIMUM AND 0.5330 INCHES MAXIMUM IN
First Step Diameter1.1720 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 9
5305-00-021-40026S8 INTERCHANGEABLE
Screw,cap,hexagon Head
Bath Iron Works Corporation
5305-00-367-1463PN193F1-23 INTERCHANGEABLE
Setscrew
Leslie Controls, Inc. Dba Leslie Controls Inc
5365-00-472-6194101861 INTERCHANGEABLE
Shim
Suntec Industries Inc Del Dba Suntec
1630-00-709-6360091-03600 INTERCHANGEABLE
Cylinder Assembly B
Aircraft Wheel and Brake, Llc Dba Cleveland Wheel and Brake Systems
4820-00-813-7450LT-50-6 INTERCHANGEABLE
Valve,restrictor Check
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
5950-00-827-0450913-6 INTERCHANGEABLE
Transformer,discriminator
Hewlett-Packard Company Dba HP
5310-01-124-50879136 INTERCHANGEABLE
Nut,self-Locking,hexagon
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
4820-01-241-882889040001 INTERCHANGEABLE
Parts Kit,ball Valve
Akron Brass Company
5998-01-733-52309136 INTERCHANGEABLE
Circuit Card Assembly
Technobox Inc
Cross-Reference Index
Part NumberManufacturer
76771 Aqua-Chem Inc Cleaver-Brooks Div (USA)
76771 PRIMARY Dresser, Llc (USA)
913-6 Aqua-Chem Inc Cleaver-Brooks Div (USA)
Related Parts
5305-00-021-4002INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
6S8
5305-00-367-1463INTERCHANGEABLE
SETSCREW
PN193F1-23
5365-00-472-6194INTERCHANGEABLE
SHIM
101861
1630-00-709-6360INTERCHANGEABLE
CYLINDER ASSEMBLY B
091-03600
4820-00-813-7450INTERCHANGEABLE
VALVE,RESTRICTOR CHECK
LT-50-6
5950-00-827-0450INTERCHANGEABLE
TRANSFORMER,DISCRIMINATOR
913-6
5310-01-124-5087INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
9136
4820-01-241-8828INTERCHANGEABLE
PARTS KIT,BALL VALVE
89040001
5998-01-733-5230INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
9136

Frequently Asked Questions

What is NSN 5340-00-375-2723?

NSN 5340-00-375-2723 is a Seat,helical Compression Spring, manufactured by Dresser, Llc, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-375-2723?

NSN 5340-00-375-2723 has 3 cross-referenced part numbers: 76771 (Aqua-Chem Inc Cleaver-Brooks Div), 76771 (Dresser, Llc), 913-6 (Aqua-Chem Inc Cleaver-Brooks Div).

What NSN replaces 5340-00-375-2723?

There are 9 known substitutes for 5340-00-375-2723: 5305-00-021-4002, 5305-00-367-1463, 5365-00-472-6194 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 76771?

Key specifications for 76771: Ridge Height: 0.0940 INCHES NOMINAL IN; Special Features: NOT CASEHARDENED; Bore Taper in Deg: 7.3; Distance From Center to Beginning of Ridge: 0.5310 INCHES NOMINAL IN. 12 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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