PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A531Retainer,helical Compression Spr

Essex Industries, Inc. Dba Essex Industries · NSN 5340-00-364-5672 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-364-5672 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-364-5672. Primary manufacturer part number: A531.
Features
  • Retainer,helical Compression Spr — FSC 5340
  • Casehardening Indicator: NOT CASEHARDENED
  • End Hole Diameter: 0.300 INCHES NOMINAL IN
  • Lip Thickness: 0.044 INCHES NOMINAL IN
  • Style Designator: IRREGULAR
  • Material: STEEL
  • Body Inside Diameter: 0.500 INCHES NOMINAL IN
  • Flange Diameter: 0.938 INCHES NOMINAL IN
Applications
  • Applications requiring Steel construction
General Description

The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-00-364-5672, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Essex Industries, Inc. Dba Essex Industries. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-364-5672
Primary Part NumberA531
Item NameRetainer,helical Compression Spr
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerEssex Industries, Inc. Dba Essex Industries
StatusCANCELLED
Casehardening IndicatorNOT CASEHARDENED
End Hole Diameter0.300 INCHES NOMINAL IN
Lip Thickness0.044 INCHES NOMINAL IN
Style DesignatorIRREGULAR
MaterialSTEEL
Body Inside Diameter0.500 INCHES NOMINAL IN
Flange Diameter0.938 INCHES NOMINAL IN
Body Outside Diameter0.687 INCHES NOMINAL IN
Flange Thickness0.044 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Unit of IssueEA
Verified Substitutes 5
5915-00-369-94474031907-0701 INTERCHANGEABLE
Filter,band Pass
Raytheon Company Dba Raytheon Co
5935-00-552-67919000-803H74210 INTERCHANGEABLE
Jack Box
Naval Ship Systems Command
4320-00-735-4406117-54 INTERCHANGEABLE
Pump,centrifugal
Blue Jay Manufacturing Co
5996-00-946-5149E621555 INTERCHANGEABLE
Amplifier,electronic Control
Raytheon Co
5130-01-349-6548A531 INTERCHANGEABLE
Wheel,abrasive
Edlund Co Inc
Cross-Reference Index
Part NumberManufacturer
A531 PRIMARY Essex Industries, Inc. Dba Essex Industries (USA)
Related Parts
5915-00-369-9447INTERCHANGEABLE
FILTER,BAND PASS
4031907-0701
5935-00-552-6791INTERCHANGEABLE
JACK BOX
9000-803H74210
4320-00-735-4406INTERCHANGEABLE
PUMP,CENTRIFUGAL
117-54
5996-00-946-5149INTERCHANGEABLE
AMPLIFIER,ELECTRONIC CONTROL
E621555
5130-01-349-6548INTERCHANGEABLE
WHEEL,ABRASIVE
A531

Frequently Asked Questions

What is NSN 5340-00-364-5672?

NSN 5340-00-364-5672 is a Retainer,helical Compression Spr, manufactured by Essex Industries, Inc. Dba Essex Industries, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-364-5672?

NSN 5340-00-364-5672 has 1 cross-referenced part number: A531 (Essex Industries, Inc. Dba Essex Industries).

What NSN replaces 5340-00-364-5672?

There are 5 known substitutes for 5340-00-364-5672: 5915-00-369-9447, 5935-00-552-6791, 4320-00-735-4406 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A531?

Key specifications for A531: Overall Height: 0.344 INCHES NOMINAL IN; Casehardening Indicator: NOT CASEHARDENED; End Hole Diameter: 0.300 INCHES NOMINAL IN; Lip Thickness: 0.044 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-364-5672 still in active supply?

NSN 5340-00-364-5672 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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