PartsTable TECHNICAL DATA SHEET

JULY 2026Technical Data Sheet

PM21812Spring

Name: PM21812
SKU: 5360-00-623-5421

Mason Electric Co. Dba Mason Controls · NSN 5360-00-623-5421 · FSC 5360 · No Item Name Available

Verified by PartsTable

NSN 5360-00-623-5421 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-623-5421. Primary manufacturer part number: PM21812.

5360-00-623-5421 — No Item Name Available illustration

Features

Spring — FSC 5360
6 verified cross-references
Primary manufacturer: Mason Electric Co. Dba Mason Controls

Applications

Mechanical energy storage
Vibration dampening
Return mechanism operation

General Description

The Spring, cataloged under National Stock Number 5360-00-623-5421, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Mason Electric Co. Dba Mason Controls. This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts

Item Name	Spring
FSC / FSG	5360 — No Item Name Available (FSG 53)
Manufacturers	Amphenol Corp Div Amphenol Aerospace Operations (CAGE 77820); Unison Industries Llc (CAGE 59501); Mason Electric Co. Dba Mason Controls (CAGE 81579)

Technical Specifications

Parameter	Value
NSN	5360-00-623-5421
Primary Part Number	PM21812
Item Name	Spring
FSC / FSG	5360 / 53 — No Item Name Available
Manufacturer	Mason Electric Co. Dba Mason Controls
Status	CANCELLED

Lifecycle & Compliance

Acquisition Status	CANCELLED
HAZMAT	No

⇄ Verified Substitutes 9

5930-00-140-418621812 INTERCHANGEABLE

Switch,liquid Level

Setra Systems, Inc. Dba Gems Sensors

2530-00-339-5130 INTERCHANGEABLE

Brake Lining Kit

5360-00-506-9509 INTERCHANGEABLE

Spring,helical,compression

5961-01-169-6504 INTERCHANGEABLE

Transistor

5305-01-356-720821812 INTERCHANGEABLE

Screw,cap,hexagon Head

Boart Canada Inc

6550-01-371-4633221812 INTERCHANGEABLE

Culture Medium,brain Heart Infus

Becton, Dickinson and Company Dba Becton Dickinson & Co

5990-01-423-818921812 INTERCHANGEABLE

Synchro,receiver

Elbitamerica, Inc.

6630-01-592-25906805344 INTERCHANGEABLE

Lamp,hematology Analyzer

Beckman Coulter Inc Div Us Customer Operations

1630-01-685-94282-1812 INTERCHANGEABLE

Brake,multiple Disk

Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)

Cross-Reference Index

Part Number	Manufacturer
PM21812	Amphenol Corp Div Amphenol Aerospace Operations (USA)
21812	Unison Industries Llc (USA)
PM21812	Unison Industries Llc (USA)
PM21812 PRIMARY	Mason Electric Co. Dba Mason Controls (USA)
21812	Amphenol Corp Div Amphenol Aerospace Operations (USA)
21812 PRIMARY	Mason Electric Co. Dba Mason Controls (USA)

Related Parts

5930-00-140-4186INTERCHANGEABLE

SWITCH,LIQUID LEVEL

21812

2530-00-339-5130INTERCHANGEABLE

BRAKE LINING KIT

5360-00-506-9509INTERCHANGEABLE

SPRING,HELICAL,COMPRESSION

5961-01-169-6504INTERCHANGEABLE

TRANSISTOR

5305-01-356-7208INTERCHANGEABLE

SCREW,CAP,HEXAGON HEAD

21812

6550-01-371-4633INTERCHANGEABLE

CULTURE MEDIUM,BRAIN HEART INFUS

221812

5990-01-423-8189INTERCHANGEABLE

SYNCHRO,RECEIVER

21812

6630-01-592-2590INTERCHANGEABLE

LAMP,HEMATOLOGY ANALYZER

6805344

1630-01-685-9428INTERCHANGEABLE

BRAKE,MULTIPLE DISK

2-1812

Frequently Asked Questions

What is NSN 5360-00-623-5421?

NSN 5360-00-623-5421 is a Spring, manufactured by Mason Electric Co. Dba Mason Controls, classified under FSC 5360 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5360-00-623-5421?

NSN 5360-00-623-5421 has 6 cross-referenced part numbers: PM21812 (Amphenol Corp Div Amphenol Aerospace Operations), 21812 (Unison Industries Llc), PM21812 (Unison Industries Llc), PM21812 (Mason Electric Co. Dba Mason Controls), 21812 (Amphenol Corp Div Amphenol Aerospace Operations) and 1 more.

What NSN replaces 5360-00-623-5421?

There are 9 known substitutes for 5360-00-623-5421: 5930-00-140-4186, 2530-00-339-5130, 5360-00-506-9509 and 6 more. Verify interchangeability with system specifications before substitution.

Is NSN 5360-00-623-5421 still in active supply?

NSN 5360-00-623-5421 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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