PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M-56NPlunger,quick Release

Hutchinson Aerospace & Industry, Inc. Dba Vlier Div Vlier · NSN 5340-01-019-2979 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-019-2979 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-019-2979. Primary manufacturer part number: M-56N.
Features
  • Plunger,quick Release — FSC 5340
  • Thread Quantity Per Inch: 18
  • End Pressure Rating: 15.500 POUNDS MAXIMUM LBS
  • Nominal Thread Size: 0.3125 INCHES IN
  • Thread Length: 0.562 INCHES NOMINAL IN
  • Shape: ROUND
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • 3 verified cross-references
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Plunger,quick Release, cataloged under National Stock Number 5340-01-019-2979, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hutchinson Aerospace & Industry, Inc. Dba Vlier Div Vlier. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-01-019-2979
Primary Part NumberM-56N
Item NamePlunger,quick Release
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerHutchinson Aerospace & Industry, Inc. Dba Vlier Div Vlier
StatusACTIVE
Thread Quantity Per Inch18
End Pressure Rating15.500 POUNDS MAXIMUM LBS
Nominal Thread Size0.3125 INCHES IN
Thread Length0.562 INCHES NOMINAL IN
ShapeROUND
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
Catch,clamping
3120-00-074-19115132504 INTERCHANGEABLE
Bearing,washer,thrust
Rolls-Royce Solutions America Inc
5935-00-296-8766 INTERCHANGEABLE
Plug,tip
2990-00-358-5293 INTERCHANGEABLE
Sleeve,thrust,governor
5999-00-502-7685 INTERCHANGEABLE
Retainer,electrical Shield
3455-00-738-8080 INTERCHANGEABLE
File,rotary
2940-01-006-576533112 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
1630-01-045-5422331-12-1 INTERCHANGEABLE
Brake Piston and Lining Assembly
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
5310-01-139-0871 INTERCHANGEABLE
Washer,flat
5340-01-302-180033112 INTERCHANGEABLE
Plunger,quick Release
Northwestern Tools, Inc.
Cross-Reference Index
Part NumberManufacturer
33112 Northwestern Tools, Inc. (USA)
M-56N PRIMARY Hutchinson Aerospace & Industry, Inc. Dba Vlier Div Vlier (USA)
946902-4 Raytheon Company Dba Raytheon (USA)
Related Parts
5340-01-160-7775SUCCESSOR
CATCH,CLAMPING
3120-00-074-1911INTERCHANGEABLE
BEARING,WASHER,THRUST
5132504
5935-00-296-8766INTERCHANGEABLE
PLUG,TIP
2990-00-358-5293INTERCHANGEABLE
SLEEVE,THRUST,GOVERNOR
5999-00-502-7685INTERCHANGEABLE
RETAINER,ELECTRICAL SHIELD
3455-00-738-8080INTERCHANGEABLE
FILE,ROTARY
2940-01-006-5765INTERCHANGEABLE
FILTER ELEMENT,FLUID
33112
1630-01-045-5422INTERCHANGEABLE
BRAKE PISTON AND LINING ASSEMBLY
331-12-1
5310-01-139-0871INTERCHANGEABLE
WASHER,FLAT
5340-01-302-1800INTERCHANGEABLE
PLUNGER,QUICK RELEASE
33112
6515-01-559-2494INTERCHANGEABLE
CONTINUOUS POSITIVE AIRWAY PRESS
33112
4030-01-671-8743INTERCHANGEABLE
SWIVEL,LINK AND JAW
33112

Frequently Asked Questions

What is NSN 5340-01-019-2979?

NSN 5340-01-019-2979 is a Plunger,quick Release, manufactured by Hutchinson Aerospace & Industry, Inc. Dba Vlier Div Vlier, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-019-2979?

NSN 5340-01-019-2979 has 3 cross-referenced part numbers: 33112 (Northwestern Tools, Inc.), M-56N (Hutchinson Aerospace & Industry, Inc. Dba Vlier Div Vlier), 946902-4 (Raytheon Company Dba Raytheon).

What NSN replaces 5340-01-019-2979?

There are 12 known substitutes for 5340-01-019-2979: 5340-01-160-7775, 3120-00-074-1911, 5935-00-296-8766 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M-56N?

Key specifications for M-56N: Thread Quantity Per Inch: 18; End Pressure Rating: 15.500 POUNDS MAXIMUM LBS; Nominal Thread Size: 0.3125 INCHES IN; Thread Length: 0.562 INCHES NOMINAL IN. 7 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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