PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56300Nut,coupling,flexible Casing

Avox Systems Inc Dba Avox Systems Inc · NSN 3040-00-453-9990 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-00-453-9990 — this item is cataloged by the U.S. Government under National Stock Number 3040-00-453-9990. Primary manufacturer part number: 56300.
Features
  • Nut,coupling,flexible Casing — FSC 3040
  • Thread Length: 0.190 INCHES NOMINAL IN
  • Thread Size: 3/8 IN.-24 IN
  • Thread Direction: RIGHT-HAND
  • Screw Thread Series Designator: UNF
  • Seat End Inside Diameter: 0.242 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Avox Systems Inc Dba Avox Systems Inc
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Nut,coupling,flexible Casing, cataloged under National Stock Number 3040-00-453-9990, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Avox Systems Inc Dba Avox Systems Inc. Government technical data includes 5 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-00-453-9990
Primary Part Number56300
Item NameNut,coupling,flexible Casing
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerAvox Systems Inc Dba Avox Systems Inc
StatusACTIVE
Thread Length0.190 INCHES NOMINAL IN
Thread Size3/8 IN.-24 IN
Thread DirectionRIGHT-HAND
Screw Thread Series DesignatorUNF
Seat End Inside Diameter0.242 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5340-00-150-087356-300 INTERCHANGEABLE
Clamp,loop
Crane Carrier Company, Llc
3455-00-194-051810170 INTERCHANGEABLE
Cutter,milling,plain
Niagara Cutter Inc
5360-00-366-655161-84 INTERCHANGEABLE
Spring,helical,compression
Chrysler Realty Company Llc Dba Daimler Chrysler
5120-00-449-7278 INTERCHANGEABLE
Pedestral Jack
1630-00-795-7125E10-09023-1 INTERCHANGEABLE
Retainer,bearing Wheel
Fleet Readiness Center Southeast Div Navy
1005-01-616-370056300 INTERCHANGEABLE
Chute,ammunition
Nobles Worldwide, Inc.
6640-01-727-175156300 INTERCHANGEABLE
Stand,laboratory Apparatus Suppo
Hach Company Dba Hach Co
Cross-Reference Index
Part NumberManufacturer
56300 PRIMARY Avox Systems Inc Dba Avox Systems Inc (USA)
Related Parts
5340-00-150-0873INTERCHANGEABLE
CLAMP,LOOP
56-300
3455-00-194-0518INTERCHANGEABLE
CUTTER,MILLING,PLAIN
10170
5360-00-366-6551INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
61-84
5120-00-449-7278INTERCHANGEABLE
PEDESTRAL JACK
1630-00-795-7125INTERCHANGEABLE
RETAINER,BEARING WHEEL
E10-09023-1
1005-01-616-3700INTERCHANGEABLE
CHUTE,AMMUNITION
56300
6640-01-727-1751INTERCHANGEABLE
STAND,LABORATORY APPARATUS SUPPO
56300

Frequently Asked Questions

What is NSN 3040-00-453-9990?

NSN 3040-00-453-9990 is a Nut,coupling,flexible Casing, manufactured by Avox Systems Inc Dba Avox Systems Inc, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-00-453-9990?

NSN 3040-00-453-9990 has 1 cross-referenced part number: 56300 (Avox Systems Inc Dba Avox Systems Inc).

What NSN replaces 3040-00-453-9990?

There are 7 known substitutes for 3040-00-453-9990: 5340-00-150-0873, 3455-00-194-0518, 5360-00-366-6551 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 56300?

Key specifications for 56300: Thread Length: 0.190 INCHES NOMINAL IN; Thread Size: 3/8 IN.-24 IN; Thread Direction: RIGHT-HAND; Overall Length: 0.312 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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