PartsTable TECHNICAL DATA SHEET

JULY 2026Technical Data Sheet

20491Coupling

Name: 20491
SKU: 5342-01-115-1747

Thomas C. Wilson, Inc. Dba Thomas C Wilson · NSN 5342-01-115-1747 · FSC 5342 · Mount,resilient,weapon System

Verified by PartsTable

NSN 5342-01-115-1747 — this item is cataloged by the U.S. Government under National Stock Number 5342-01-115-1747. Primary manufacturer part number: 20491.

5342-01-115-1747 — Mount,resilient,weapon System illustration

Features

Coupling — FSC 5342
1 verified cross-reference
Primary manufacturer: Thomas C. Wilson, Inc. Dba Thomas C Wilson

Applications

General assembly and fastening
Structural repair and reinforcement
Facility maintenance hardware

General Description

The Coupling, cataloged under National Stock Number 5342-01-115-1747, is classified within Federal Supply Class 5342 (Mount,resilient,weapon System) of the Hardware and Abrasives group. The primary manufacturer of record is Thomas C. Wilson, Inc. Dba Thomas C Wilson. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts

Item Name	Coupling
FSC / FSG	5342 — Mount,resilient,weapon System (FSG 53)
Manufacturers	Thomas C. Wilson, Inc. Dba Thomas C Wilson (CAGE 66042)

Technical Specifications

Parameter	Value
NSN	5342-01-115-1747
Primary Part Number	20491
Item Name	Coupling
FSC / FSG	5342 / 53 — Mount,resilient,weapon System
Manufacturer	Thomas C. Wilson, Inc. Dba Thomas C Wilson
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
HAZMAT	No

⇄ Verified Substitutes 6

5935-00-221-9212 INTERCHANGEABLE

Connector,plug,electrical

3895-00-718-372358239 INTERCHANGEABLE

Sprinkler Mat Assembly

Dressta North America Ltd

5365-00-996-067920491 INTERCHANGEABLE

Spacer,ring

Northrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems

5950-01-416-57717137806-0001 INTERCHANGEABLE

Reactor

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp

5306-01-498-385891264A585 INTERCHANGEABLE

Bolt,internal Wrenching

Mcmaster-Carr Supply Co

1005-01-601-558620491 INTERCHANGEABLE

Guard,trigger

Charles Reed Knight Jr Dba Knight's Armament Company

Cross-Reference Index

Part Number	Manufacturer
20491	Thomas C. Wilson, Inc. Dba Thomas C Wilson (USA)

Related Parts

5935-00-221-9212INTERCHANGEABLE

CONNECTOR,PLUG,ELECTRICAL

3895-00-718-3723INTERCHANGEABLE

SPRINKLER MAT ASSEMBLY

58239

5365-00-996-0679INTERCHANGEABLE

SPACER,RING

20491

5950-01-416-5771INTERCHANGEABLE

REACTOR

7137806-0001

5306-01-498-3858INTERCHANGEABLE

BOLT,INTERNAL WRENCHING

91264A585

1005-01-601-5586INTERCHANGEABLE

GUARD,TRIGGER

20491

Frequently Asked Questions

What is NSN 5342-01-115-1747?

NSN 5342-01-115-1747 is a Coupling, manufactured by Thomas C. Wilson, Inc. Dba Thomas C Wilson, classified under FSC 5342 (Mount,resilient,weapon System). Status: active.

What are the part numbers for NSN 5342-01-115-1747?

NSN 5342-01-115-1747 has 1 cross-referenced part number: 20491 (Thomas C. Wilson, Inc. Dba Thomas C Wilson).

What NSN replaces 5342-01-115-1747?

There are 6 known substitutes for 5342-01-115-1747: 5935-00-221-9212, 3895-00-718-3723, 5365-00-996-0679 and 3 more. Verify interchangeability with system specifications before substitution.

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

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