PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A14021Plug,fusible

Mueller Brass Co. · NSN 5340-00-905-4002 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-905-4002 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-905-4002. Primary manufacturer part number: A14021.
Features
  • Plug,fusible — FSC 5340
  • Usage Location: INSIDE
  • Material: BISMUTH OR TIN OR LEAD ALLOY CORE
  • Core Diameter: 0.398 INCHES NOMINAL IN
  • Features Provided: CORE
  • Core Fusing Temp Rating: 210.0 DEG FAHRENHEIT
  • Material: COPPER ALLOY CASING
  • Thread Size and Series/type Designator: 3/8-18 NPT
Applications
  • Applications requiring Bismuth or Tin or Lead Alloy Core construction
General Description

The Plug,fusible, cataloged under National Stock Number 5340-00-905-4002, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Mueller Brass Co.. Government technical data includes 7 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-905-4002
Primary Part NumberA14021
Item NamePlug,fusible
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerMueller Brass Co.
StatusACTIVE
Usage LocationINSIDE
MaterialBISMUTH OR TIN OR LEAD ALLOY CORE
Core Diameter0.398 INCHES NOMINAL IN
Features ProvidedCORE
Core Fusing Temp Rating210.0 DEG FAHRENHEIT
MaterialCOPPER ALLOY CASING
Thread Size and Series/type Designator3/8-18 NPT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 2
5935-00-234-2090223A5-32DIAH0LE INTERCHANGEABLE
Jack,telephone
Lucent Technologies Inc Corporate Headquarters
3010-01-500-3523A-1402-1 INTERCHANGEABLE
Actuator,hydraulic-Pneumatic,rot
Cmc America Corp
Cross-Reference Index
Part NumberManufacturer
A14021 PRIMARY Mueller Brass Co. (USA)
Related Parts
5935-00-234-2090INTERCHANGEABLE
JACK,TELEPHONE
223A5-32DIAH0LE
3010-01-500-3523INTERCHANGEABLE
ACTUATOR,HYDRAULIC-PNEUMATIC,ROT
A-1402-1

Frequently Asked Questions

What is NSN 5340-00-905-4002?

NSN 5340-00-905-4002 is a Plug,fusible, manufactured by Mueller Brass Co., classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-905-4002?

NSN 5340-00-905-4002 has 1 cross-referenced part number: A14021 (Mueller Brass Co.).

What NSN replaces 5340-00-905-4002?

There are 2 known substitutes for 5340-00-905-4002: 5935-00-234-2090, 3010-01-500-3523. Verify interchangeability with system specifications before substitution.

What are the specifications of A14021?

Key specifications for A14021: Usage Location: INSIDE; Material: BISMUTH OR TIN OR LEAD ALLOY CORE; Core Diameter: 0.398 INCHES NOMINAL IN; Features Provided: CORE. 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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