PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28421Plug,vent

Tyco Fire Products Lp · NSN 5340-01-201-3186 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-201-3186 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-201-3186. Primary manufacturer part number: 28421.
Features
  • Plug,vent — FSC 5340
  • End Connection Type: THREADED
  • Vent Hole Diameter: 0.021 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN
  • Length: 0.630 INCHES NOMINAL IN
  • Vent Hole Shape: ROUND
  • Inside Diameter: 0.250 INCHES NOMINAL IN
  • Thread Length: 0.500 INCHES NOMINAL IN
  • Vent Hole Quantity: 1
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Plug,vent, cataloged under National Stock Number 5340-01-201-3186, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Tyco Fire Products Lp. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5340-01-201-3186
Primary Part Number28421
Item NamePlug,vent
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerTyco Fire Products Lp
StatusACTIVE
End Connection TypeTHREADED
Vent Hole Diameter0.021 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN
Length0.630 INCHES NOMINAL IN
Vent Hole ShapeROUND
Inside Diameter0.250 INCHES NOMINAL IN
Thread Length0.500 INCHES NOMINAL IN
Vent Hole Quantity1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5310-00-111-0368 INTERCHANGEABLE
Washer,flat
5360-00-310-066828421 INTERCHANGEABLE
Spring,helical,compression
Eaton Aerospace, Llc Dba Jackson South
4510-00-431-99762842-1 INTERCHANGEABLE
Filter Assembly
Mag Aerospace Industries, Llc Div Safran Cabins
5331-00-582-2133011-7377 INTERCHANGEABLE
O-Ring
Parker Hannifin Corporation Div O-Ring Division
5330-01-207-7603N2842194 INTERCHANGEABLE
Packing,preformed
Leslie Controls, Inc. Dba Leslie Controls Inc
5310-01-661-94718M0204648 INTERCHANGEABLE
Washer,flat
Brunswick Corp Dba Mercury Marine Div Mercury Marine
Cross-Reference Index
Part NumberManufacturer
28421 Richards Hose Ltd (fire Hoses & Associated Fire Fighting Equipment) (GBR)
28421 PRIMARY Tyco Fire Products Lp (USA)
Related Parts
5310-00-111-0368INTERCHANGEABLE
WASHER,FLAT
5360-00-310-0668INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
28421
4510-00-431-9976INTERCHANGEABLE
FILTER ASSEMBLY
2842-1
5331-00-582-2133INTERCHANGEABLE
O-RING
011-7377
5330-01-207-7603INTERCHANGEABLE
PACKING,PREFORMED
N2842194
5310-01-661-9471INTERCHANGEABLE
WASHER,FLAT
8M0204648

Frequently Asked Questions

What is NSN 5340-01-201-3186?

NSN 5340-01-201-3186 is a Plug,vent, manufactured by Tyco Fire Products Lp, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-201-3186?

NSN 5340-01-201-3186 has 2 cross-referenced part numbers: 28421 (Richards Hose Ltd (fire Hoses & Associated Fire Fighting Equipment)), 28421 (Tyco Fire Products Lp).

What NSN replaces 5340-01-201-3186?

There are 6 known substitutes for 5340-01-201-3186: 5310-00-111-0368, 5360-00-310-0668, 4510-00-431-9976 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 28421?

Key specifications for 28421: End Connection Type: THREADED; Vent Hole Diameter: 0.021 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN; Length: 0.630 INCHES NOMINAL IN; Vent Hole Shape: ROUND. 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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