PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

311545-3Seat,valve

Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) · NSN 4820-01-176-6749 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-176-6749 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-176-6749. Primary manufacturer part number: 311545-3.
Features
  • Seat,valve — FSC 4820
  • 3 verified cross-references
  • Primary manufacturer: Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-176-6749, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeat,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersHoneywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (CAGE 59364); Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix (CAGE 99193)
Technical Specifications
ParameterValue
NSN4820-01-176-6749
Primary Part Number311545-3
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHoneywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6640-01-055-75106450/A3204QS INTERCHANGEABLE
Test Tube,blood Collecting
Becton, Dickinson and Co Dba Becton Dickinson & Co
Cross-Reference Index
Part NumberManufacturer
311545-3 PRIMARY Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA)
311545 Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix (USA)
311545-3 Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix (USA)
Related Parts
6640-01-055-7510INTERCHANGEABLE
TEST TUBE,BLOOD COLLECTING
6450/A3204QS

Frequently Asked Questions

What is NSN 4820-01-176-6749?

NSN 4820-01-176-6749 is a Seat,valve, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road), classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-176-6749?

NSN 4820-01-176-6749 has 3 cross-referenced part numbers: 311545-3 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)), 311545 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix), 311545-3 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix).

What NSN replaces 4820-01-176-6749?

There is 1 known substitute for 4820-01-176-6749: 6640-01-055-7510. Verify interchangeability with system specifications before substitution.

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