PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

34677Seat,valve

Circor Aerospace, Inc. Dba Circor Aerospace Inc · NSN 4820-01-400-3116 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-400-3116 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-400-3116. Primary manufacturer part number: 34677.
Features
  • Seat,valve — FSC 4820
  • Material: ALUMINUM ALLOY 2011 SEAT
  • Surface Treatment: PASSIVATE SEAT
  • Body Inside Diameter: 0.156 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
  • Body Outside Diameter: 1.555 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN
  • 2 verified cross-references
  • Primary manufacturer: Circor Aerospace, Inc. Dba Circor Aerospace Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Aluminum Alloy 2011 Seat construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-400-3116, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Circor Aerospace, Inc. Dba Circor Aerospace Inc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references 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: Cancelled.

Technical Specifications
ParameterValue
NSN4820-01-400-3116
Primary Part Number34677
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCircor Aerospace, Inc. Dba Circor Aerospace Inc
StatusCANCELLED
MaterialALUMINUM ALLOY 2011 SEAT
Surface TreatmentPASSIVATE SEAT
Body Inside Diameter0.156 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
Body Outside Diameter1.555 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5133-00-241-594434677 INTERCHANGEABLE
Drill,twist
Viking Drill and Tool Inc
5306-01-706-133034-677 INTERCHANGEABLE
Bolt,machine
Rix Industries
Cross-Reference Index
Part NumberManufacturer
34677 PRIMARY Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
E34677 PRIMARY Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
Related Parts
5133-00-241-5944INTERCHANGEABLE
DRILL,TWIST
34677
5306-01-706-1330INTERCHANGEABLE
BOLT,MACHINE
34-677

Frequently Asked Questions

What is NSN 4820-01-400-3116?

NSN 4820-01-400-3116 is a Seat,valve, manufactured by Circor Aerospace, Inc. Dba Circor Aerospace Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-400-3116?

NSN 4820-01-400-3116 has 2 cross-referenced part numbers: 34677 (Circor Aerospace, Inc. Dba Circor Aerospace Inc), E34677 (Circor Aerospace, Inc. Dba Circor Aerospace Inc).

What NSN replaces 4820-01-400-3116?

There are 2 known substitutes for 4820-01-400-3116: 5133-00-241-5944, 5306-01-706-1330. Verify interchangeability with system specifications before substitution.

What are the specifications of 34677?

Key specifications for 34677: Special Features: HEAT TREAT PER MIL-H-6875 TO R/C 56/58; Material: ALUMINUM ALLOY 2011 SEAT; Surface Treatment: PASSIVATE SEAT; Body Inside Diameter: 0.156 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-400-3116 still in active supply?

NSN 4820-01-400-3116 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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