PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1669Seat,valve

Lawler Manufacturing Company, Inc. · NSN 4820-00-824-0367 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-824-0367 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-824-0367. Primary manufacturer part number: 1669.
Features
  • Seat,valve — FSC 4820
  • Body Inside Diameter: 2.063 INCHES NOMINAL IN
  • Material: STEEL CORROSION RESISTING OVERALL
  • Seating Surface Shape: FLAT
  • Flange Seat to Disk End Height: 0.204 INCHES NOMINAL IN
  • Under Flange Height: 0.364 INCHES NOMINAL IN
  • Style Designator: THREADED FLANGED
  • Flange Diameter: 2.748 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-824-0367, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Lawler Manufacturing Company, Inc.. Government technical data includes 7 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-824-0367
Primary Part Number1669
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLawler Manufacturing Company, Inc.
StatusACTIVE
Body Inside Diameter2.063 INCHES NOMINAL IN
MaterialSTEEL CORROSION RESISTING OVERALL
Seating Surface ShapeFLAT
Flange Seat to Disk End Height0.204 INCHES NOMINAL IN
Under Flange Height0.364 INCHES NOMINAL IN
Style DesignatorTHREADED FLANGED
Flange Diameter2.748 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5905-00-106-7016C600012901 INTERCHANGEABLE
Resistor Set,matched
Kearfott Corporation Div Guidance and Navigation Division
4730-00-289-62308528575 INTERCHANGEABLE
Fitting,lubrication
Raytheon Company Dba Raytheon Co
5325-00-836-5982 INTERCHANGEABLE
Grommet,nonmetallic
5996-01-005-9522152109-01 INTERCHANGEABLE
Amplifier,audio-Radio Frequency
Ge Aviation Systems Llc
2940-01-197-7106016806T INTERCHANGEABLE
Filter Element,fluid
Kovatch Corp.
5330-01-368-7417D2491 PIECE F INTERCHANGEABLE
Gasket
Rix Industries
6545-01-514-75861669 INTERCHANGEABLE
Insert,medical Instrument and Su
Pelican Products, Inc. Dba Pelican Products Inc
5340-01-534-04551669 INTERCHANGEABLE
Cap,protective,dust and Moisture
Heyco Inc Dba Heyco Products
6550-01-555-15561669 INTERCHANGEABLE
Test Kit,digoxin Determination
Microgenics Corporation Dba Microgenics Corp Div Clinical Diagnostics Division
4810-01-561-96381669 INTERCHANGEABLE
Valve,gate
Hunt Valve Company, Inc.
Cross-Reference Index
Part NumberManufacturer
1669 PRIMARY Lawler Manufacturing Company, Inc. (USA)
1404PC21 Lawler Manufacturing Company, Inc. (USA)
Related Parts
5905-00-106-7016INTERCHANGEABLE
RESISTOR SET,MATCHED
C600012901
4730-00-289-6230INTERCHANGEABLE
FITTING,LUBRICATION
8528575
5325-00-836-5982INTERCHANGEABLE
GROMMET,NONMETALLIC
5996-01-005-9522INTERCHANGEABLE
AMPLIFIER,AUDIO-RADIO FREQUENCY
152109-01
2940-01-197-7106INTERCHANGEABLE
FILTER ELEMENT,FLUID
016806T
5330-01-368-7417INTERCHANGEABLE
GASKET
D2491 PIECE F
6545-01-514-7586INTERCHANGEABLE
INSERT,MEDICAL INSTRUMENT AND SU
1669
5340-01-534-0455INTERCHANGEABLE
CAP,PROTECTIVE,DUST AND MOISTURE
1669
6550-01-555-1556INTERCHANGEABLE
TEST KIT,DIGOXIN DETERMINATION
1669
4810-01-561-9638INTERCHANGEABLE
VALVE,GATE
1669
5865-01-594-8382INTERCHANGEABLE
RECEIVING SET,COUNTERMEASURES
1669

Frequently Asked Questions

What is NSN 4820-00-824-0367?

NSN 4820-00-824-0367 is a Seat,valve, manufactured by Lawler Manufacturing Company, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-824-0367?

NSN 4820-00-824-0367 has 2 cross-referenced part numbers: 1669 (Lawler Manufacturing Company, Inc.), 1404PC21 (Lawler Manufacturing Company, Inc.).

What NSN replaces 4820-00-824-0367?

There are 11 known substitutes for 4820-00-824-0367: 5905-00-106-7016, 4730-00-289-6230, 5325-00-836-5982 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1669?

Key specifications for 1669: Body Inside Diameter: 2.063 INCHES NOMINAL IN; Material: STEEL CORROSION RESISTING OVERALL; Seating Surface Shape: FLAT; Flange Seat to Disk End Height: 0.204 INCHES NOMINAL IN. 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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