PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

867Seat,valve

Lawler Manufacturing Company, Inc. · NSN 4820-00-399-2763 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-399-2763 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-399-2763. Primary manufacturer part number: 867.
Features
  • Seat,valve — FSC 4820
  • Style Designator: THREADED FLANGED
  • Thread Series Designator: UNEF SINGLE THREADED PORTION
  • Material: STEEL COMP 303 OVERALL
  • Body Inside Diameter: 1.156 INCHES NOMINAL IN
  • Thread Class: 2A SINGLE THREADED PORTION A
  • Nominal Thread Size: 1.250 INCHES SINGLE THREADED PORTION IN
  • Seating Surface Shape: ANGULAR
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-399-2763, 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 12 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-399-2763
Primary Part Number867
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLawler Manufacturing Company, Inc.
StatusACTIVE
Style DesignatorTHREADED FLANGED
Thread Series DesignatorUNEF SINGLE THREADED PORTION
MaterialSTEEL COMP 303 OVERALL
Body Inside Diameter1.156 INCHES NOMINAL IN
Thread Class2A SINGLE THREADED PORTION A
Nominal Thread Size1.250 INCHES SINGLE THREADED PORTION IN
Seating Surface ShapeANGULAR
Under Flange Height0.375 INCHES NOMINAL IN
Flange Seat to Disk End Height0.375 INCHES NOMINAL IN
Flange Diameter1.490 INCHES NOMINAL IN
Thread Length0.375 INCHES NOMINAL SINGLE THREADED PORTION IN
Seat Angle in Deg32.000 NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6625-00-120-1063 INTERCHANGEABLE
Test Set,telegraph
5120-00-133-1785 INTERCHANGEABLE
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5975-00-141-0541867 INTERCHANGEABLE
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Raco, a Division of Hubbell Incorporated(delaware)
2805-00-524-9321S-960 INTERCHANGEABLE
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Eaton Corp Dba Eaton Aerospace Jackson
5940-00-688-73141384 INTERCHANGEABLE
Terminal Board
Birnbach Co Inc
7490-00-905-6605 INTERCHANGEABLE
Address Plate Machine
3110-00-936-60977537 INTERCHANGEABLE
Retainer and Rollers,bearing
Eaton Corporation Div Eaton Fluid Power
5935-01-005-3579 INTERCHANGEABLE
Connector,plug,electrical
5342-01-018-1581XH7208 INTERCHANGEABLE
Boot,rubber,spark P
Heale Manufacturing Co Llc
5342-01-239-7552867 INTERCHANGEABLE
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Globe Food Equipment Company
Cross-Reference Index
Part NumberManufacturer
867 PRIMARY Lawler Manufacturing Company, Inc. (USA)
Related Parts
6625-00-120-1063INTERCHANGEABLE
TEST SET,TELEGRAPH
5120-00-133-1785INTERCHANGEABLE
CONTACT POSITIONER,TERMINAL CRIM
5975-00-141-0541INTERCHANGEABLE
COVER,JUNCTION BOX
867
2805-00-524-9321INTERCHANGEABLE
VALVE,POPPET,ENGINE
S-960
5940-00-688-7314INTERCHANGEABLE
TERMINAL BOARD
1384
7490-00-905-6605INTERCHANGEABLE
ADDRESS PLATE MACHINE
3110-00-936-6097INTERCHANGEABLE
RETAINER AND ROLLERS,BEARING
7537
5935-01-005-3579INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5342-01-018-1581INTERCHANGEABLE
BOOT,RUBBER,SPARK P
XH7208
5342-01-239-7552INTERCHANGEABLE
BRACKET,COVER,TABLE MECHANISM
867
6910-01-301-9275INTERCHANGEABLE
LINER,MAKE-UP,CASUALTY SIMULATIO
867
5120-01-335-8603INTERCHANGEABLE
CONTACT POSITIONER,TERMINAL CRIM
86-7

Frequently Asked Questions

What is NSN 4820-00-399-2763?

NSN 4820-00-399-2763 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 4820-00-399-2763?

NSN 4820-00-399-2763 has 1 cross-referenced part number: 867 (Lawler Manufacturing Company, Inc.).

What NSN replaces 4820-00-399-2763?

There are 12 known substitutes for 4820-00-399-2763: 6625-00-120-1063, 5120-00-133-1785, 5975-00-141-0541 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 867?

Key specifications for 867: Style Designator: THREADED FLANGED; Thread Series Designator: UNEF SINGLE THREADED PORTION; Material: STEEL COMP 303 OVERALL; Body Inside Diameter: 1.156 INCHES NOMINAL IN. 12 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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