PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2818Seat,valve

Lawler Manufacturing Company, Inc. · NSN 4820-00-075-0436 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-075-0436 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-075-0436. Primary manufacturer part number: 2818.
Features
  • Seat,valve — FSC 4820
  • Nominal Thread Size: 2.500 INCHES SINGLE THREADED PORTION IN
  • Material: NICKEL ALLOY OVERALL
  • Thread Series Designator: UNS SINGLE THREADED PORTION
  • Thread Class: 1A SINGLE THREADED PORTION A
  • Seat Angle in Deg: 45.000 NOMINAL
  • Seating Surface Shape: ANGULAR
  • Thread Quantity Per Inch: 14 SINGLE THREADED PORTION
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-075-0436, 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 4 commercial cross-references from 2 manufacturers, 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
NSN4820-00-075-0436
Primary Part Number2818
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLawler Manufacturing Company, Inc.
StatusACTIVE
Nominal Thread Size2.500 INCHES SINGLE THREADED PORTION IN
MaterialNICKEL ALLOY OVERALL
Thread Series DesignatorUNS SINGLE THREADED PORTION
Thread Class1A SINGLE THREADED PORTION A
Seat Angle in Deg45.000 NOMINAL
Seating Surface ShapeANGULAR
Thread Quantity Per Inch14 SINGLE THREADED PORTION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-105-4355 INTERCHANGEABLE
Body and Slide,directional Contr
4820-00-209-159731G42 INTERCHANGEABLE
Valve,flow Control
Astec Industries Inc Div Astec Ind.
6515-00-262-67752818 INTERCHANGEABLE
Catheter and Needle Unit,intrave
Becton Dickinson and Co Acutecare Div
5306-00-360-79991537405 INTERCHANGEABLE
Bolt,machine
General Motors Corp
2825-00-388-11792818 INTERCHANGEABLE
Ring,seal Oil Beari
Northrop Grumman Systems Corporation Div Marine Systems
2530-00-409-8821 INTERCHANGEABLE
Steering Wheel
5920-00-519-6932 INTERCHANGEABLE
Fuse Link,electrical
2940-00-529-2738122-0037 INTERCHANGEABLE
Filter Element,fluid
Cummins Power Generation Inc.
6920-00-671-6584 INTERCHANGEABLE
Fairing Assembly,ta
2520-00-692-57262818 INTERCHANGEABLE
Key,clutch,pressure
Sachs-Boge of America
Cross-Reference Index
Part NumberManufacturer
2818 PRIMARY Lawler Manufacturing Company, Inc. (USA)
864DPC38 Lawler Manufacturing Company, Inc. (USA)
311-00 PRIMARY Marco Company Dba American Chemical & Flux (USA)
863DPC38 Lawler Manufacturing Company, Inc. (USA)
Related Parts
4820-00-105-4355INTERCHANGEABLE
BODY AND SLIDE,DIRECTIONAL CONTR
4820-00-209-1597INTERCHANGEABLE
VALVE,FLOW CONTROL
31G42
6515-00-262-6775INTERCHANGEABLE
CATHETER AND NEEDLE UNIT,INTRAVE
2818
5306-00-360-7999INTERCHANGEABLE
BOLT,MACHINE
1537405
2825-00-388-1179INTERCHANGEABLE
RING,SEAL OIL BEARI
2818
2530-00-409-8821INTERCHANGEABLE
STEERING WHEEL
5920-00-519-6932INTERCHANGEABLE
FUSE LINK,ELECTRICAL
2940-00-529-2738INTERCHANGEABLE
FILTER ELEMENT,FLUID
122-0037
6920-00-671-6584INTERCHANGEABLE
FAIRING ASSEMBLY,TA
2520-00-692-5726INTERCHANGEABLE
KEY,CLUTCH,PRESSURE
2818
5950-00-790-0164INTERCHANGEABLE
TRANSFORMER,POWER
2818
5920-00-824-4130INTERCHANGEABLE
FUSEHOLDER,BLOCK
2818

Frequently Asked Questions

What is NSN 4820-00-075-0436?

NSN 4820-00-075-0436 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 4820-00-075-0436?

NSN 4820-00-075-0436 has 4 cross-referenced part numbers: 2818 (Lawler Manufacturing Company, Inc.), 864DPC38 (Lawler Manufacturing Company, Inc.), 311-00 (Marco Company Dba American Chemical & Flux), 863DPC38 (Lawler Manufacturing Company, Inc.).

What NSN replaces 4820-00-075-0436?

There are 12 known substitutes for 4820-00-075-0436: 4820-00-105-4355, 4820-00-209-1597, 6515-00-262-6775 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2818?

Key specifications for 2818: Nominal Thread Size: 2.500 INCHES SINGLE THREADED PORTION IN; Material: NICKEL ALLOY OVERALL; Thread Series Designator: UNS SINGLE THREADED PORTION; Thread Class: 1A SINGLE THREADED PORTION A. 8 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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