PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1643Plunger,valve

Lawler Manufacturing Company, Inc. · NSN 4820-00-756-7550 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-756-7550 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-756-7550. Primary manufacturer part number: 1643.
Features
  • Plunger,valve — FSC 4820
  • Material: STEEL
  • 2 verified cross-references
  • Primary manufacturer: Lawler Manufacturing Company, Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel construction
General Description

The Plunger,valve, cataloged under National Stock Number 4820-00-756-7550, 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 1 verified specification, 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-756-7550
Primary Part Number1643
Item NamePlunger,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLawler Manufacturing Company, Inc.
StatusACTIVE
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2530-00-113-55472830269 INTERCHANGEABLE
Cylinder,hydraulic Brake,master
Chrysler Realty Company Llc Dba Daimler Chrysler
2920-00-242-466416-43 INTERCHANGEABLE
Armature,motor
Prestolite Electric Inc
5962-00-252-7696360085-1 INTERCHANGEABLE
Microcircuit,linear
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
4730-00-278-4357SAE J512 4-2 060102BA INTERCHANGEABLE
Adapter,straight,pipe to Tube
Sae International Dba Sae International
5915-00-303-36971643 INTERCHANGEABLE
Filter,direct Current Power
Chicago Condenser Corp., Inc.
6250-00-703-54011643 INTERCHANGEABLE
Lampholder
Aerospace Lighting Corporation
4933-00-723-11617231161 INTERCHANGEABLE
Wrench,fuze-Setter,combination,m
Army, United States Department of the Dba Watervliet Arsenal Div Business Development
3040-00-797-39991643 INTERCHANGEABLE
Cam,control
Eaton Aerospace, Llc Dba Jackson South
5950-00-869-1075D0T43 INTERCHANGEABLE
Transformer,audio Frequency
Magnetika Inc
5935-00-993-2752 INTERCHANGEABLE
Connector,receptacle,electrical
Cross-Reference Index
Part NumberManufacturer
1643 PRIMARY Lawler Manufacturing Company, Inc. (USA)
3317506 PC 24 Lawler Manufacturing Company, Inc. (USA)
Related Parts
2530-00-113-5547INTERCHANGEABLE
CYLINDER,HYDRAULIC BRAKE,MASTER
2830269
2920-00-242-4664INTERCHANGEABLE
ARMATURE,MOTOR
16-43
5962-00-252-7696INTERCHANGEABLE
MICROCIRCUIT,LINEAR
360085-1
4730-00-278-4357INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
SAE J512 4-2 060102BA
5915-00-303-3697INTERCHANGEABLE
FILTER,DIRECT CURRENT POWER
1643
6250-00-703-5401INTERCHANGEABLE
LAMPHOLDER
1643
4933-00-723-1161INTERCHANGEABLE
WRENCH,FUZE-SETTER,COMBINATION,M
7231161
3040-00-797-3999INTERCHANGEABLE
CAM,CONTROL
1643
5950-00-869-1075INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
D0T43
5935-00-993-2752INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5340-01-073-1578INTERCHANGEABLE
HINGE,BUTT
1643-02
5340-01-110-2021INTERCHANGEABLE
HINGE,BUTT

Frequently Asked Questions

What is NSN 4820-00-756-7550?

NSN 4820-00-756-7550 is a Plunger,valve, manufactured by Lawler Manufacturing Company, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-756-7550?

NSN 4820-00-756-7550 has 2 cross-referenced part numbers: 1643 (Lawler Manufacturing Company, Inc.), 3317506 PC 24 (Lawler Manufacturing Company, Inc.).

What NSN replaces 4820-00-756-7550?

There are 12 known substitutes for 4820-00-756-7550: 2530-00-113-5547, 2920-00-242-4664, 5962-00-252-7696 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1643?

Key specifications for 1643: Material: STEEL. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com