PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5-43Diaphragm,valve,flat

Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div · NSN 4820-00-036-2104 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-036-2104 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-036-2104. Primary manufacturer part number: 5-43.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Center Hole Diameter: 0.375 INCHES NOMINAL IN
  • Bolt Circle Diameter: 4.500 INCHES NOMINAL IN
  • Material Thickness: 0.112 INCHES NOMINAL IN
  • Style Designator: FLAT
  • Outside Diameter: 5.000 INCHES NOMINAL IN
  • Hole Diameter: 0.335 INCHES NOMINAL IN
  • Material: RUBBER SYNTHETIC
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber Synthetic construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-036-2104, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div. Government technical data includes 8 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
NSN4820-00-036-2104
Primary Part Number5-43
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerDresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div
StatusACTIVE
Center Hole Diameter0.375 INCHES NOMINAL IN
Bolt Circle Diameter4.500 INCHES NOMINAL IN
Material Thickness0.112 INCHES NOMINAL IN
Style DesignatorFLAT
Outside Diameter5.000 INCHES NOMINAL IN
Hole Diameter0.335 INCHES NOMINAL IN
MaterialRUBBER SYNTHETIC
Bolt Hole Quantity8
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5130-00-004-6773543 INTERCHANGEABLE
Installation Tool,fastener,hydra
Huck International, Inc. Div Kingston Operations
5315-00-198-5978103604 INTERCHANGEABLE
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Chrysler Realty Company Llc Dba Daimler Chrysler
5220-00-215-1885543 INTERCHANGEABLE
Gage,comparator,electronic
Warner and Swasey Co Sheffield Measurement Div Sub of Cross and Trecker Corp
5930-00-249-1445118597H1 INTERCHANGEABLE
Switch,rotary
Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch
5940-00-282-9563543 INTERCHANGEABLE
Terminal,lug
Zierick Mfg Corp
6730-00-432-5659 INTERCHANGEABLE
Projector,still Picture
2920-00-433-0813105-151 INTERCHANGEABLE
Regulator,engine Generator
Prestolite Electric Inc
2520-00-532-5096543 INTERCHANGEABLE
Lever Asy
Atwood Industries Inc Automotive Div
6250-00-965-5376543 INTERCHANGEABLE
Lampholder
Light Sources, Inc Dba Lsi
3950-01-011-6359543 INTERCHANGEABLE
Crane,floor,portable
Thern Inc
Cross-Reference Index
Part NumberManufacturer
5-43 Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div (USA)
Related Parts
5130-00-004-6773INTERCHANGEABLE
INSTALLATION TOOL,FASTENER,HYDRA
543
5315-00-198-5978INTERCHANGEABLE
PIN,TAPERED,PLAIN
103604
5220-00-215-1885INTERCHANGEABLE
GAGE,COMPARATOR,ELECTRONIC
543
5930-00-249-1445INTERCHANGEABLE
SWITCH,ROTARY
118597H1
5940-00-282-9563INTERCHANGEABLE
TERMINAL,LUG
543
6730-00-432-5659INTERCHANGEABLE
PROJECTOR,STILL PICTURE
2920-00-433-0813INTERCHANGEABLE
REGULATOR,ENGINE GENERATOR
105-151
2520-00-532-5096INTERCHANGEABLE
LEVER ASY
543
6250-00-965-5376INTERCHANGEABLE
LAMPHOLDER
543
3950-01-011-6359INTERCHANGEABLE
CRANE,FLOOR,PORTABLE
543
6675-01-052-1420INTERCHANGEABLE
TEMPLATE,DRAFTING
1217I
6520-01-067-1229INTERCHANGEABLE
FILE,PULP CANAL,DENTAL
270543NC

Frequently Asked Questions

What is NSN 4820-00-036-2104?

NSN 4820-00-036-2104 is a Diaphragm,valve,flat, manufactured by Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-036-2104?

NSN 4820-00-036-2104 has 1 cross-referenced part number: 5-43 (Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div).

What NSN replaces 4820-00-036-2104?

There are 12 known substitutes for 4820-00-036-2104: 5130-00-004-6773, 5315-00-198-5978, 5220-00-215-1885 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5-43?

Key specifications for 5-43: Center Hole Diameter: 0.375 INCHES NOMINAL IN; Bolt Circle Diameter: 4.500 INCHES NOMINAL IN; Material Thickness: 0.112 INCHES NOMINAL IN; Style Designator: FLAT. 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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