PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J202Diaphragm,valve,flat

Hammel Dahl Inc · NSN 4820-00-623-8692 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-623-8692 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-623-8692. Primary manufacturer part number: J202.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Style Designator: FLAT
  • Media for Which Designed: AIR
  • Material Thickness: 0.014 INCHES NOMINAL IN
  • Outside Diameter: 1.750 INCHES NOMINAL IN
  • Material: RUBBER SYNTHETIC
  • Bolt Hole Quantity: 4
  • Hole Diameter: 0.188 INCHES NOMINAL IN
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 4820-00-623-8692, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hammel Dahl Inc. Government technical data includes 8 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-623-8692
Primary Part NumberJ202
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHammel Dahl Inc
StatusACTIVE
Style DesignatorFLAT
Media for Which DesignedAIR
Material Thickness0.014 INCHES NOMINAL IN
Outside Diameter1.750 INCHES NOMINAL IN
MaterialRUBBER SYNTHETIC
Bolt Hole Quantity4
Hole Diameter0.188 INCHES NOMINAL IN
Bolt Circle Diameter1.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5365-00-168-12073376299 INTERCHANGEABLE
Bushing,machine Thread
General Motors Llc Dba General Motors Llc
2920-00-288-3361J202 INTERCHANGEABLE
Adapter,spark Plug
Champion Aerospace Llc
5805-00-498-8099J202 INTERCHANGEABLE
Chamber,cable Terminal
Lucent Technologies Inc Corporate Headquarters
4720-00-844-3657SAE-20/2ECLT-A-457X57 INTERCHANGEABLE
Hose,nonmetallic
Sae International Dba Sae International
4730-00-883-7604J202 INTERCHANGEABLE
Clamp,hose
Band-It-Idex Inc Unit of Idex Corp
4720-00-908-7134SAE-20/2ECLT-A-356X38 INTERCHANGEABLE
Hose,nonmetallic
Sae International Dba Sae International
3040-01-211-0918J202 INTERCHANGEABLE
Shaft,shouldered
Circor Naval Solutions Llc Dba Warren Pumps
5961-01-296-9315J202 INTERCHANGEABLE
Transistor
Siliconix Incorporated Div Siliconix
5961-01-451-0806 INTERCHANGEABLE
Transistor
Cross-Reference Index
Part NumberManufacturer
J202 Hammel Dahl Inc (USA)
J21PC15E Hammel Dahl Inc (USA)
Related Parts
5365-00-168-1207INTERCHANGEABLE
BUSHING,MACHINE THREAD
3376299
2920-00-288-3361INTERCHANGEABLE
ADAPTER,SPARK PLUG
J202
5805-00-498-8099INTERCHANGEABLE
CHAMBER,CABLE TERMINAL
J202
4720-00-844-3657INTERCHANGEABLE
HOSE,NONMETALLIC
SAE-20/2ECLT-A-457X57
4730-00-883-7604INTERCHANGEABLE
CLAMP,HOSE
J202
4720-00-908-7134INTERCHANGEABLE
HOSE,NONMETALLIC
SAE-20/2ECLT-A-356X38
3040-01-211-0918INTERCHANGEABLE
SHAFT,SHOULDERED
J202
5961-01-296-9315INTERCHANGEABLE
TRANSISTOR
J202
5961-01-451-0806INTERCHANGEABLE
TRANSISTOR

Frequently Asked Questions

What is NSN 4820-00-623-8692?

NSN 4820-00-623-8692 is a Diaphragm,valve,flat, manufactured by Hammel Dahl Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-623-8692?

NSN 4820-00-623-8692 has 2 cross-referenced part numbers: J202 (Hammel Dahl Inc), J21PC15E (Hammel Dahl Inc).

What NSN replaces 4820-00-623-8692?

There are 9 known substitutes for 4820-00-623-8692: 5365-00-168-1207, 2920-00-288-3361, 5805-00-498-8099 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J202?

Key specifications for J202: Style Designator: FLAT; Media for Which Designed: AIR; Material Thickness: 0.014 INCHES NOMINAL IN; Outside Diameter: 1.750 INCHES NOMINAL IN. 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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