PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

45-02Diaphragm,valve,flat

Norgren C a Co · NSN 4820-00-784-2655 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-784-2655 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-784-2655. Primary manufacturer part number: 45-02.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Outside Diameter: 3.195 INCHES NOMINAL IN
  • Bolt Circle Diameter: 2.875 INCHES NOMINAL IN
  • Hole Diameter: 0.220 INCHES NOMINAL IN
  • Style Designator: FLAT
  • Material: RUBBER SYNTHETIC AND COTTON
  • Center Hole Diameter: 0.500 INCHES NOMINAL IN
  • Material Thickness: 0.045 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber Synthetic and Cotton construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-784-2655, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Norgren C a Co. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-784-2655
Primary Part Number45-02
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNorgren C a Co
StatusCANCELLED
Outside Diameter3.195 INCHES NOMINAL IN
Bolt Circle Diameter2.875 INCHES NOMINAL IN
Hole Diameter0.220 INCHES NOMINAL IN
Style DesignatorFLAT
MaterialRUBBER SYNTHETIC AND COTTON
Center Hole Diameter0.500 INCHES NOMINAL IN
Material Thickness0.045 INCHES NOMINAL IN
Bolt Hole Quantity6
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5999-00-019-9926 INTERCHANGEABLE
Delay Line
6240-00-196-4518 INTERCHANGEABLE
Lamp,incandescent
5120-00-293-2134 INTERCHANGEABLE
Wrench,open End
5305-00-301-5484 INTERCHANGEABLE
Screw,bearing
8930-00-957-956700-46-850 INTERCHANGEABLE
Jelly
Portion Pac Inc
4310-01-016-42124502 INTERCHANGEABLE
Cylinder,vacuum Pump
Rotary Vacuum Pumps Inc
5962-01-080-14367702001EB INTERCHANGEABLE
Microcircuit,digital
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
5940-01-231-73344502 INTERCHANGEABLE
Terminal,lug
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5325-01-260-3090 INTERCHANGEABLE
Fastener
4730-01-263-6395 INTERCHANGEABLE
Nut,tube Coupling,reducing
Cross-Reference Index
Part NumberManufacturer
2AX4-8F Norgren Martonair Ltd (GBR)
45-02 PRIMARY Norgren C a Co (USA)
2AX4-8F Norgren C a Co (USA)
Related Parts
5999-00-019-9926INTERCHANGEABLE
DELAY LINE
6240-00-196-4518INTERCHANGEABLE
LAMP,INCANDESCENT
5120-00-293-2134INTERCHANGEABLE
WRENCH,OPEN END
5305-00-301-5484INTERCHANGEABLE
SCREW,BEARING
8930-00-957-9567INTERCHANGEABLE
JELLY
00-46-850
4310-01-016-4212INTERCHANGEABLE
CYLINDER,VACUUM PUMP
4502
5962-01-080-1436INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
7702001EB
5940-01-231-7334INTERCHANGEABLE
TERMINAL,LUG
4502
5325-01-260-3090INTERCHANGEABLE
FASTENER
4730-01-263-6395INTERCHANGEABLE
NUT,TUBE COUPLING,REDUCING
5975-01-278-2829INTERCHANGEABLE
JUNCTION BOX
1650-01-433-6920INTERCHANGEABLE
CYLINDER,HYDRAULIC ACCUMULATOR
4502

Frequently Asked Questions

What is NSN 4820-00-784-2655?

NSN 4820-00-784-2655 is a Diaphragm,valve,flat, manufactured by Norgren C a Co, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-784-2655?

NSN 4820-00-784-2655 has 3 cross-referenced part numbers: 2AX4-8F (Norgren Martonair Ltd), 45-02 (Norgren C a Co), 2AX4-8F (Norgren C a Co).

What NSN replaces 4820-00-784-2655?

There are 12 known substitutes for 4820-00-784-2655: 5999-00-019-9926, 6240-00-196-4518, 5120-00-293-2134 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 45-02?

Key specifications for 45-02: Outside Diameter: 3.195 INCHES NOMINAL IN; Bolt Circle Diameter: 2.875 INCHES NOMINAL IN; Hole Diameter: 0.220 INCHES NOMINAL IN; Style Designator: FLAT. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-784-2655 still in active supply?

NSN 4820-00-784-2655 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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