PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1828Diaphragm,valve,flat

Rockwell International Corp Flow Control Div · NSN 4820-00-956-1735 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-956-1735 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-956-1735. Primary manufacturer part number: 1828.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Style Designator: FLAT
  • Center Hole Diameter: 1.690 INCHES NOMINAL IN
  • Material Thickness: 0.008 INCHES NOMINAL IN
  • Material: STEEL CORROSION RESISTING
  • Outside Diameter: 3.340 INCHES NOMINAL IN
  • 2 verified cross-references
  • Primary manufacturer: Rockwell International Corp Flow Control Div
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-956-1735, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Rockwell International Corp Flow Control Div. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 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
NSN4820-00-956-1735
Primary Part Number1828
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerRockwell International Corp Flow Control Div
StatusACTIVE
Style DesignatorFLAT
Center Hole Diameter1.690 INCHES NOMINAL IN
Material Thickness0.008 INCHES NOMINAL IN
MaterialSTEEL CORROSION RESISTING
Outside Diameter3.340 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5950-00-066-0927 INTERCHANGEABLE
Transformer,radio Frequency
2940-00-075-016174995265 INTERCHANGEABLE
Filter Element,fluid
Kalmar AC Inc
6240-00-299-61261828 INTERCHANGEABLE
Lamp,incandescent
Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
4310-00-360-40761828 INTERCHANGEABLE
Intercooler,compressor
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5330-00-531-260921158-18 28 INTERCHANGEABLE
Seal,plain Encased
Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
5975-00-660-5809 INTERCHANGEABLE
Coupling,electrical Conduit
6530-00-689-36711828 INTERCHANGEABLE
Headrest,surgical,cerebellar
Steris Corporation Dba Steris Applied Sterilization Technololgies
5910-00-798-575418-28 INTERCHANGEABLE
Capacitor,fixed,electrolytic
Keysight Technologies Inc
4730-01-048-98971828 INTERCHANGEABLE
Locknut,pipe
R.w. Fernstrum & Company
5310-01-054-1659BACN10JD108 INTERCHANGEABLE
Nut,plain,slotted,hexagon
The Boeing Company Div Defense
Cross-Reference Index
Part NumberManufacturer
1828 Btr Valve Sealants Inc (USA)
1828 PRIMARY Rockwell International Corp Flow Control Div (USA)
Related Parts
5950-00-066-0927INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
2940-00-075-0161INTERCHANGEABLE
FILTER ELEMENT,FLUID
74995265
6240-00-299-6126INTERCHANGEABLE
LAMP,INCANDESCENT
1828
4310-00-360-4076INTERCHANGEABLE
INTERCOOLER,COMPRESSOR
1828
5330-00-531-2609INTERCHANGEABLE
SEAL,PLAIN ENCASED
21158-18 28
5975-00-660-5809INTERCHANGEABLE
COUPLING,ELECTRICAL CONDUIT
6530-00-689-3671INTERCHANGEABLE
HEADREST,SURGICAL,CEREBELLAR
1828
5910-00-798-5754INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
18-28
4730-01-048-9897INTERCHANGEABLE
LOCKNUT,PIPE
1828
5310-01-054-1659INTERCHANGEABLE
NUT,PLAIN,SLOTTED,HEXAGON
BACN10JD108
5360-01-054-2281INTERCHANGEABLE
SPRING
12356018
5305-01-078-7914INTERCHANGEABLE
SCREW,LOCK
1828

Frequently Asked Questions

What is NSN 4820-00-956-1735?

NSN 4820-00-956-1735 is a Diaphragm,valve,flat, manufactured by Rockwell International Corp Flow Control Div, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-956-1735?

NSN 4820-00-956-1735 has 2 cross-referenced part numbers: 1828 (Btr Valve Sealants Inc), 1828 (Rockwell International Corp Flow Control Div).

What NSN replaces 4820-00-956-1735?

There are 12 known substitutes for 4820-00-956-1735: 5950-00-066-0927, 2940-00-075-0161, 6240-00-299-6126 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1828?

Key specifications for 1828: Style Designator: FLAT; Center Hole Diameter: 1.690 INCHES NOMINAL IN; Material Thickness: 0.008 INCHES NOMINAL IN; Material: STEEL CORROSION RESISTING. 5 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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