PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21071Diaphragm,valve,flat

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-01-273-7705 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-273-7705 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-273-7705. Primary manufacturer part number: 21071.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Material: RUBBER
  • 1 verified cross-reference
  • Primary manufacturer: Leslie Controls, Inc. Dba Leslie Controls Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-273-7705, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 1 verified specification, 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-273-7705
Primary Part Number21071
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
MaterialRUBBER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3110-00-100-3586 INTERCHANGEABLE
Cone and Rollers,tapered Roller
4820-00-287-4183 INTERCHANGEABLE
Valve,gate
1660-00-540-525121071 INTERCHANGEABLE
Converter,liquid Oxygen
Mission Systems Orchard Park Inc
5962-01-096-4121MP270, MOD 7 INTERCHANGEABLE
Microcircuit,linear
Analogic Corp Data Conversion Products Div
5935-01-107-8816 INTERCHANGEABLE
Adapter,connector
4320-01-290-359721071 INTERCHANGEABLE
Adapter,shaft Subas
Parker Hannifin Corporation Div Hydraulic Systems Division
3120-01-322-2897 INTERCHANGEABLE
Bearing Set,sleeve
6150-01-582-4410 INTERCHANGEABLE
Bus,conductor
8305-01-621-8415WR24/3010/38 INTERCHANGEABLE
Cloth,woven Roving
Owens Corning
Cross-Reference Index
Part NumberManufacturer
21071 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
3110-00-100-3586INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
4820-00-287-4183INTERCHANGEABLE
VALVE,GATE
1660-00-540-5251INTERCHANGEABLE
CONVERTER,LIQUID OXYGEN
21071
5962-01-096-4121INTERCHANGEABLE
MICROCIRCUIT,LINEAR
MP270, MOD 7
5935-01-107-8816INTERCHANGEABLE
ADAPTER,CONNECTOR
4320-01-290-3597INTERCHANGEABLE
ADAPTER,SHAFT SUBAS
21071
3120-01-322-2897INTERCHANGEABLE
BEARING SET,SLEEVE
6150-01-582-4410INTERCHANGEABLE
BUS,CONDUCTOR
8305-01-621-8415INTERCHANGEABLE
CLOTH,WOVEN ROVING
WR24/3010/38

Frequently Asked Questions

What is NSN 4820-01-273-7705?

NSN 4820-01-273-7705 is a Diaphragm,valve,flat, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-273-7705?

NSN 4820-01-273-7705 has 1 cross-referenced part number: 21071 (Leslie Controls, Inc. Dba Leslie Controls Inc).

What NSN replaces 4820-01-273-7705?

There are 9 known substitutes for 4820-01-273-7705: 3110-00-100-3586, 4820-00-287-4183, 1660-00-540-5251 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21071?

Key specifications for 21071: Material: RUBBER. 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