PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

511-7Diaphragm,valve,flat

Tescom Corp Dba Tescom Div Tescom · NSN 4820-00-015-0526 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-015-0526 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-015-0526. Primary manufacturer part number: 511-7.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Bolt Hole Quantity: 4
  • Material: PLASTIC POLYAMIDE NYLON AND RUBBER CHLOROPRENE CLASS CR
  • Style Designator: FLAT
  • Hole Diameter: 0.285 INCHES NOMINAL IN
  • Material Thickness: 0.098 INCHES NOMINAL IN
  • Bolt Circle Diameter: 1.500 INCHES NOMINAL IN
  • Outside Diameter: 1.900 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Plastic Polyamide Nylon and Rubber Chloroprene Class Cr construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-015-0526, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Tescom Corp Dba Tescom Div Tescom. Government technical data includes 7 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
NSN4820-00-015-0526
Primary Part Number511-7
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTescom Corp Dba Tescom Div Tescom
StatusACTIVE
Bolt Hole Quantity4
MaterialPLASTIC POLYAMIDE NYLON AND RUBBER CHLOROPRENE CLASS CR
Style DesignatorFLAT
Hole Diameter0.285 INCHES NOMINAL IN
Material Thickness0.098 INCHES NOMINAL IN
Bolt Circle Diameter1.500 INCHES NOMINAL IN
Outside Diameter1.900 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
8345-00-130-28925-1-17 INTERCHANGEABLE
Flag,national
Army Institute of Heraldry This Is an Original Design Activity Not a Mfr
5330-00-187-36380184-17 INTERCHANGEABLE
Packing,preformed
Northrop Grumman Systems Corporation
4730-00-196-2074A733S-171CFB INTERCHANGEABLE
Nipple,pipe
American Society for Testing and Materials Dba Astm International
6680-00-223-0074 INTERCHANGEABLE
Diaphragm
8040-00-262-9060 INTERCHANGEABLE
Adhesive
4730-00-278-4293 INTERCHANGEABLE
Elbow,pipe
3825-00-374-69323705117 INTERCHANGEABLE
Cutting Edge,blower
Sicard a Division of Smi-Snowblast Inc Dba Sicard
1650-00-656-48549776495-10 INTERCHANGEABLE
Parts Kit,servo Valve
Hydro-Aire Aerospace Corp
5950-00-936-74032608345-1 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
2530-01-123-87904271395 INTERCHANGEABLE
Caliper,disc Brake
Chrysler Corp Service and Parts Opns
Cross-Reference Index
Part NumberManufacturer
511-7 PRIMARY Tescom Corp Dba Tescom Div Tescom (USA)
Related Parts
8345-00-130-2892INTERCHANGEABLE
FLAG,NATIONAL
5-1-17
5330-00-187-3638INTERCHANGEABLE
PACKING,PREFORMED
0184-17
4730-00-196-2074INTERCHANGEABLE
NIPPLE,PIPE
A733S-171CFB
6680-00-223-0074INTERCHANGEABLE
DIAPHRAGM
8040-00-262-9060INTERCHANGEABLE
ADHESIVE
4730-00-278-4293INTERCHANGEABLE
ELBOW,PIPE
3825-00-374-6932INTERCHANGEABLE
CUTTING EDGE,BLOWER
3705117
1650-00-656-4854INTERCHANGEABLE
PARTS KIT,SERVO VALVE
9776495-10
5950-00-936-7403INTERCHANGEABLE
TRANSFORMER,POWER
2608345-1
2530-01-123-8790INTERCHANGEABLE
CALIPER,DISC BRAKE
4271395
6220-01-141-6900INTERCHANGEABLE
PANEL,INDICATING,LIGHT TRANSMITT
2090-01-479-2218INTERCHANGEABLE
BLADE,WINDSHIELD WIPER

Frequently Asked Questions

What is NSN 4820-00-015-0526?

NSN 4820-00-015-0526 is a Diaphragm,valve,flat, manufactured by Tescom Corp Dba Tescom Div Tescom, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-015-0526?

NSN 4820-00-015-0526 has 1 cross-referenced part number: 511-7 (Tescom Corp Dba Tescom Div Tescom).

What NSN replaces 4820-00-015-0526?

There are 12 known substitutes for 4820-00-015-0526: 8345-00-130-2892, 5330-00-187-3638, 4730-00-196-2074 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 511-7?

Key specifications for 511-7: Bolt Hole Quantity: 4; Material: PLASTIC POLYAMIDE NYLON AND RUBBER CHLOROPRENE CLASS CR; Style Designator: FLAT; Hole Diameter: 0.285 INCHES NOMINAL IN. 7 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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