PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

05-0775Seat,valve

Speakman Company Dba Speakman Div Plumbing, Safety, and Shower Products · NSN 4820-00-311-5270 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-311-5270 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-311-5270. Primary manufacturer part number: 05-0775.
Features
  • Seat,valve — FSC 4820
  • Thread Quantity Per Inch: 27 SINGLE THREADED PORTION
  • Flange Seat to Disk End Height: 0.078 INCHES NOMINAL IN
  • Thread Class: 2A SINGLE THREADED PORTION A
  • Material: COPPER ALLOY OVERALL
  • Thread Series Designator: UNS SINGLE THREADED PORTION
  • Flange Diameter: 0.500 INCHES NOMINAL IN
  • Style Designator: THREADED FLANGED
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-311-5270, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Speakman Company Dba Speakman Div Plumbing, Safety, and Shower Products. Government technical data includes 12 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-311-5270
Primary Part Number05-0775
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSpeakman Company Dba Speakman Div Plumbing, Safety, and Shower Products
StatusACTIVE
Thread Quantity Per Inch27 SINGLE THREADED PORTION
Flange Seat to Disk End Height0.078 INCHES NOMINAL IN
Thread Class2A SINGLE THREADED PORTION A
MaterialCOPPER ALLOY OVERALL
Thread Series DesignatorUNS SINGLE THREADED PORTION
Flange Diameter0.500 INCHES NOMINAL IN
Style DesignatorTHREADED FLANGED
Under Flange Height0.188 INCHES NOMINAL IN
Nominal Thread Size0.438 INCHES SINGLE THREADED PORTION IN
Seating Surface ShapeFLAT
Thread Length0.188 INCHES NOMINAL SINGLE THREADED PORTION IN
Body Inside Diameter0.406 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2995-00-136-24205775 INTERCHANGEABLE
Housing Assy,hydrau
Eaton Aerospace, Llc Dba Jackson South
4730-00-188-63141831 INTERCHANGEABLE
Fitting,lubrication
Stewart-Warner Corporation
3120-00-338-48455775 INTERCHANGEABLE
Bearing
Harbormaster Marine, Inc
4940-00-391-4606 INTERCHANGEABLE
Countershaft
5950-00-510-52625775 INTERCHANGEABLE
Transformer,power
Cae Usa Inc.
2805-00-532-00615775 INTERCHANGEABLE
Flywheel,engine
R.h. Industries, Inc.
5950-00-538-5665 INTERCHANGEABLE
Transformer,audio Frequency
3020-00-694-0420 INTERCHANGEABLE
Gear,helical
5306-00-695-70695775 INTERCHANGEABLE
Bolt,spring
Fwd Seagrave Holdings Lp
5950-00-732-844734008 INTERCHANGEABLE
Transformer,audio Frequency
Freed Transformer Co
Cross-Reference Index
Part NumberManufacturer
5775 Speakman Company Dba Speakman Div Plumbing, Safety, and Shower Products (USA)
05-0775 PRIMARY Speakman Company Dba Speakman Div Plumbing, Safety, and Shower Products (USA)
Related Parts
2995-00-136-2420INTERCHANGEABLE
HOUSING ASSY,HYDRAU
5775
4730-00-188-6314INTERCHANGEABLE
FITTING,LUBRICATION
1831
3120-00-338-4845INTERCHANGEABLE
BEARING
5775
4940-00-391-4606INTERCHANGEABLE
COUNTERSHAFT
5950-00-510-5262INTERCHANGEABLE
TRANSFORMER,POWER
5775
2805-00-532-0061INTERCHANGEABLE
FLYWHEEL,ENGINE
5775
5950-00-538-5665INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
3020-00-694-0420INTERCHANGEABLE
GEAR,HELICAL
5306-00-695-7069INTERCHANGEABLE
BOLT,SPRING
5775
5950-00-732-8447INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
34008
5975-00-849-4082INTERCHANGEABLE
COVER,CONDUIT OUTLET
6105-01-369-0419INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
ECP4409T-4

Frequently Asked Questions

What is NSN 4820-00-311-5270?

NSN 4820-00-311-5270 is a Seat,valve, manufactured by Speakman Company Dba Speakman Div Plumbing, Safety, and Shower Products, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-311-5270?

NSN 4820-00-311-5270 has 2 cross-referenced part numbers: 5775 (Speakman Company Dba Speakman Div Plumbing, Safety, and Shower Products), 05-0775 (Speakman Company Dba Speakman Div Plumbing, Safety, and Shower Products).

What NSN replaces 4820-00-311-5270?

There are 12 known substitutes for 4820-00-311-5270: 2995-00-136-2420, 4730-00-188-6314, 3120-00-338-4845 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 05-0775?

Key specifications for 05-0775: Thread Quantity Per Inch: 27 SINGLE THREADED PORTION; Flange Seat to Disk End Height: 0.078 INCHES NOMINAL IN; Thread Class: 2A SINGLE THREADED PORTION A; Material: COPPER ALLOY OVERALL. 12 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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