PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

45253Disk,valve

Pneudraulics, Inc. · NSN 4820-01-128-5914 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-128-5914 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-128-5914. Primary manufacturer part number: 45253.
Features
  • Disk,valve — FSC 4820
  • Seat Angle: 30.0 DEGREES NOMINAL
  • Outside Diameter: 1.000 INCHES NOMINAL IN
  • Material Document and Classification: QQ-S-763, CLASS 440C, COND A FED SPEC SINGLE MATERIAL RESPONSE
  • Flange Seat to Disk End Height: 2.415 INCHES NOMINAL IN
  • Style Designator: POPPET
  • Inside Diameter: 0.250 INCHES NOMINAL IN
  • Material: STEEL COMP 440C
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 440c construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-128-5914, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Pneudraulics, Inc.. Government technical data includes 8 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-128-5914
Primary Part Number45253
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerPneudraulics, Inc.
StatusACTIVE
Seat Angle30.0 DEGREES NOMINAL
Outside Diameter1.000 INCHES NOMINAL IN
Material Document and ClassificationQQ-S-763, CLASS 440C, COND A FED SPEC SINGLE MATERIAL RESPONSE
Flange Seat to Disk End Height2.415 INCHES NOMINAL IN
Style DesignatorPOPPET
Inside Diameter0.250 INCHES NOMINAL IN
MaterialSTEEL COMP 440C
Shank Diameter0.501 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5998-01-031-385445253 INTERCHANGEABLE
Printed Wiring Board
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
5342-01-063-8205 INTERCHANGEABLE
Binding Post
6220-01-202-555445253 INTERCHANGEABLE
Light,marker,clearance
Grote Industries Inc Dba Grote Manufacturing Co Div Military Products
2540-01-513-950045253 INTERCHANGEABLE
Seat,vehicular
Martinez and Turek, Inc. Dba Martinez & Turek Inc
Cross-Reference Index
Part NumberManufacturer
45253 PRIMARY Pneudraulics, Inc. (USA)
Related Parts
5998-01-031-3854INTERCHANGEABLE
PRINTED WIRING BOARD
45253
5342-01-063-8205INTERCHANGEABLE
BINDING POST
6220-01-202-5554INTERCHANGEABLE
LIGHT,MARKER,CLEARANCE
45253
2540-01-513-9500INTERCHANGEABLE
SEAT,VEHICULAR
45253

Frequently Asked Questions

What is NSN 4820-01-128-5914?

NSN 4820-01-128-5914 is a Disk,valve, manufactured by Pneudraulics, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-128-5914?

NSN 4820-01-128-5914 has 1 cross-referenced part number: 45253 (Pneudraulics, Inc.).

What NSN replaces 4820-01-128-5914?

There are 4 known substitutes for 4820-01-128-5914: 5998-01-031-3854, 5342-01-063-8205, 6220-01-202-5554 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 45253?

Key specifications for 45253: Seat Angle: 30.0 DEGREES NOMINAL; Outside Diameter: 1.000 INCHES NOMINAL IN; Material Document and Classification: QQ-S-763, CLASS 440C, COND A FED SPEC SINGLE MATERIAL RESPONSE; Flange Seat to Disk End Height: 2.415 INCHES NOMINAL IN. 9 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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