PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

14756Disk,valve

Ashcroft Inc Dba Heise · NSN 4820-00-036-1870 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-036-1870 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-036-1870. Primary manufacturer part number: 14756.
Features
  • Disk,valve — FSC 4820
  • Nominal Thread Size: 0.562 INCHES IN
  • Material: STEEL
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Seat Angle: 45.0 DEGREES NOMINAL
  • Style Designator: PLUG
  • Outside Diameter: 2.990 INCHES NOMINAL IN
  • Thread Class: 2B
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-00-036-1870, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Ashcroft Inc Dba Heise. 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-036-1870
Primary Part Number14756
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusACTIVE
Nominal Thread Size0.562 INCHES IN
MaterialSTEEL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Seat Angle45.0 DEGREES NOMINAL
Style DesignatorPLUG
Outside Diameter2.990 INCHES NOMINAL IN
Thread Class2B
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
2540-00-693-0605 INTERCHANGEABLE
Cover,seat,vehicular
5320-00-801-4799NAS1475-06 INTERCHANGEABLE
Pin-Rivet
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
1095-01-239-921914756 INTERCHANGEABLE
Holster,pistol
Bianchi International Dba Bae Systems Products Group
5330-01-301-2837 INTERCHANGEABLE
Gasket
6240-01-344-5059150/120R/SP/SS/120V INTERCHANGEABLE
Lamp,incandescent
Gte Products Corp Sylvania Miniature Lighting Div
5998-01-487-863914756 INTERCHANGEABLE
Printed Circuit Board
Honeywell International Inc. Dba Honeywell Div Aerospace -Olathe Hums Div
5365-01-733-180314756 INTERCHANGEABLE
Spacer,sleeve
Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc
Cross-Reference Index
Part NumberManufacturer
14756 PRIMARY Ashcroft Inc Dba Heise (USA)
Related Parts
2540-00-693-0605INTERCHANGEABLE
COVER,SEAT,VEHICULAR
5320-00-801-4799INTERCHANGEABLE
PIN-RIVET
NAS1475-06
1095-01-239-9219INTERCHANGEABLE
HOLSTER,PISTOL
14756
5330-01-301-2837INTERCHANGEABLE
GASKET
6240-01-344-5059INTERCHANGEABLE
LAMP,INCANDESCENT
150/120R/SP/SS/120V
5998-01-487-8639INTERCHANGEABLE
PRINTED CIRCUIT BOARD
14756
5365-01-733-1803INTERCHANGEABLE
SPACER,SLEEVE
14756

Frequently Asked Questions

What is NSN 4820-00-036-1870?

NSN 4820-00-036-1870 is a Disk,valve, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-036-1870?

NSN 4820-00-036-1870 has 1 cross-referenced part number: 14756 (Ashcroft Inc Dba Heise).

What NSN replaces 4820-00-036-1870?

There are 7 known substitutes for 4820-00-036-1870: 2540-00-693-0605, 5320-00-801-4799, 1095-01-239-9219 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 14756?

Key specifications for 14756: Nominal Thread Size: 0.562 INCHES IN; Overall Height: 4.000 INCHES NOMINAL IN; Material: STEEL; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC). 8 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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