PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20553-1003-1Cap,valve

Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace · NSN 4820-01-370-5303 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-370-5303 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-370-5303. Primary manufacturer part number: 20553-1003-1.
Features
  • Cap,valve — FSC 4820
  • Material: ALUMINUM ALLOY
  • 3 verified cross-references
  • Primary manufacturer: Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Aluminum Alloy construction
General Description

The Cap,valve, cataloged under National Stock Number 4820-01-370-5303, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-370-5303
Primary Part Number20553-1003-1
Item NameCap,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
StatusACTIVE
MaterialALUMINUM ALLOY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5950-00-647-661920553 INTERCHANGEABLE
Reactor
Gte Products Corp Sylvania Miniature Lighting Div
5950-00-726-2736 INTERCHANGEABLE
Coil,radio Frequency
5930-00-991-45292055-3 INTERCHANGEABLE
Switch,rotary
Janco Corporation Dba Janco Corp Div Mason Controls
7320-01-150-317020553 INTERCHANGEABLE
Cutter Assembly
Basic American Inc
4810-01-218-795120553 INTERCHANGEABLE
Valve,solenoid
Provision, Inc. Dba Provision Inc
4820-01-311-0954CPC25-15-V INTERCHANGEABLE
Valve,check
Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupler Division
4820-01-369-5146 INTERCHANGEABLE
Cap,valve
5120-01-430-8138 INTERCHANGEABLE
Crowfoot Attachment,socket Wrenc
6240-01-503-580320553 INTERCHANGEABLE
Lamp,incandescent
Cooper Crouse-Hinds Llc
6240-01-509-06995900-04 INTERCHANGEABLE
Lamp,incandescent
O.c.e.m. Acquisition Corp. Dba Multi Electric Mfg., Inc.
Cross-Reference Index
Part NumberManufacturer
20553 FIND 8 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
20553 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
20553-1003-1 PRIMARY Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
Related Parts
5950-00-647-6619INTERCHANGEABLE
REACTOR
20553
5950-00-726-2736INTERCHANGEABLE
COIL,RADIO FREQUENCY
5930-00-991-4529INTERCHANGEABLE
SWITCH,ROTARY
2055-3
7320-01-150-3170INTERCHANGEABLE
CUTTER ASSEMBLY
20553
4810-01-218-7951INTERCHANGEABLE
VALVE,SOLENOID
20553
4820-01-311-0954INTERCHANGEABLE
VALVE,CHECK
CPC25-15-V
4820-01-369-5146INTERCHANGEABLE
CAP,VALVE
5120-01-430-8138INTERCHANGEABLE
CROWFOOT ATTACHMENT,SOCKET WRENC
6240-01-503-5803INTERCHANGEABLE
LAMP,INCANDESCENT
20553
6240-01-509-0699INTERCHANGEABLE
LAMP,INCANDESCENT
5900-04

Frequently Asked Questions

What is NSN 4820-01-370-5303?

NSN 4820-01-370-5303 is a Cap,valve, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-370-5303?

NSN 4820-01-370-5303 has 3 cross-referenced part numbers: 20553 FIND 8 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 20553 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 20553-1003-1 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).

What NSN replaces 4820-01-370-5303?

There are 10 known substitutes for 4820-01-370-5303: 5950-00-647-6619, 5950-00-726-2736, 5930-00-991-4529 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20553-1003-1?

Key specifications for 20553-1003-1: Material: ALUMINUM ALLOY. 1 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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