PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21101Disk,valve

United Brass Works, Inc. Dba United Brass Works · NSN 4820-01-016-5050 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-016-5050 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-016-5050. Primary manufacturer part number: 21101.
Features
  • Disk,valve — FSC 4820
  • Pressure Rating: 400.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
  • Style Designator: PLAIN
  • Material: RUBBER CHLOROPRENE CLASS CR
  • Outside Diameter: 1.000 INCHES NOMINAL IN
  • Media for Which Designed: NITROGEN, GASEOUS
  • Inside Diameter: 0.188 INCHES NOMINAL IN
  • 2 verified cross-references
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber Chloroprene Class Cr construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-016-5050, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is United Brass Works, Inc. Dba United Brass Works. Government technical data includes 6 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
NSN4820-01-016-5050
Primary Part Number21101
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerUnited Brass Works, Inc. Dba United Brass Works
StatusACTIVE
Pressure Rating400.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
Style DesignatorPLAIN
MaterialRUBBER CHLOROPRENE CLASS CR
Outside Diameter1.000 INCHES NOMINAL IN
Media for Which DesignedNITROGEN, GASEOUS
Inside Diameter0.188 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5365-00-214-263421101 INTERCHANGEABLE
Shim,bearing Spacer
Industrial Technologies and Services Llc
5945-00-405-4034UV400S3 INTERCHANGEABLE
Relay,electromagnetic
Te Connectivity Corporation
5120-00-449-80832205 INTERCHANGEABLE
Wrench,adjustable
Reed Manufacturing Company
2835-00-654-67961620C163 INTERCHANGEABLE
Pinion and Gear Ass
Triumph Gear Systems Inc Dba Triumph Gear Systems Inc
1660-00-736-790721101 INTERCHANGEABLE
Cover,regulator Ass
Avox Systems Inc Dba Avox Systems Inc
6130-00-849-837721-101 INTERCHANGEABLE
Power Supply
Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc
5965-00-946-2021215-330-001-694 INTERCHANGEABLE
Microphone Element
Roanwell, Llc
3433-00-946-95520330-0006 INTERCHANGEABLE
Tip,cutting Torch
Victor Equipment Co
5330-01-019-323321101 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5330-01-067-9691 INTERCHANGEABLE
Seal,plain Encased
Cross-Reference Index
Part NumberManufacturer
21101 United Brass Works, Inc. Dba United Brass Works (USA)
211011 United Brass Works, Inc. Dba United Brass Works (USA)
Related Parts
5365-00-214-2634INTERCHANGEABLE
SHIM,BEARING SPACER
21101
5945-00-405-4034INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
UV400S3
5120-00-449-8083INTERCHANGEABLE
WRENCH,ADJUSTABLE
2205
2835-00-654-6796INTERCHANGEABLE
PINION AND GEAR ASS
1620C163
1660-00-736-7907INTERCHANGEABLE
COVER,REGULATOR ASS
21101
6130-00-849-8377INTERCHANGEABLE
POWER SUPPLY
21-101
5965-00-946-2021INTERCHANGEABLE
MICROPHONE ELEMENT
215-330-001-694
3433-00-946-9552INTERCHANGEABLE
TIP,CUTTING TORCH
0330-0006
5330-01-019-3233INTERCHANGEABLE
SEAL,PLAIN ENCASED
21101
5330-01-067-9691INTERCHANGEABLE
SEAL,PLAIN ENCASED
6250-01-212-9605INTERCHANGEABLE
BALLAST,LAMP
13227E6777-24
3433-01-266-3715INTERCHANGEABLE
TIP,CUTTING TORCH

Frequently Asked Questions

What is NSN 4820-01-016-5050?

NSN 4820-01-016-5050 is a Disk,valve, manufactured by United Brass Works, Inc. Dba United Brass Works, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-016-5050?

NSN 4820-01-016-5050 has 2 cross-referenced part numbers: 21101 (United Brass Works, Inc. Dba United Brass Works), 211011 (United Brass Works, Inc. Dba United Brass Works).

What NSN replaces 4820-01-016-5050?

There are 12 known substitutes for 4820-01-016-5050: 5365-00-214-2634, 5945-00-405-4034, 5120-00-449-8083 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21101?

Key specifications for 21101: Pressure Rating: 400.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Style Designator: PLAIN; Material: RUBBER CHLOROPRENE CLASS CR; Outside Diameter: 1.000 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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