PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

804-19-11Nut,union

King Nutronics Corporation Dba King Nutronics · NSN 4730-01-187-1922 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-187-1922 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-187-1922. Primary manufacturer part number: 804-19-11.
Features
  • Nut,union — FSC 4730
  • Thread Class: 3B
  • Shoulder Step Width: 0.125 INCHES NOMINAL IN
  • Shoulder Width: 0.125 INCHES NOMINAL IN
  • Smallest Inside Diameter: 0.750 INCHES NOMINAL IN
  • Nut Style: HEXAGON
  • Width Across Flats: 1.125 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Nut,union, cataloged under National Stock Number 4730-01-187-1922, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is King Nutronics Corporation Dba King Nutronics. 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-187-1922
Primary Part Number804-19-11
Item NameNut,union
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerKing Nutronics Corporation Dba King Nutronics
StatusACTIVE
Thread Class3B
Shoulder Step Width0.125 INCHES NOMINAL IN
Shoulder Width0.125 INCHES NOMINAL IN
Smallest Inside Diameter0.750 INCHES NOMINAL IN
Nut StyleHEXAGON
Width Across Flats1.125 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
MaterialSTEEL COMP 303 OVERALL
Nominal Thread Size0.938 INCHES IN
Thread SeriesUNEF
Nut Height0.750 INCHES NOMINAL IN
Thread Quantity Per Inch20
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
6210-00-168-070180419 INTERCHANGEABLE
Insert,legend,light Indicator
Ant Company of VA, the
5950-00-231-1164164122 INTERCHANGEABLE
Transformer,power
Raytheon Company Div Corp
4730-01-123-3279804-19-1 INTERCHANGEABLE
Packing Nut
King Nutronics Corporation Dba King Nutronics
3110-01-155-8516804-1-9 INTERCHANGEABLE
Ball,bearing
King Nutronics Corporation Dba King Nutronics
4820-01-180-2999804-19-7 INTERCHANGEABLE
Adapter,valve
King Nutronics Corporation Dba King Nutronics
4820-01-187-6939804-19-5 INTERCHANGEABLE
Seat,valve
King Nutronics Corporation Dba King Nutronics
4730-01-187-7086804-19-9 INTERCHANGEABLE
Nipple
King Nutronics Corporation Dba King Nutronics
4820-01-187-7144804-19-3 INTERCHANGEABLE
Stem,fluid Valve
King Nutronics Corporation Dba King Nutronics
5120-01-601-5179 INTERCHANGEABLE
Screwdriver Attachment,socket Wr
Cross-Reference Index
Part NumberManufacturer
804-19 King Nutronics Corporation Dba King Nutronics (USA)
804-19-11 PRIMARY King Nutronics Corporation Dba King Nutronics (USA)
Related Parts
6210-00-168-0701INTERCHANGEABLE
INSERT,LEGEND,LIGHT INDICATOR
80419
5950-00-231-1164INTERCHANGEABLE
TRANSFORMER,POWER
164122
4730-01-123-3279INTERCHANGEABLE
PACKING NUT
804-19-1
3110-01-155-8516INTERCHANGEABLE
BALL,BEARING
804-1-9
4820-01-180-2999INTERCHANGEABLE
ADAPTER,VALVE
804-19-7
4820-01-187-6939INTERCHANGEABLE
SEAT,VALVE
804-19-5
4730-01-187-7086INTERCHANGEABLE
NIPPLE
804-19-9
4820-01-187-7144INTERCHANGEABLE
STEM,FLUID VALVE
804-19-3
5120-01-601-5179INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR

Frequently Asked Questions

What is NSN 4730-01-187-1922?

NSN 4730-01-187-1922 is a Nut,union, manufactured by King Nutronics Corporation Dba King Nutronics, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-187-1922?

NSN 4730-01-187-1922 has 2 cross-referenced part numbers: 804-19 (King Nutronics Corporation Dba King Nutronics), 804-19-11 (King Nutronics Corporation Dba King Nutronics).

What NSN replaces 4730-01-187-1922?

There are 9 known substitutes for 4730-01-187-1922: 6210-00-168-0701, 5950-00-231-1164, 4730-01-123-3279 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 804-19-11?

Key specifications for 804-19-11: Thread Class: 3B; Shoulder Step Width: 0.125 INCHES NOMINAL IN; Shoulder Width: 0.125 INCHES NOMINAL IN; Smallest Inside Diameter: 0.750 INCHES NOMINAL IN. 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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