PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

804-19-1Packing Nut

King Nutronics Corporation Dba King Nutronics · NSN 4730-01-123-3279 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-123-3279 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-123-3279. Primary manufacturer part number: 804-19-1.
Features
  • Packing Nut — FSC 4730
  • Thread Direction: RIGHT-HAND
  • Screw Thread Location: EXTERNAL
  • Style Designator: HEXAGON, EXTERNAL THREAD, INTERNAL SHOUL DER
  • Smallest Inside Diameter: 0.332 INCHES NOMINAL IN
  • Major Unthreaded Outside Diameter: 0.591 INCHES NOMINAL IN
  • Width Across Flats: 0.875 INCHES NOMINAL IN
  • Length to Shoulder: 0.148 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 303 construction
General Description

The Packing Nut, cataloged under National Stock Number 4730-01-123-3279, 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 14 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-123-3279
Primary Part Number804-19-1
Item NamePacking Nut
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerKing Nutronics Corporation Dba King Nutronics
StatusACTIVE
Thread DirectionRIGHT-HAND
Screw Thread LocationEXTERNAL
Style DesignatorHEXAGON, EXTERNAL THREAD, INTERNAL SHOUL DER
Smallest Inside Diameter0.332 INCHES NOMINAL IN
Major Unthreaded Outside Diameter0.591 INCHES NOMINAL IN
Width Across Flats0.875 INCHES NOMINAL IN
Length to Shoulder0.148 INCHES NOMINAL IN
MaterialSTEEL COMP 303
Screw Thread Series DesignatorUN
Casehardening IndicatorNOT CASEHARDENED
Largest Inside Diameter0.460 INCHES MINIMUM AND 0.462 INCHES MAXIMUM IN
Thread Length0.545 INCHES NOMINAL IN
Thread Size11/16-16
Thread Class3A A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
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
2520-00-821-9441804191 INTERCHANGEABLE
Piston
Fwd Seagrave Holdings Lp
1337-00-952-39512516361 INTERCHANGEABLE
Igniter,rocket Motor
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
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
4730-01-187-1922804-19-11 INTERCHANGEABLE
Nut,union
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
Cross-Reference Index
Part NumberManufacturer
804-19 King Nutronics Corporation Dba King Nutronics (USA)
804-19-1 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
2520-00-821-9441INTERCHANGEABLE
PISTON
804191
1337-00-952-3951INTERCHANGEABLE
IGNITER,ROCKET MOTOR
2516361
3110-01-155-8516INTERCHANGEABLE
BALL,BEARING
804-1-9
4820-01-180-2999INTERCHANGEABLE
ADAPTER,VALVE
804-19-7
4730-01-187-1922INTERCHANGEABLE
NUT,UNION
804-19-11
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 4730-01-123-3279?

NSN 4730-01-123-3279 is a Packing Nut, 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 4730-01-123-3279?

NSN 4730-01-123-3279 has 2 cross-referenced part numbers: 804-19 (King Nutronics Corporation Dba King Nutronics), 804-19-1 (King Nutronics Corporation Dba King Nutronics).

What NSN replaces 4730-01-123-3279?

There are 11 known substitutes for 4730-01-123-3279: 6210-00-168-0701, 5950-00-231-1164, 2520-00-821-9441 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 804-19-1?

Key specifications for 804-19-1: Thread Direction: RIGHT-HAND; Part Name Assigned by Controlling Agency: HOUSING; Screw Thread Location: EXTERNAL; Style Designator: HEXAGON, EXTERNAL THREAD, INTERNAL SHOUL DER. 16 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com