PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

G90231-2Packing Nut

Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok · NSN 4730-01-170-9865 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-170-9865 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-170-9865. Primary manufacturer part number: G90231-2.
Features
  • Packing Nut — FSC 4730
  • Casehardening Indicator: NOT CASEHARDENED
  • Screw Thread Series Designator: NPT
  • Screw Thread Location: EXTERNAL
  • Smallest Inside Diameter: 0.188 INCHES NOMINAL IN
  • Style Designator: HEXAGON, EXTERNAL THREAD, BOSS
  • Material: COPPER ALLOY 268 OR COPPER ALLOY 260 OR COPPER ALLOY 240 OR COPPER ALLOY 230 OR COPPER ALLOY 377 OR COPPER ALLOY 360 OR COPPER ALLOY 342 OR COPPER ALLOY 353 OR COPPER ALLOY 262 OR COPPER ALLOY 270 OR COPPER ALLOY 272 OR COPPER ALLOY 274 OR COPPER ALLOY 280 OR COPPER ALLOY 330 OR COPPER ALLOY 331 OR COPPER ALLOY 332 OR COPPER ALLOY 335 OR COPPER ALLOY 340 OR COPPER ALLOY 344 OR COPPER ALLOY 345 OR COPPER ALLOY 347 OR COPPER ALLOY 348 OR COPPER ALLOY 350 OR COPPER ALLOY 356 OR COPPER ALLOY 370 OR COPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 465 OR COPPER ALLOY 466 OR COPPER ALLOY 467 OR COPPER ALLOY 482 OR COPPER ALLOY 485
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy 268 or Copper Alloy 260 or Copper Alloy 240 or Copper Alloy 230 or Copper Alloy 377 or Copper Alloy 360 or Copper Alloy 342 or Copper Alloy 353 or Copper Alloy 262 or Copper Alloy 270 or Copper Alloy 272 or Copper Alloy 274 or Copper Alloy 280 or Copper Alloy 330 or Copper Alloy 331 or Copper Alloy 332 or Copper Alloy 335 or Copper Alloy 340 or Copper Alloy 344 or Copper Alloy 345 or Copper Alloy 347 or Copper Alloy 348 or Copper Alloy 350 or Copper Alloy 356 or Copper Alloy 370 or Copper Alloy 462 or Copper Alloy 464 or Copper Alloy 465 or Copper Alloy 466 or Copper Alloy 467 or Copper Alloy 482 or Copper Alloy 485 construction
General Description

The Packing Nut, cataloged under National Stock Number 4730-01-170-9865, 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 Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok. Government technical data includes 7 verified specifications, 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-170-9865
Primary Part NumberG90231-2
Item NamePacking Nut
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerCircor Instrumentation Technologies, Inc. Dba Hoke Gyrolok
StatusACTIVE
Casehardening IndicatorNOT CASEHARDENED
Screw Thread Series DesignatorNPT
Screw Thread LocationEXTERNAL
Smallest Inside Diameter0.188 INCHES NOMINAL IN
Style DesignatorHEXAGON, EXTERNAL THREAD, BOSS
MaterialCOPPER ALLOY 268 OR COPPER ALLOY 260 OR COPPER ALLOY 240 OR COPPER ALLOY 230 OR COPPER ALLOY 377 OR COPPER ALLOY 360 OR COPPER ALLOY 342 OR COPPER ALLOY 353 OR COPPER ALLOY 262 OR COPPER ALLOY 270 OR COPPER ALLOY 272 OR COPPER ALLOY 274 OR COPPER ALLOY 280 OR COPPER ALLOY 330 OR COPPER ALLOY 331 OR COPPER ALLOY 332 OR COPPER ALLOY 335 OR COPPER ALLOY 340 OR COPPER ALLOY 344 OR COPPER ALLOY 345 OR COPPER ALLOY 347 OR COPPER ALLOY 348 OR COPPER ALLOY 350 OR COPPER ALLOY 356 OR COPPER ALLOY 370 OR COPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 465 OR COPPER ALLOY 466 OR COPPER ALLOY 467 OR COPPER ALLOY 482 OR COPPER ALLOY 485
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-100-3541 INTERCHANGEABLE
Cone and Rollers,tapered Roller
5940-00-227-824688B685 INTERCHANGEABLE
Terminal Board
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5330-00-306-5336102B18 INTERCHANGEABLE
Gasket
Cummins Power Generation Inc.
5961-00-356-5697 INTERCHANGEABLE
Transistor
5325-00-874-29901021-8 INTERCHANGEABLE
Insert,screw Thread
Hamilton Sundstrand Corporation
5999-00-881-3082 INTERCHANGEABLE
Wire Mesh,knitted
5945-00-951-5723 INTERCHANGEABLE
Relay,electromagnetic
5905-01-116-8934460212-28 INTERCHANGEABLE
Resistor Network,fixed,film
Bae Systems Controls Inc
5970-01-139-0854 INTERCHANGEABLE
Insulator,plate
5310-01-158-784110218 INTERCHANGEABLE
Nut,self-Locking,hexagon
Eaton Corp
Cross-Reference Index
Part NumberManufacturer
G90231-2 PRIMARY Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA)
10218 Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA)
10218-1 PIECE 23 Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA)
Related Parts
3110-00-100-3541INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
5940-00-227-8246INTERCHANGEABLE
TERMINAL BOARD
88B685
5330-00-306-5336INTERCHANGEABLE
GASKET
102B18
5961-00-356-5697INTERCHANGEABLE
TRANSISTOR
5325-00-874-2990INTERCHANGEABLE
INSERT,SCREW THREAD
1021-8
5999-00-881-3082INTERCHANGEABLE
WIRE MESH,KNITTED
5945-00-951-5723INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5905-01-116-8934INTERCHANGEABLE
RESISTOR NETWORK,FIXED,FILM
460212-28
5970-01-139-0854INTERCHANGEABLE
INSULATOR,PLATE
5310-01-158-7841INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
10218
5310-01-170-4122INTERCHANGEABLE
NUT,PLAIN,CAP
4820-01-199-6395INTERCHANGEABLE
SPINDLE,DISK AY
G80050-1

Frequently Asked Questions

What is NSN 4730-01-170-9865?

NSN 4730-01-170-9865 is a Packing Nut, manufactured by Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-170-9865?

NSN 4730-01-170-9865 has 3 cross-referenced part numbers: G90231-2 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok), 10218 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok), 10218-1 PIECE 23 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok).

What NSN replaces 4730-01-170-9865?

There are 12 known substitutes for 4730-01-170-9865: 3110-00-100-3541, 5940-00-227-8246, 5330-00-306-5336 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of G90231-2?

Key specifications for G90231-2: Special Features: LEVEL I REQUIREMENTS DO NOT APPLY; Casehardening Indicator: NOT CASEHARDENED; Screw Thread Series Designator: NPT; Screw Thread Location: EXTERNAL. 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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