PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20-4-23Nut,plain,hexagon

Clarostat Sensors and Controls · NSN 5310-00-208-6780 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-208-6780 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-208-6780. Primary manufacturer part number: 20-4-23.
Features
  • Nut,plain,hexagon — FSC 5310
  • Width Across Flats: 0.312 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND
  • Thread Series: UNEF
  • Bearing Surface Type: CHAMFERED
  • Nominal Thread Size: 0.250 INCHES IN
  • Thread Quantity Per Inch: 32
  • Surface Treatment: NICKEL OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-208-6780, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Clarostat Sensors and Controls. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-208-6780
Primary Part Number20-4-23
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerClarostat Sensors and Controls
StatusCANCELLED
Width Across Flats0.312 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Thread SeriesUNEF
Bearing Surface TypeCHAMFERED
Nominal Thread Size0.250 INCHES IN
Thread Quantity Per Inch32
Surface TreatmentNICKEL OVERALL
Material Document and ClassificationQQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialCOPPER ALLOY OVERALL
Nut StyleHEXAGON
Nut Height0.062 INCHES NOMINAL IN
Thread Class3B
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5330-00-757-342220108 INTERCHANGEABLE
Packing,preformed
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
5945-00-946-928920423 INTERCHANGEABLE
Solenoid,electrical
Staco Systems, Inc. Dba Staco Systems Div Dba Staco Systems
5935-01-014-78592922908 INTERCHANGEABLE
Connector Body,receptacle,electr
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5975-01-298-1522204-23 INTERCHANGEABLE
Conduit Assembly,flexible
Dcx-Chol Enterprises, Inc.
5340-01-340-4803 INTERCHANGEABLE
Handle,manual Control
4820-01-643-052420423 INTERCHANGEABLE
Valve,ball
United States Plastic Corp
6650-01-689-257920423 INTERCHANGEABLE
Cap,lens
Amerex Corporation Dba Amerex Corp
Cross-Reference Index
Part NumberManufacturer
P334-0266-00 Allied Products Corp Pheoll Mfg Co Div (USA)
20-4-23 PRIMARY Clarostat Sensors and Controls (USA)
010532030 PRIMARY Clarostat Sensors and Controls (USA)
01053203 PRIMARY Clarostat Sensors and Controls (USA)
Related Parts
5330-00-757-3422INTERCHANGEABLE
PACKING,PREFORMED
20108
5945-00-946-9289INTERCHANGEABLE
SOLENOID,ELECTRICAL
20423
5935-01-014-7859INTERCHANGEABLE
CONNECTOR BODY,RECEPTACLE,ELECTR
2922908
5975-01-298-1522INTERCHANGEABLE
CONDUIT ASSEMBLY,FLEXIBLE
204-23
5340-01-340-4803INTERCHANGEABLE
HANDLE,MANUAL CONTROL
4820-01-643-0524INTERCHANGEABLE
VALVE,BALL
20423
6650-01-689-2579INTERCHANGEABLE
CAP,LENS
20423

Frequently Asked Questions

What is NSN 5310-00-208-6780?

NSN 5310-00-208-6780 is a Nut,plain,hexagon, manufactured by Clarostat Sensors and Controls, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-208-6780?

NSN 5310-00-208-6780 has 4 cross-referenced part numbers: P334-0266-00 (Allied Products Corp Pheoll Mfg Co Div), 20-4-23 (Clarostat Sensors and Controls), 010532030 (Clarostat Sensors and Controls), 01053203 (Clarostat Sensors and Controls).

What NSN replaces 5310-00-208-6780?

There are 7 known substitutes for 5310-00-208-6780: 5330-00-757-3422, 5945-00-946-9289, 5935-01-014-7859 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20-4-23?

Key specifications for 20-4-23: Width Across Flats: 0.312 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND; Thread Series: UNEF; Bearing Surface Type: CHAMFERED. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-208-6780 still in active supply?

NSN 5310-00-208-6780 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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