PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

644594Nut,plain,hexagon

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5310-00-190-0085 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-190-0085 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-190-0085. Primary manufacturer part number: 644594.
Features
  • Nut,plain,hexagon — FSC 5310
  • Thread Quantity Per Inch: 32
  • Thread Direction: RIGHT-HAND
  • Thread Class: 2B
  • Bearing Surface Type: WASHER FACED
  • Material: STEEL COMP 303 OVERALL
  • Thread Series: UNF
  • Width Across Flats: 0.302 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-190-0085, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-190-0085
Primary Part Number644594
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Thread Quantity Per Inch32
Thread DirectionRIGHT-HAND
Thread Class2B
Bearing Surface TypeWASHER FACED
MaterialSTEEL COMP 303 OVERALL
Thread SeriesUNF
Width Across Flats0.302 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN
Nut StyleHEXAGON
Counterbore Diameter0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM NUT IN
Nominal Thread Size0.190 INCHES IN
Nut Height0.095 INCHES MINIMUM AND 0.105 INCHES MAXIMUM IN
Nut Counterbore Depth0.015 INCHES MINIMUM AND 0.025 INCHES MAXIMUM NUT IN
Material Document and ClassificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-840-0530294300-9 INTERCHANGEABLE
Nut,plain,hexagon
Specialty Components & Fasteners, Llc Dba Specialty Components & Fasteners Llc
Cross-Reference Index
Part NumberManufacturer
644594 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5310-00-840-0530INTERCHANGEABLE
NUT,PLAIN,HEXAGON
294300-9

Frequently Asked Questions

What is NSN 5310-00-190-0085?

NSN 5310-00-190-0085 is a Nut,plain,hexagon, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-190-0085?

NSN 5310-00-190-0085 has 1 cross-referenced part number: 644594 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 5310-00-190-0085?

There is 1 known substitute for 5310-00-190-0085: 5310-00-840-0530. Verify interchangeability with system specifications before substitution.

What are the specifications of 644594?

Key specifications for 644594: Thread Quantity Per Inch: 32; Thread Direction: RIGHT-HAND; Thread Class: 2B; Bearing Surface Type: WASHER FACED. 13 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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