PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILB857TYPE3STYLEA0RBNut,plain,hexagon

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-00-265-9585 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-265-9585 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-265-9585. Primary manufacturer part number: MILB857TYPE3STYLEA0RB.
Features
  • Nut,plain,hexagon — FSC 5310
  • Thread Direction: RIGHT-HAND
  • Width Across Flats: 0.861 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
  • Bearing Surface Type: CHAMFERED OR WASHER FACED
  • Nominal Thread Size: 0.562 INCHES IN
  • Thread Quantity Per Inch: 18
  • Thread Series: UNF
  • Material: COPPER ALLOY 268 OR COPPER ALLOY 260 OR COPPER ALLOY 240 OR COPPER ALLOY 230 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 360 OR COPPER ALLOY 370 OR COPPER ALLOY 377 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 OVERALL
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 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 360 or Copper Alloy 370 or Copper Alloy 377 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 Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-265-9585, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 11 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-265-9585
Primary Part NumberMILB857TYPE3STYLEA0RB
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Thread DirectionRIGHT-HAND
Width Across Flats0.861 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
Bearing Surface TypeCHAMFERED OR WASHER FACED
Nominal Thread Size0.562 INCHES IN
Thread Quantity Per Inch18
Thread SeriesUNF
MaterialCOPPER ALLOY 268 OR COPPER ALLOY 260 OR COPPER ALLOY 240 OR COPPER ALLOY 230 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 360 OR COPPER ALLOY 370 OR COPPER ALLOY 377 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 OVERALL
Nondefinitive Spec/std Data3 TYPE AND A STYLE AND B STYLE
Nut StyleHEXAGON
Nut Height0.473 INCHES MINIMUM AND 0.496 INCHES MAXIMUM IN
Thread Class2B
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-199-3144 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-199-3145 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-199-3148 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-199-3152 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-199-3153 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-199-3154 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-199-3155 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-260-7789 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-260-7790 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-260-7794 INTERCHANGEABLE
Nut,plain,hexagon
Cross-Reference Index
Part NumberManufacturer
MILB857TYPE3STYLEA0RB Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-199-3144INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-199-3145INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-199-3148INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-199-3152INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-199-3153INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-199-3154INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-199-3155INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-260-7789INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-260-7790INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-260-7794INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-260-7795INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-265-9589INTERCHANGEABLE
NUT,PLAIN,HEXAGON

Frequently Asked Questions

What is NSN 5310-00-265-9585?

NSN 5310-00-265-9585 is a Nut,plain,hexagon, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-265-9585?

NSN 5310-00-265-9585 has 1 cross-referenced part number: MILB857TYPE3STYLEA0RB (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-00-265-9585?

There are 12 known substitutes for 5310-00-265-9585: 5310-00-199-3144, 5310-00-199-3145, 5310-00-199-3148 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILB857TYPE3STYLEA0RB?

Key specifications for MILB857TYPE3STYLEA0RB: Thread Direction: RIGHT-HAND; Width Across Flats: 0.861 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN; Bearing Surface Type: CHAMFERED OR WASHER FACED; Nominal Thread Size: 0.562 INCHES IN. 11 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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