PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILB857TYPE2STYLEA0RBGRADE1Nut,plain,hexagon

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-00-260-7893 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-260-7893 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-260-7893. Primary manufacturer part number: MILB857TYPE2STYLEA0RBGRADE1.
Features
  • Nut,plain,hexagon — FSC 5310
  • Thread Class: 2B
  • Bearing Surface Type: CHAMFERED OR WASHER FACED
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Nominal Thread Size: 0.250 INCHES IN
  • Thread Quantity Per Inch: 20
  • Surface Treatment Document and Classification: QQ-Z-325,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Nondefinitive Spec/std Data: 2 TYPE AND A STYLE AND B STYLE AND 1 GRADE
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-260-7893, 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 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-260-7893
Primary Part NumberMILB857TYPE2STYLEA0RBGRADE1
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 Class2B
Bearing Surface TypeCHAMFERED OR WASHER FACED
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Nominal Thread Size0.250 INCHES IN
Thread Quantity Per Inch20
Surface Treatment Document and ClassificationQQ-Z-325,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Nondefinitive Spec/std Data2 TYPE AND A STYLE AND B STYLE AND 1 GRADE
MaterialSTEEL OVERALL
Surface TreatmentZINC OVERALL
Nut StyleHEXAGON
Nut Height0.203 INCHES NOMINAL IN
Width Across Flats0.425 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-010-26340111 INTERCHANGEABLE
Nut,plain,hexagon
Harley Davidson Motor Co Inc
5310-00-188-7830 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-227-798943N6870 INTERCHANGEABLE
Nut,plain,hexagon
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5310-00-228-7641 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-260-7894 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-260-7897 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-260-7899 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-260-7900 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-260-7901 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-260-7912 INTERCHANGEABLE
Nut,plain,hexagon
Cross-Reference Index
Part NumberManufacturer
MILB857TYPE2STYLEA0RBGRADE1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-010-2634INTERCHANGEABLE
NUT,PLAIN,HEXAGON
0111
5310-00-188-7830INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-227-7989INTERCHANGEABLE
NUT,PLAIN,HEXAGON
43N6870
5310-00-228-7641INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-260-7894INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-260-7897INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-260-7899INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-260-7900INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-260-7901INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-260-7912INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-260-7913INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-260-7914INTERCHANGEABLE
NUT,PLAIN,HEXAGON

Frequently Asked Questions

What is NSN 5310-00-260-7893?

NSN 5310-00-260-7893 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 5310-00-260-7893?

NSN 5310-00-260-7893 has 1 cross-referenced part number: MILB857TYPE2STYLEA0RBGRADE1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-00-260-7893?

There are 12 known substitutes for 5310-00-260-7893: 5310-00-010-2634, 5310-00-188-7830, 5310-00-227-7989 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILB857TYPE2STYLEA0RBGRADE1?

Key specifications for MILB857TYPE2STYLEA0RBGRADE1: Thread Class: 2B; Bearing Surface Type: CHAMFERED OR WASHER FACED; Thread Series: UNIFIED NATIONAL COARSE (UNC); Nominal Thread Size: 0.250 INCHES IN. 13 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