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 5310-00-199-3148 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-199-3148 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-199-3148. Primary manufacturer part number: MILB857TYPE3STYLEA0RB.
Features
  • Nut,plain,hexagon — FSC 5310
  • Nut Style: HEXAGON
  • Nut Height: 0.125 INCHES NOMINAL IN
  • Bearing Surface Type: FLAT
  • Nominal Thread Size: 0.190 INCHES IN
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Thread Quantity Per Inch: 20
  • Nondefinitive Spec/std Data: A TYPE
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 5310-00-199-3148, 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
NSN5310-00-199-3148
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
Nut StyleHEXAGON
Nut Height0.125 INCHES NOMINAL IN
Bearing Surface TypeFLAT
Nominal Thread Size0.190 INCHES IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Thread Quantity Per Inch20
Nondefinitive Spec/std DataA TYPE
MaterialSTEEL OVERALL
Thread Class1B
Thread DirectionRIGHT-HAND
Width Across Flats0.362 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-199-3144 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-199-3145 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-199-3152 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
5310-00-260-7795 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
5310-00-199-3152INTERCHANGEABLE
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
5310-00-265-9585INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-265-9589INTERCHANGEABLE
NUT,PLAIN,HEXAGON

Frequently Asked Questions

What is NSN 5310-00-199-3148?

NSN 5310-00-199-3148 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 5310-00-199-3148?

NSN 5310-00-199-3148 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 5310-00-199-3148?

There are 12 known substitutes for 5310-00-199-3148: 5310-00-199-3144, 5310-00-199-3145, 5310-00-199-3152 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILB857TYPE3STYLEA0RB?

Key specifications for MILB857TYPE3STYLEA0RB: Nut Style: HEXAGON; Nut Height: 0.125 INCHES NOMINAL IN; Bearing Surface Type: FLAT; Nominal Thread Size: 0.190 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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