PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILB857TYPE4STYLEA0RBNut,plain,hexagon

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-00-189-5162 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-189-5162 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-189-5162. Primary manufacturer part number: MILB857TYPE4STYLEA0RB.
Features
  • Nut,plain,hexagon — FSC 5310
  • Material: STEEL COMP 410 OR STEEL COMP 416 OVERALL
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Nominal Thread Size: 0.312 INCHES IN
  • Thread Quantity Per Inch: 18
  • Bearing Surface Type: CHAMFERED OR WASHER FACED
  • Nut Height: 0.172 INCHES NOMINAL IN
  • Nut Style: HEXAGON
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 410 or Steel Comp 416 Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-189-5162, 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 12 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-189-5162
Primary Part NumberMILB857TYPE4STYLEA0RB
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
MaterialSTEEL COMP 410 OR STEEL COMP 416 OVERALL
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Nominal Thread Size0.312 INCHES IN
Thread Quantity Per Inch18
Bearing Surface TypeCHAMFERED OR WASHER FACED
Nut Height0.172 INCHES NOMINAL IN
Nut StyleHEXAGON
Width Across Flats0.547 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
Material Document and ClassificationQQ-S-763 FED SPEC 1ST MATERIAL RESPONSE OR ASTM A582 ASSN STD 2ND MATERIAL RESPONSE OVERALL
Thread Class2B
Thread DirectionRIGHT-HAND
Surface TreatmentPASSIVATE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5310-00-189-5161 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-189-5165 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-189-8471 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-189-8476 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-297-883221824 INTERCHANGEABLE
Nut,plain,hexagon
Dresser, Llc
5310-00-297-88333153766PC126 INTERCHANGEABLE
Nut,plain,hexagon
Naval Ship Systems Command
Cross-Reference Index
Part NumberManufacturer
MILB857TYPE4STYLEA0RB Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-189-5161INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-189-5165INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-189-8471INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-189-8476INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-297-8832INTERCHANGEABLE
NUT,PLAIN,HEXAGON
21824
5310-00-297-8833INTERCHANGEABLE
NUT,PLAIN,HEXAGON
3153766PC126

Frequently Asked Questions

What is NSN 5310-00-189-5162?

NSN 5310-00-189-5162 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 5310-00-189-5162?

NSN 5310-00-189-5162 has 1 cross-referenced part number: MILB857TYPE4STYLEA0RB (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-00-189-5162?

There are 6 known substitutes for 5310-00-189-5162: 5310-00-189-5161, 5310-00-189-5165, 5310-00-189-8471 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILB857TYPE4STYLEA0RB?

Key specifications for MILB857TYPE4STYLEA0RB: Material: STEEL COMP 410 OR STEEL COMP 416 OVERALL; Thread Series: UNIFIED NATIONAL COARSE (UNC); Nominal Thread Size: 0.312 INCHES IN; Thread Quantity Per Inch: 18. 12 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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