PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FFN836Nut,plain,hexagon

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5310-00-158-5171 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-158-5171 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-158-5171. Primary manufacturer part number: FFN836.
Features
  • Nut,plain,hexagon — FSC 5310
  • Nut Style: HEXAGON
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Bearing Surface Type: CHAMFERED OR WASHER FACED
  • Nominal Thread Size: 0.625 INCHES IN
  • Hardness Rating: 69.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM
  • Criticality Code Justification: ZZZW
  • Thread Quantity Per Inch: 11
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 5310-00-158-5171, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-158-5171
Primary Part NumberFFN836
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Nut StyleHEXAGON
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Bearing Surface TypeCHAMFERED OR WASHER FACED
Nominal Thread Size0.625 INCHES IN
Hardness Rating69.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM
Criticality Code JustificationZZZW
Thread Quantity Per Inch11
Nut Height0.363 INCHES MINIMUM AND 0.387 INCHES MAXIMUM IN
Surface TreatmentCADMIUM OVERALL
Width Across Flats0.922 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Departure From Cited DocumentCERTIFIED FREE FROM MERCURY CONTAMINATION
Thread Class2B
Nondefinitive Spec/std Data2 TYPE AND 5 STYLE AND B GRADE
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5310-00-851-2677 INTERCHANGEABLE
Nut,plain,hexagon
5310-01-280-6749 INTERCHANGEABLE
Nut,plain,hexagon
Cross-Reference Index
Part NumberManufacturer
FFN836 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
MS35691-49 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-851-2677INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-01-280-6749INTERCHANGEABLE
NUT,PLAIN,HEXAGON

Frequently Asked Questions

What is NSN 5310-00-158-5171?

NSN 5310-00-158-5171 is a Nut,plain,hexagon, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-158-5171?

NSN 5310-00-158-5171 has 2 cross-referenced part numbers: FFN836 (Federal Specifications Promulgated by General Services Administration Washington DC), MS35691-49 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-00-158-5171?

There are 2 known substitutes for 5310-00-158-5171: 5310-00-851-2677, 5310-01-280-6749. Verify interchangeability with system specifications before substitution.

What are the specifications of FFN836?

Key specifications for FFN836: Nut Style: HEXAGON; Thread Series: UNIFIED NATIONAL COARSE (UNC); Bearing Surface Type: CHAMFERED OR WASHER FACED; Nominal Thread Size: 0.625 INCHES IN. 16 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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