PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

206-3Nut,plain,castellated,hexagon

Safran Power Usa Llc · NSN 5310-00-176-8196 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-176-8196 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-176-8196. Primary manufacturer part number: 206-3.
Features
  • Nut,plain,castellated,hexagon — FSC 5310
  • Nominal Thread Size: 0.250 INCHES IN
  • Nut Style: CASTELLATED, HEXAGON
  • Thread Quantity Per Inch: 28
  • Bearing Surface Type: WASHER FACED
  • Thread Series: UNF
  • Material: STEEL OVERALL
  • Thread Class: 3B
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,plain,castellated,hexagon, cataloged under National Stock Number 5310-00-176-8196, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Safran Power Usa Llc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-176-8196
Primary Part Number206-3
Item NameNut,plain,castellated,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerSafran Power Usa Llc
StatusACTIVE
Nominal Thread Size0.250 INCHES IN
Nut StyleCASTELLATED, HEXAGON
Thread Quantity Per Inch28
Bearing Surface TypeWASHER FACED
Thread SeriesUNF
MaterialSTEEL OVERALL
Thread Class3B
Countersink Angle110.0 DEGREES NOMINAL NUT
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Nut Height0.281 INCHES NOMINAL IN
Width Across Flats0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
Surface TreatmentCADMIUM OVERALL
Thread DirectionRIGHT-HAND
Hardness Rating68.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6680-01-084-883539750 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
2510-01-253-86473648C004 INTERCHANGEABLE
Bracket,engine Mount
Perkins Engines Inc
2640-01-528-269039750 INTERCHANGEABLE
Envelop,outside,tire
Myers Tire Supply Distribution Inc Div Akron Branch
Cross-Reference Index
Part NumberManufacturer
206-3 Safran Power Usa Llc (USA)
39750 Mission Systems Davenport Inc. (USA)
AN355-4 Aeronautical Standards Group Dept of Navy and Air Force (USA)
206-3 Lucas Aerospace Power Equipment Corporation (USA)
39750 Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems (USA)
Related Parts
6680-01-084-8835INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
39750
2510-01-253-8647INTERCHANGEABLE
BRACKET,ENGINE MOUNT
3648C004
2640-01-528-2690INTERCHANGEABLE
ENVELOP,OUTSIDE,TIRE
39750

Frequently Asked Questions

What is NSN 5310-00-176-8196?

NSN 5310-00-176-8196 is a Nut,plain,castellated,hexagon, manufactured by Safran Power Usa Llc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-176-8196?

NSN 5310-00-176-8196 has 5 cross-referenced part numbers: 206-3 (Safran Power Usa Llc), 39750 (Mission Systems Davenport Inc.), AN355-4 (Aeronautical Standards Group Dept of Navy and Air Force), 206-3 (Lucas Aerospace Power Equipment Corporation), 39750 (Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems).

What NSN replaces 5310-00-176-8196?

There are 3 known substitutes for 5310-00-176-8196: 6680-01-084-8835, 2510-01-253-8647, 2640-01-528-2690. Verify interchangeability with system specifications before substitution.

What are the specifications of 206-3?

Key specifications for 206-3: Nominal Thread Size: 0.250 INCHES IN; Nut Style: CASTELLATED, HEXAGON; Thread Quantity Per Inch: 28; Bearing Surface Type: WASHER FACED. 14 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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