PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

16405Nut,plain,castellated,hexagon

Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. · NSN 5310-00-306-6573 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-306-6573 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-306-6573. Primary manufacturer part number: 16405.
Features
  • Nut,plain,castellated,hexagon — FSC 5310
  • Thread Series: UNEF
  • Bearing Surface Type: WASHER FACED
  • Nut Style: CASTELLATED, HEXAGON
  • Nut Height: 0.312 INCHES NOMINAL IN
  • Nominal Thread Size: 0.688 INCHES IN
  • Thread Quantity Per Inch: 24
  • Material Document and Classification: AMS 4120 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4152 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Aluminum Alloy 2024 Overall construction
General Description

The Nut,plain,castellated,hexagon, cataloged under National Stock Number 5310-00-306-6573, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 12 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-306-6573
Primary Part Number16405
Item NameNut,plain,castellated,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerPratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
StatusACTIVE
Thread SeriesUNEF
Bearing Surface TypeWASHER FACED
Nut StyleCASTELLATED, HEXAGON
Nut Height0.312 INCHES NOMINAL IN
Nominal Thread Size0.688 INCHES IN
Thread Quantity Per Inch24
Material Document and ClassificationAMS 4120 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4152 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Width Across Flats0.938 INCHES NOMINAL IN
Surface TreatmentANODIZE OVERALL
Thread DirectionRIGHT-HAND
Thread Class3B
MaterialALUMINUM ALLOY 2024 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
6625-00-578-5688 INTERCHANGEABLE
Meter,arbitrary Scale
5930-00-669-820016405 INTERCHANGEABLE
Yoke,electrical Switch
Prestolite Electric Inc
6230-00-926-7728 INTERCHANGEABLE
Light,floor
5305-00-941-6402MS35275-206 INTERCHANGEABLE
Screw,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
4520-01-199-3188 INTERCHANGEABLE
Heating Element,electrical,nonim
3040-01-219-55623A4545 INTERCHANGEABLE
Shaft,shouldered
Link-Belt Cranes, L.p., Lllp
5930-01-464-20951640-5 INTERCHANGEABLE
Switch,pressure
Dwyer Instruments Inc
6515-01-589-5172212.205 INTERCHANGEABLE
Screw,bone
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
7025-01-624-965616405 INTERCHANGEABLE
Interface Unit,data Transfer
Extreme Networks, Inc
Cross-Reference Index
Part NumberManufacturer
16405 PRIMARY Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
16405 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
6625-00-578-5688INTERCHANGEABLE
METER,ARBITRARY SCALE
5930-00-669-8200INTERCHANGEABLE
YOKE,ELECTRICAL SWITCH
16405
6230-00-926-7728INTERCHANGEABLE
LIGHT,FLOOR
5305-00-941-6402INTERCHANGEABLE
SCREW,MACHINE
MS35275-206
4520-01-199-3188INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
3040-01-219-5562INTERCHANGEABLE
SHAFT,SHOULDERED
3A4545
5930-01-464-2095INTERCHANGEABLE
SWITCH,PRESSURE
1640-5
6515-01-589-5172INTERCHANGEABLE
SCREW,BONE
212.205
7025-01-624-9656INTERCHANGEABLE
INTERFACE UNIT,DATA TRANSFER
16405

Frequently Asked Questions

What is NSN 5310-00-306-6573?

NSN 5310-00-306-6573 is a Nut,plain,castellated,hexagon, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-306-6573?

NSN 5310-00-306-6573 has 2 cross-referenced part numbers: 16405 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.), 16405 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).

What NSN replaces 5310-00-306-6573?

There are 9 known substitutes for 5310-00-306-6573: 6625-00-578-5688, 5930-00-669-8200, 6230-00-926-7728 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 16405?

Key specifications for 16405: Thread Series: UNEF; Bearing Surface Type: WASHER FACED; Special Features: ID OF BEARING SURFACE CHAMFERED 30 DEG BY 0.844 IN DIA IN; Nut Style: CASTELLATED, HEXAGON. 13 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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