PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

280451PC28Screw,machine

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5305-00-271-2065 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-271-2065 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-271-2065. Primary manufacturer part number: 280451PC28.
Features
  • Screw,machine — FSC 5305
  • Width Between Flats: 0.491 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
  • Nominal Thread Diameter: 0.312 INCHES IN
  • Thread Class: 2A A
  • Thread Length: 0.875 INCHES MAXIMUM IN
  • Screw Material Document and Classification: QQ-S-763,COND A FED SPEC ALL MATERIAL RESPONSES
  • Head Style: HEXAGON
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-271-2065, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 15 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-271-2065
Primary Part Number280451PC28
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Width Between Flats0.491 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
Nominal Thread Diameter0.312 INCHES IN
Thread Class2A A
Thread Length0.875 INCHES MAXIMUM IN
Screw Material Document and ClassificationQQ-S-763,COND A FED SPEC ALL MATERIAL RESPONSES
Head StyleHEXAGON
Thread DirectionRIGHT-HAND
Internal Drive StyleSLOT
Screw Surface TreatmentPASSIVATE
Thread Quantity Per Inch18
Screw MaterialSTEEL COMP 303 OR STEEL COMP 305
Head Height0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
Nondefinitive Spec/std DataI TYPE AND 10S STYLE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Fastener Length0.875 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5306-00-206-19141-33ALT1PC6 INTERCHANGEABLE
Bolt,machine
The Dewey Electronics Corporation Div Pitometer Log Division
5305-00-271-2067 INTERCHANGEABLE
Screw,machine
5305-00-271-2068T304 INTERCHANGEABLE
Screw,machine
All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners
5305-00-271-2080 INTERCHANGEABLE
Screw,machine
5305-00-272-1499183300PC21 INTERCHANGEABLE
Screw,machine
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5305-00-275-9933 INTERCHANGEABLE
Screw,machine
Cross-Reference Index
Part NumberManufacturer
FFS85TYPE1STYLE10S Federal Specifications Promulgated by General Services Administration Washington DC (USA)
280451PC28 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5306-00-206-1914INTERCHANGEABLE
BOLT,MACHINE
1-33ALT1PC6
5305-00-271-2067INTERCHANGEABLE
SCREW,MACHINE
5305-00-271-2068INTERCHANGEABLE
SCREW,MACHINE
T304
5305-00-271-2080INTERCHANGEABLE
SCREW,MACHINE
5305-00-272-1499INTERCHANGEABLE
SCREW,MACHINE
183300PC21
5305-00-275-9933INTERCHANGEABLE
SCREW,MACHINE

Frequently Asked Questions

What is NSN 5305-00-271-2065?

NSN 5305-00-271-2065 is a Screw,machine, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-271-2065?

NSN 5305-00-271-2065 has 2 cross-referenced part numbers: FFS85TYPE1STYLE10S (Federal Specifications Promulgated by General Services Administration Washington DC), 280451PC28 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 5305-00-271-2065?

There are 6 known substitutes for 5305-00-271-2065: 5306-00-206-1914, 5305-00-271-2067, 5305-00-271-2068 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 280451PC28?

Key specifications for 280451PC28: Width Between Flats: 0.491 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.312 INCHES IN; Thread Class: 2A A; Thread Length: 0.875 INCHES MAXIMUM IN. 15 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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