PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

22278Screw,cap,socket Head

Smiths Aerospace, Inc., Electronic Systems-Grand Rapids · NSN 5305-01-100-4764 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-100-4764 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-100-4764. Primary manufacturer part number: 22278.
Features
  • Screw,cap,socket Head — FSC 5305
  • Thread Direction: RIGHT-HAND
  • Internal Drive Style: HEXAGON
  • Width Across Flats: 0.062 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Fastener Length: 0.250 INCHES MINIMUM IN
  • Thread Quantity Per Inch: 64
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-100-4764, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Smiths Aerospace, Inc., Electronic Systems-Grand Rapids. Government technical data includes 10 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-100-4764
Primary Part Number22278
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerSmiths Aerospace, Inc., Electronic Systems-Grand Rapids
StatusACTIVE
Thread DirectionRIGHT-HAND
Internal Drive StyleHEXAGON
Width Across Flats0.062 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Fastener Length0.250 INCHES MINIMUM IN
Thread Quantity Per Inch64
Head Diameter0.118 INCHES MAXIMUM IN
Nominal Thread Diameter0.073 INCHES IN
Thread Class2A A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3455-01-046-0356 INTERCHANGEABLE
File,rotary
Cross-Reference Index
Part NumberManufacturer
22278 PRIMARY Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
Related Parts
3455-01-046-0356INTERCHANGEABLE
FILE,ROTARY

Frequently Asked Questions

What is NSN 5305-01-100-4764?

NSN 5305-01-100-4764 is a Screw,cap,socket Head, manufactured by Smiths Aerospace, Inc., Electronic Systems-Grand Rapids, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-100-4764?

NSN 5305-01-100-4764 has 1 cross-referenced part number: 22278 (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids).

What NSN replaces 5305-01-100-4764?

There is 1 known substitute for 5305-01-100-4764: 3455-01-046-0356. Verify interchangeability with system specifications before substitution.

What are the specifications of 22278?

Key specifications for 22278: Thread Direction: RIGHT-HAND; Internal Drive Style: HEXAGON; Width Across Flats: 0.062 INCHES NOMINAL IN; Material: STEEL OVERALL. 10 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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