PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

73439Screw,cap,socket Head

Fastenal Company Div Nfny · NSN 5305-01-647-2562 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-647-2562 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-647-2562. Primary manufacturer part number: 73439.
Features
  • Screw,cap,socket Head — FSC 5305
  • Material: STEEL PROPERTY CLASS 18.8 OVERALL
  • Thread Direction: RIGHT-HAND
  • Head Style: FLAT FILLISTER
  • Width Across Flats: 0.1562 INCHES MINIMUM AND 0.1587 INCHES MAXIMUM IN
  • Nominal Thread Diameter: 0.1900 INCHES IN
  • Head Height: 0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
  • Fastener Length: 0.75 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Property Class 18.8 Overall construction
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-647-2562, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fastenal Company Div Nfny. Government technical data includes 13 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-647-2562
Primary Part Number73439
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerFastenal Company Div Nfny
StatusACTIVE
MaterialSTEEL PROPERTY CLASS 18.8 OVERALL
Thread DirectionRIGHT-HAND
Head StyleFLAT FILLISTER
Width Across Flats0.1562 INCHES MINIMUM AND 0.1587 INCHES MAXIMUM IN
Nominal Thread Diameter0.1900 INCHES IN
Head Height0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
Fastener Length0.75 INCHES NOMINAL IN
Head Diameter0.298 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
Internal Drive StyleHEXAGON
Thread Class3A A
Thread Quantity Per Inch24
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Material Document and ClassificationASTM F837 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5950-00-153-574310098 INTERCHANGEABLE
Transformer,audio Frequency
Cae Usa Inc.
5330-00-224-934673439 INTERCHANGEABLE
Seal,plain Encased
Prestolite Electric Inc
Cross-Reference Index
Part NumberManufacturer
73439 PRIMARY Fastenal Company Div Nfny (USA)
Related Parts
5950-00-153-5743INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
10098
5330-00-224-9346INTERCHANGEABLE
SEAL,PLAIN ENCASED
73439

Frequently Asked Questions

What is NSN 5305-01-647-2562?

NSN 5305-01-647-2562 is a Screw,cap,socket Head, manufactured by Fastenal Company Div Nfny, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-647-2562?

NSN 5305-01-647-2562 has 1 cross-referenced part number: 73439 (Fastenal Company Div Nfny).

What NSN replaces 5305-01-647-2562?

There are 2 known substitutes for 5305-01-647-2562: 5950-00-153-5743, 5330-00-224-9346. Verify interchangeability with system specifications before substitution.

What are the specifications of 73439?

Key specifications for 73439: Material: STEEL PROPERTY CLASS 18.8 OVERALL; Thread Direction: RIGHT-HAND; Head Style: FLAT FILLISTER; Width Across Flats: 0.1562 INCHES MINIMUM AND 0.1587 INCHES MAXIMUM IN. 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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