PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

H7493901-6Setscrew

Electric Boat Corporation Div General Dynamics Electric Boat · NSN 5305-01-477-0643 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-477-0643 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-477-0643. Primary manufacturer part number: H7493901-6.
Features
  • Setscrew — FSC 5305
  • 5 verified cross-references
  • Primary manufacturer: Electric Boat Corporation Div General Dynamics Electric Boat
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Setscrew, cataloged under National Stock Number 5305-01-477-0643, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Electric Boat Corporation Div General Dynamics Electric Boat. This item has 5 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.

Catalog Facts
Item NameSetscrew
FSC / FSG5305 — No Item Name Available (FSG 53)
ManufacturersNaval Sea Systems Command (CAGE 53711); Electric Boat Corporation Div General Dynamics Electric Boat (CAGE 96169)
Technical Specifications
ParameterValue
NSN5305-01-477-0643
Primary Part NumberH7493901-6
Item NameSetscrew
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerElectric Boat Corporation Div General Dynamics Electric Boat
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5315-01-476-614436-01-7808 INTERCHANGEABLE
Pin,straight,headless
Electric Boat Corporation Div General Dynamics Electric Boat
5305-01-476-6402H7493901-9 INTERCHANGEABLE
Screw,machine
Naval Sea Systems Command
5305-01-476-6406254-7015355PN8 INTERCHANGEABLE
Screw,machine
Naval Sea Systems Command
5315-01-476-979133-18-7812B INTERCHANGEABLE
Pin,retaining
Electric Boat Corporation Div General Dynamics Electric Boat
5305-01-477-0520254-7015355PN22 INTERCHANGEABLE
Screw,machine
Naval Sea Systems Command
5306-01-477-0522254-7015355PN74 INTERCHANGEABLE
Bolt,machine
Naval Sea Systems Command
5307-01-477-0527254-7015355PN62 INTERCHANGEABLE
Stud,plain
Naval Sea Systems Command
5305-01-477-0530254-7015355PN52 INTERCHANGEABLE
Screw,shoulder
Naval Sea Systems Command
5342-01-477-76137015355PN47 INTERCHANGEABLE
Bellows,protection
Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
7015355 Naval Sea Systems Command (USA)
H7493901-6 PRIMARY Electric Boat Corporation Div General Dynamics Electric Boat (USA)
254-7015355PN6 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
H749-3901 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
254-7015355PN6 PRIMARY Naval Sea Systems Command (USA)
Related Parts
5315-01-476-6144INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
36-01-7808
5305-01-476-6402INTERCHANGEABLE
SCREW,MACHINE
H7493901-9
5305-01-476-6406INTERCHANGEABLE
SCREW,MACHINE
254-7015355PN8
5315-01-476-9791INTERCHANGEABLE
PIN,RETAINING
33-18-7812B
5305-01-477-0520INTERCHANGEABLE
SCREW,MACHINE
254-7015355PN22
5306-01-477-0522INTERCHANGEABLE
BOLT,MACHINE
254-7015355PN74
5307-01-477-0527INTERCHANGEABLE
STUD,PLAIN
254-7015355PN62
5305-01-477-0530INTERCHANGEABLE
SCREW,SHOULDER
254-7015355PN52
5342-01-477-7613INTERCHANGEABLE
BELLOWS,PROTECTION
7015355PN47

Frequently Asked Questions

What is NSN 5305-01-477-0643?

NSN 5305-01-477-0643 is a Setscrew, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-477-0643?

NSN 5305-01-477-0643 has 5 cross-referenced part numbers: 7015355 (Naval Sea Systems Command), H7493901-6 (Electric Boat Corporation Div General Dynamics Electric Boat), 254-7015355PN6 (Electric Boat Corporation Div General Dynamics Electric Boat), H749-3901 (Electric Boat Corporation Div General Dynamics Electric Boat), 254-7015355PN6 (Naval Sea Systems Command).

What NSN replaces 5305-01-477-0643?

There are 9 known substitutes for 5305-01-477-0643: 5315-01-476-6144, 5305-01-476-6402, 5305-01-476-6406 and 6 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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