PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4491Screw,machine

Prestolite Electric Inc · NSN 5305-01-155-9770 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-155-9770 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-155-9770. Primary manufacturer part number: 4491.
Features
  • Screw,machine — FSC 5305
  • Thread Series Designator: UNF
  • Fastener Length: 0.750 INCHES NOMINAL IN
  • Head Style: ROUND
  • Thread Quantity Per Inch: 32
  • Nominal Thread Diameter: 0.190 INCHES IN
  • 3 verified cross-references
  • Primary manufacturer: Prestolite Electric Inc
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-01-155-9770, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Prestolite Electric Inc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN5305-01-155-9770
Primary Part Number4491
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerPrestolite Electric Inc
StatusACTIVE
Thread Series DesignatorUNF
Fastener Length0.750 INCHES NOMINAL IN
Head StyleROUND
Thread Quantity Per Inch32
Nominal Thread Diameter0.190 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
8455-00-257-4371 INTERCHANGEABLE
Bar,service Ribbon
8455-00-257-4372 INTERCHANGEABLE
Bar,service Ribbon
2040-00-391-4459 INTERCHANGEABLE
Lever
5330-00-411-9094 INTERCHANGEABLE
Retainer,packing
5805-01-175-2447247-12 INTERCHANGEABLE
Telephone,lear
Hose-Mccann Telephone Co, Inc
6230-01-396-8900ACR-L-32 INTERCHANGEABLE
Light,marker,field,portable
Acr Electronics, Inc. Dba Acr Electronics Inc
3431-01-442-6783 INTERCHANGEABLE
Nozzle,welding
6515-01-542-34914491 INTERCHANGEABLE
Brace,leg
Mueller Sports Medicine, Inc
6810-01-583-1070 INTERCHANGEABLE
Carbonic Dihydrazid
Cross-Reference Index
Part NumberManufacturer
5550509 Am General Llc (USA)
4491 Prestolite Electric Inc (USA)
4491 PRIMARY Prestolite Electric Inc (USA)
Related Parts
8455-00-257-4371INTERCHANGEABLE
BAR,SERVICE RIBBON
8455-00-257-4372INTERCHANGEABLE
BAR,SERVICE RIBBON
2040-00-391-4459INTERCHANGEABLE
LEVER
5330-00-411-9094INTERCHANGEABLE
RETAINER,PACKING
5805-01-175-2447INTERCHANGEABLE
TELEPHONE,LEAR
247-12
6230-01-396-8900INTERCHANGEABLE
LIGHT,MARKER,FIELD,PORTABLE
ACR-L-32
3431-01-442-6783INTERCHANGEABLE
NOZZLE,WELDING
6515-01-542-3491INTERCHANGEABLE
BRACE,LEG
4491
6810-01-583-1070INTERCHANGEABLE
CARBONIC DIHYDRAZID

Frequently Asked Questions

What is NSN 5305-01-155-9770?

NSN 5305-01-155-9770 is a Screw,machine, manufactured by Prestolite Electric Inc, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-155-9770?

NSN 5305-01-155-9770 has 3 cross-referenced part numbers: 5550509 (Am General Llc), 4491 (Prestolite Electric Inc), 4491 (Prestolite Electric Inc).

What NSN replaces 5305-01-155-9770?

There are 9 known substitutes for 5305-01-155-9770: 8455-00-257-4371, 8455-00-257-4372, 2040-00-391-4459 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4491?

Key specifications for 4491: Thread Series Designator: UNF; Fastener Length: 0.750 INCHES NOMINAL IN; Head Style: ROUND; Thread Quantity Per Inch: 32. 5 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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