PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4657Screw,machine

Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. · NSN 5305-00-147-2646 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-147-2646 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-147-2646. Primary manufacturer part number: 4657.
Features
  • Screw,machine — FSC 5305
  • Head Hole Configuration Style: ROUND
  • Head Height: 0.219 INCHES NOMINAL IN
  • Head Diameter: 0.312 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 32
  • Head Style: FILLISTER
  • Screw Material: STEEL COMP 8735 OR STEEL COMP 4640 OR STEEL COMP 6150
  • Thread Class: 3A A
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-147-2646, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 15 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: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-147-2646
Primary Part Number4657
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerPratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
StatusCANCELLED
Head Hole Configuration StyleROUND
Head Height0.219 INCHES NOMINAL IN
Head Diameter0.312 INCHES NOMINAL IN
Thread Quantity Per Inch32
Head StyleFILLISTER
Screw MaterialSTEEL COMP 8735 OR STEEL COMP 4640 OR STEEL COMP 6150
Thread Class3A A
Thread Series DesignatorUNF
Fastener Length1.250 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Internal Drive StyleCROSS RECESS TYPE 1
Thread Length1.000 INCHES MINIMUM IN
Hole Quantity2
Nominal Thread Diameter0.190 INCHES IN
Screw Surface TreatmentCADMIUM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
8115-00-418-46574657 INTERCHANGEABLE
Box,shipping
Loye Keesee Dba Keesee Box Company Div Government Resource Pkg Prod
5950-01-381-81534657 INTERCHANGEABLE
Coil,radio Frequency
Blonder Tongue Laboratories, Inc.
Cross-Reference Index
Part NumberManufacturer
4657 PRIMARY Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
Related Parts
8115-00-418-4657INTERCHANGEABLE
BOX,SHIPPING
4657
5950-01-381-8153INTERCHANGEABLE
COIL,RADIO FREQUENCY
4657

Frequently Asked Questions

What is NSN 5305-00-147-2646?

NSN 5305-00-147-2646 is a Screw,machine, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-147-2646?

NSN 5305-00-147-2646 has 1 cross-referenced part number: 4657 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).

What NSN replaces 5305-00-147-2646?

There are 2 known substitutes for 5305-00-147-2646: 8115-00-418-4657, 5950-01-381-8153. Verify interchangeability with system specifications before substitution.

What are the specifications of 4657?

Key specifications for 4657: Head Hole Configuration Style: ROUND; Head Height: 0.219 INCHES NOMINAL IN; Head Diameter: 0.312 INCHES NOMINAL IN; Thread Quantity Per Inch: 32. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-147-2646 still in active supply?

NSN 5305-00-147-2646 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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