PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

431291Screw,machine

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5305-00-847-0050 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-847-0050 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-847-0050. Primary manufacturer part number: 431291.
Features
  • Screw,machine — FSC 5305
  • Head Style: FILLISTER
  • Internal Drive Style: SLOT
  • Thread Length: 0.562 INCHES MINIMUM IN
  • Thread Class: 3A A
  • Screw Material: STEEL
  • Thread Quantity Per Inch: 28
  • Nominal Thread Diameter: 0.250 INCHES IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-847-0050, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. 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: Active.

Technical Specifications
ParameterValue
NSN5305-00-847-0050
Primary Part Number431291
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
Head StyleFILLISTER
Internal Drive StyleSLOT
Thread Length0.562 INCHES MINIMUM IN
Thread Class3A A
Screw MaterialSTEEL
Thread Quantity Per Inch28
Nominal Thread Diameter0.250 INCHES IN
Thread DirectionRIGHT-HAND
Head Diameter0.375 INCHES NOMINAL IN
Head Height0.198 INCHES NOMINAL IN
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
Screw Material Document and ClassificationAMS6322 ASSN STD SINGLE MATERIAL RESPONSE
Thread Series DesignatorUNF
Fastener Length1.438 INCHES NOMINAL IN
Screw Surface TreatmentCADMIUM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5330-00-291-1651374B224 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
3040-01-329-095143-1291 INTERCHANGEABLE
Shaft,shouldered
General Electric Company Dba Ge Aerospace
Cross-Reference Index
Part NumberManufacturer
431291 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
5330-00-291-1651INTERCHANGEABLE
SEAL,PLAIN ENCASED
374B224
3040-01-329-0951INTERCHANGEABLE
SHAFT,SHOULDERED
43-1291

Frequently Asked Questions

What is NSN 5305-00-847-0050?

NSN 5305-00-847-0050 is a Screw,machine, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-847-0050?

NSN 5305-00-847-0050 has 1 cross-referenced part number: 431291 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).

What NSN replaces 5305-00-847-0050?

There are 2 known substitutes for 5305-00-847-0050: 5330-00-291-1651, 3040-01-329-0951. Verify interchangeability with system specifications before substitution.

What are the specifications of 431291?

Key specifications for 431291: Head Style: FILLISTER; Internal Drive Style: SLOT; Thread Length: 0.562 INCHES MINIMUM IN; Thread Class: 3A A. 15 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com