PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

252774Bolt,machine

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5306-00-292-4393 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-292-4393 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-292-4393. Primary manufacturer part number: 252774.
Features
  • Bolt,machine — FSC 5306
  • Features Provided: FINISHED HEAD
  • Thread Series Designator: UNF
  • Nominal Thread Diameter: 0.250 INCHES IN
  • Width Between Flats: 0.431 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
  • Thread Direction: RIGHT-HAND
  • Thread Class: 1A A
  • Head Height: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Iron Alloy 660 Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-292-4393, is classified within Federal Supply Class 5306 (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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-292-4393
Primary Part Number252774
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
Features ProvidedFINISHED HEAD
Thread Series DesignatorUNF
Nominal Thread Diameter0.250 INCHES IN
Width Between Flats0.431 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Thread Class1A A
Head Height0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
Fastener Length0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
Shank Unthreaded Hole Diameter0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN
MaterialIRON ALLOY 660 OVERALL
Thread Length0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
Head StyleHEXAGON
Material Document and ClassificationAMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Thread Quantity Per Inch28
Distance From Head Largest Bearing Surface to Shank Hole Center0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM FIRST HOLE IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3110-00-156-3547 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
252774 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
3110-00-156-3547INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 5306-00-292-4393?

NSN 5306-00-292-4393 is a Bolt,machine, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-292-4393?

NSN 5306-00-292-4393 has 1 cross-referenced part number: 252774 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).

What NSN replaces 5306-00-292-4393?

There is 1 known substitute for 5306-00-292-4393: 3110-00-156-3547. Verify interchangeability with system specifications before substitution.

What are the specifications of 252774?

Key specifications for 252774: Features Provided: FINISHED HEAD; Thread Series Designator: UNF; Nominal Thread Diameter: 0.250 INCHES IN; Width Between Flats: 0.431 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN. 15 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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