PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

X5224Bolt,key Head

Pettibone Llc · NSN 5306-00-377-6777 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-377-6777 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-377-6777. Primary manufacturer part number: X5224.
Features
  • Bolt,key Head — FSC 5306
  • Thread Length: 2.500 INCHES MINIMUM IN
  • Thread Class: 2A A
  • Nominal Thread Diameter: 1.250 INCHES IN
  • Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Thread Quantity Per Inch: 7
  • Head Style: FLAT COUNTERSUNK REVERSE KEYED
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 4140 Overall construction
General Description

The Bolt,key Head, cataloged under National Stock Number 5306-00-377-6777, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Pettibone Llc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-377-6777
Primary Part NumberX5224
Item NameBolt,key Head
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerPettibone Llc
StatusACTIVE
Thread Length2.500 INCHES MINIMUM IN
Thread Class2A A
Nominal Thread Diameter1.250 INCHES IN
Hardness Rating38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Quantity Per Inch7
Head StyleFLAT COUNTERSUNK REVERSE KEYED
Key Length0.469 INCHES NOMINAL IN
Head Diameter2.156 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Countersink Angle78.0 DEGREES NOMINAL
MaterialSTEEL COMP 4140 OVERALL
Fastener Length6.500 INCHES NOMINAL IN
Head Height0.656 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5945-00-012-860515QA5D INTERCHANGEABLE
Relay,electromagnetic
Se Relays Llc (magnecraft) Div Se Relays Llc (magnecraft)
5305-00-013-8244 INTERCHANGEABLE
Screw,cap,socket Head
5930-00-455-2748116B3244 INTERCHANGEABLE
Switch,toggle
U S Army Tank Automotive Command Amsta-Im-Mm
5930-00-564-8851 INTERCHANGEABLE
Switch,rotary
4730-00-914-28805056 INTERCHANGEABLE
Clamp,hose
Epicor Industries Inc Ideal Div
4920-01-019-8116PWA52940 INTERCHANGEABLE
Fixture,engine Maintenance,aircr
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
7910-01-223-5653 INTERCHANGEABLE
Filter Cartridge,vacuum Cleaner
5999-01-250-42195224 INTERCHANGEABLE
Clip,electrical
Fluke Electronics Corp
5120-01-399-9546 INTERCHANGEABLE
Socket,socket Wrench
5970-01-508-5882871076 INTERCHANGEABLE
Insulator,feedthru
Datron World Communications, Inc.
Cross-Reference Index
Part NumberManufacturer
X5224 Pettibone Llc (USA)
5224 Pettibone Llc (USA)
Related Parts
5945-00-012-8605INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
15QA5D
5305-00-013-8244INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5930-00-455-2748INTERCHANGEABLE
SWITCH,TOGGLE
116B3244
5930-00-564-8851INTERCHANGEABLE
SWITCH,ROTARY
4730-00-914-2880INTERCHANGEABLE
CLAMP,HOSE
5056
4920-01-019-8116INTERCHANGEABLE
FIXTURE,ENGINE MAINTENANCE,AIRCR
PWA52940
7910-01-223-5653INTERCHANGEABLE
FILTER CARTRIDGE,VACUUM CLEANER
5999-01-250-4219INTERCHANGEABLE
CLIP,ELECTRICAL
5224
5120-01-399-9546INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5970-01-508-5882INTERCHANGEABLE
INSULATOR,FEEDTHRU
871076
6680-01-511-7083INTERCHANGEABLE
VENT OIL LEVEL GAGE
5305-01-601-4672INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD

Frequently Asked Questions

What is NSN 5306-00-377-6777?

NSN 5306-00-377-6777 is a Bolt,key Head, manufactured by Pettibone Llc, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-377-6777?

NSN 5306-00-377-6777 has 2 cross-referenced part numbers: X5224 (Pettibone Llc), 5224 (Pettibone Llc).

What NSN replaces 5306-00-377-6777?

There are 12 known substitutes for 5306-00-377-6777: 5945-00-012-8605, 5305-00-013-8244, 5930-00-455-2748 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of X5224?

Key specifications for X5224: Thread Length: 2.500 INCHES MINIMUM IN; Thread Class: 2A A; Nominal Thread Diameter: 1.250 INCHES IN; Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL. 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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