PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-S-1222HBolt,machine

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5306-00-263-7479 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-263-7479 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-263-7479. Primary manufacturer part number: MIL-S-1222H.
Features
  • Bolt,machine — FSC 5306
  • Minimum Tensile Strength: 55000 POUNDS PER SQUARE INCH LBS
  • Fastener Length: 3.875 INCHES MINIMUM AND 4.000 INCHES MAXIMUM IN
  • Nondefinitive Spec/std Data: 2 TYPE AND 10P STYLE AND 5 GRADE
  • Departure From Cited Designator: AS MODIFIED BY THREAD LG
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Head Style: HEXAGON
  • Material: STEEL OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-263-7479, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 18 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-263-7479
Primary Part NumberMIL-S-1222H
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Minimum Tensile Strength55000 POUNDS PER SQUARE INCH LBS
Fastener Length3.875 INCHES MINIMUM AND 4.000 INCHES MAXIMUM IN
Nondefinitive Spec/std Data2 TYPE AND 10P STYLE AND 5 GRADE
Departure From Cited DesignatorAS MODIFIED BY THREAD LG
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Head StyleHEXAGON
MaterialSTEEL OVERALL
Hardness Rating95.0 ROCKWELL B MAXIMUM OVERALL
Material Document and ClassificationSAE GR 1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Nominal Thread Diameter0.750 INCHES IN
Thread Quantity Per Inch10
Features ProvidedFINISHED HEAD
Head Height0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN
Grip Length2.500 INCHES NOMINAL IN
Width Between Flats1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Thread Length1.500 INCHES MINIMUM IN
Thread Class2A A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
Bolt,machine
Bolt,machine
Bolt,machine
5306-01-482-4723803-1385637-05X-23 SUCCESSOR
Bolt,machine
Naval Ship Systems Command
Bolt,machine
5305-00-226-9220 INTERCHANGEABLE
Screw,cap,hexagon Head
5306-00-227-0932 INTERCHANGEABLE
Bolt,machine
5307-00-248-7987 INTERCHANGEABLE
Stud,plain
5305-00-266-4105 INTERCHANGEABLE
Screw,cap,hexagon Head
5306-00-273-6098 INTERCHANGEABLE
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
MIL-S-1222H Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5306-00-270-8290SUCCESSOR
BOLT,MACHINE
5306-00-270-9456SUCCESSOR
BOLT,MACHINE
5306-01-482-4720SUCCESSOR
BOLT,MACHINE
5306-01-482-4723SUCCESSOR
BOLT,MACHINE
803-1385637-05X-23
5306-01-482-4724SUCCESSOR
BOLT,MACHINE
5305-00-226-9220INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5306-00-227-0932INTERCHANGEABLE
BOLT,MACHINE
5307-00-248-7987INTERCHANGEABLE
STUD,PLAIN
5305-00-266-4105INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5306-00-273-6098INTERCHANGEABLE
BOLT,MACHINE
5306-00-285-3532INTERCHANGEABLE
BOLT,MACHINE
X04
5306-00-338-3853INTERCHANGEABLE
BOLT,MACHINE
K6643028PC217

Frequently Asked Questions

What is NSN 5306-00-263-7479?

NSN 5306-00-263-7479 is a Bolt,machine, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-263-7479?

NSN 5306-00-263-7479 has 1 cross-referenced part number: MIL-S-1222H (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5306-00-263-7479?

There are 12 known substitutes for 5306-00-263-7479: 5306-00-270-8290, 5306-00-270-9456, 5306-01-482-4720 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-S-1222H?

Key specifications for MIL-S-1222H: Minimum Tensile Strength: 55000 POUNDS PER SQUARE INCH LBS; Fastener Length: 3.875 INCHES MINIMUM AND 4.000 INCHES MAXIMUM IN; Special Features: FURNISHED WITH 1 PLAIN HEX NUT AND 1 WASHER FLAT; Nondefinitive Spec/std Data: 2 TYPE AND 10P STYLE AND 5 GRADE. 19 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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