PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-S-1222Bolt,machine

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5306-00-270-9422 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-270-9422 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-270-9422. Primary manufacturer part number: MIL-S-1222.
Features
  • Bolt,machine — FSC 5306
  • Thread Class: 2A A
  • Grip Length: 3.781 INCHES NOMINAL IN
  • Thread Length: 1.188 INCHES MINIMUM IN
  • Fastener Length: 4.969 INCHES MINIMUM AND 5.000 INCHES MAXIMUM IN
  • Features Provided: FINISHED HEAD
  • Thread Direction: RIGHT-HAND
  • Head Style: HEXAGON
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 5306-00-270-9422, 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 17 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
NSN5306-00-270-9422
Primary Part NumberMIL-S-1222
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
Thread Class2A A
Grip Length3.781 INCHES NOMINAL IN
Thread Length1.188 INCHES MINIMUM IN
Fastener Length4.969 INCHES MINIMUM AND 5.000 INCHES MAXIMUM IN
Features ProvidedFINISHED HEAD
Thread DirectionRIGHT-HAND
Head StyleHEXAGON
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Width Between Flats0.544 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Head Height0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
Minimum Tensile Strength120000 POUNDS PER SQUARE INCH LBS
Nominal Thread Diameter0.375 INCHES IN
Hardness Rating23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Thread Quantity Per Inch16
Material Document and ClassificationSAE GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Nondefinitive Spec/std Data2 TYPE AND C5 STYLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
Bolt,machine
Bolt,machine
5306-00-018-6649186649 SUCCESSOR
Bolt,machine
Rolls-Royce Solutions America Inc
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
MIL-S-1222 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5306-00-010-8587SUCCESSOR
BOLT,MACHINE
5306-00-018-0084SUCCESSOR
BOLT,MACHINE
5306-00-018-6649SUCCESSOR
BOLT,MACHINE
186649
5306-00-174-9459SUCCESSOR
BOLT,MACHINE
5306-00-174-9461SUCCESSOR
BOLT,MACHINE
5306-00-174-9463SUCCESSOR
BOLT,MACHINE
5306-00-174-9465SUCCESSOR
BOLT,MACHINE
5306-00-174-9466SUCCESSOR
BOLT,MACHINE
5306-00-174-9468SUCCESSOR
BOLT,MACHINE
5306-00-174-9472SUCCESSOR
BOLT,MACHINE
5306-00-174-9475SUCCESSOR
BOLT,MACHINE
5306-00-174-9477SUCCESSOR
BOLT,MACHINE
1/2-13UNC-2AX5 1/2LG

Frequently Asked Questions

What is NSN 5306-00-270-9422?

NSN 5306-00-270-9422 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 5306-00-270-9422?

NSN 5306-00-270-9422 has 1 cross-referenced part number: MIL-S-1222 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5306-00-270-9422?

There are 12 known substitutes for 5306-00-270-9422: 5306-00-010-8587, 5306-00-018-0084, 5306-00-018-6649 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-S-1222?

Key specifications for MIL-S-1222: Thread Class: 2A A; Grip Length: 3.781 INCHES NOMINAL IN; Thread Length: 1.188 INCHES MINIMUM IN; Fastener Length: 4.969 INCHES MINIMUM AND 5.000 INCHES MAXIMUM IN. 17 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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