PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-DTL-122JBolt,machine

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5306-00-270-9424 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-270-9424 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-270-9424. Primary manufacturer part number: MIL-DTL-122J.
Features
  • Bolt,machine — FSC 5306
  • Head Height: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
  • Minimum Tensile Strength: 120000 POUNDS PER SQUARE INCH LBS
  • Hardness Rating: 23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
  • Nondefinitive Spec/std Data: 1 TYPE AND 5 GRADE
  • Head Style: HEXAGON
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Thread Quantity Per Inch: 16
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 5306-00-270-9424, 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 3 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
NSN5306-00-270-9424
Primary Part NumberMIL-DTL-122J
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
Head Height0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
Minimum Tensile Strength120000 POUNDS PER SQUARE INCH LBS
Hardness Rating23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Nondefinitive Spec/std Data1 TYPE AND 5 GRADE
Head StyleHEXAGON
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Quantity Per Inch16
Fastener Length5.979 INCHES MINIMUM AND 6.000 INCHES MAXIMUM IN
Nominal Thread Diameter0.375 INCHES IN
Width Between Flats0.544 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
Features ProvidedFINISHED HEAD
MaterialSTEEL OVERALL
Material Document and ClassificationSAE GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Thread DirectionRIGHT-HAND
Thread Class2A A
Thread Length1.000 INCHES MINIMUM IN
Grip Length4.767 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor5306-00-043-4568 (H2212PC9)
HAZMATNo
Verified Substitutes 12
Bolt,square Neck
5306-00-226-4835MS90725-42 SUCCESSOR
Bolt,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5306-00-226-4839AEB02C312C50WA6AA1 SUCCESSOR
Bolt,machine
The American Society of Mechanical Engineers
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
5306-00-404-1385MS35751-54 SUCCESSOR
Bolt,square Neck
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5306-00-550-5030MS35355-145 SUCCESSOR
Bolt,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5306-00-721-588769470 SUCCESSOR
Bolt,machine
Cummins Inc.
Cross-Reference Index
Part NumberManufacturer
MIL-DTL-122J Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M1222RN6C296GFNN Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILB857 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
SUCCESSOR 5306-00-043-4568 Bolt,machine · H2212PC9
5306-00-089-1425SUCCESSOR
BOLT,SQUARE NECK
5306-00-226-4835SUCCESSOR
BOLT,MACHINE
MS90725-42
5306-00-226-4839SUCCESSOR
BOLT,MACHINE
AEB02C312C50WA6AA1
5306-00-227-0610SUCCESSOR
BOLT,MACHINE
5306-00-299-2339SUCCESSOR
BOLT,MACHINE
5306-00-299-2380SUCCESSOR
BOLT,MACHINE
5306-00-379-4569SUCCESSOR
BOLT,MACHINE
5306-00-404-1385SUCCESSOR
BOLT,SQUARE NECK
MS35751-54
5306-00-550-5030SUCCESSOR
BOLT,MACHINE
MS35355-145
5306-00-721-5887SUCCESSOR
BOLT,MACHINE
69470
5306-00-054-8282SUCCESSOR
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-270-9424?

NSN 5306-00-270-9424 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 5306-00-270-9424?

NSN 5306-00-270-9424 has 3 cross-referenced part numbers: MIL-DTL-122J (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M1222RN6C296GFNN (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILB857 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5306-00-270-9424?

There are 12 known substitutes for 5306-00-270-9424: 5306-00-089-1425, 5306-00-226-4835, 5306-00-226-4839 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-122J?

Key specifications for MIL-DTL-122J: Head Height: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN; Minimum Tensile Strength: 120000 POUNDS PER SQUARE INCH LBS; Hardness Rating: 23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL; Nondefinitive Spec/std Data: 1 TYPE AND 5 GRADE. 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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