PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-DTL-1222Bolt,machine

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5306-00-299-2342 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-299-2342 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-299-2342. Primary manufacturer part number: MIL-DTL-1222.
Features
  • Bolt,machine — FSC 5306
  • Width Between Flats: 1.269 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
  • Fastener Length: 3.750 INCHES NOMINAL IN
  • Head Height: 0.531 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
  • Thread Length: 2.000 INCHES MINIMUM IN
  • Thread Quantity Per Inch: 9
  • Thread Direction: RIGHT-HAND
  • Minimum Tensile Strength: 55000 POUNDS PER SQUARE INCH LBS
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 5306-00-299-2342, 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 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
NSN5306-00-299-2342
Primary Part NumberMIL-DTL-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
Width Between Flats1.269 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
Fastener Length3.750 INCHES NOMINAL IN
Head Height0.531 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
Thread Length2.000 INCHES MINIMUM IN
Thread Quantity Per Inch9
Thread DirectionRIGHT-HAND
Minimum Tensile Strength55000 POUNDS PER SQUARE INCH LBS
Features ProvidedFINISHED HEAD
Head StyleHEXAGON
Nominal Thread Diameter0.875 INCHES IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
MaterialSTEEL OVERALL
Hardness Rating95.0 ROCKWELL B MAXIMUM OVERALL
Surface Treatment Document and ClassificationQQ-Z-325,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Nondefinitive Spec/std Data1 TYPE AND 2 GRADE
Thread Class2A A
Material Document and ClassificationSAE GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Surface TreatmentZINC OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor5306-00-018-0084
HAZMATNo
Verified Substitutes 12
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
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
MIL-DTL-1222 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-S-1222 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M1222RN14C260GCNZE Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
SUCCESSOR 5306-00-018-0084 Bolt,machine
5306-00-018-6649SUCCESSOR
BOLT,MACHINE
186649
5306-00-174-0532SUCCESSOR
BOLT,MACHINE
5306-00-174-0539SUCCESSOR
BOLT,MACHINE
5306-00-174-4166SUCCESSOR
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
5306-00-174-9467SUCCESSOR
BOLT,MACHINE
5306-00-174-9468SUCCESSOR
BOLT,MACHINE
5306-00-174-9472SUCCESSOR
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-299-2342?

NSN 5306-00-299-2342 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 5306-00-299-2342?

NSN 5306-00-299-2342 has 3 cross-referenced part numbers: MIL-DTL-1222 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-S-1222 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M1222RN14C260GCNZE (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5306-00-299-2342?

There are 12 known substitutes for 5306-00-299-2342: 5306-00-018-0084, 5306-00-018-6649, 5306-00-174-0532 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-1222?

Key specifications for MIL-DTL-1222: Width Between Flats: 1.269 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN; Fastener Length: 3.750 INCHES NOMINAL IN; Head Height: 0.531 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN; Thread Length: 2.000 INCHES MINIMUM IN. 18 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com