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 5306-00-174-9461 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-174-9461 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-174-9461. Primary manufacturer part number: MIL-S-1222.
Features
  • Bolt,machine — FSC 5306
  • Thread Direction: RIGHT-HAND
  • Fastener Length: 1.250 INCHES NOMINAL IN
  • Nondefinitive Spec/std Data: 2 GRADE AND I TYPE
  • Nominal Thread Diameter: 0.500 INCHES IN
  • Features Provided: FINISHED HEAD
  • Minimum Tensile Strength: 75000 POUNDS PER SQUARE INCH LBS
  • Head Height: 0.312 INCHES NOMINAL IN
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 5306-00-174-9461, 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 5 commercial cross-references from 4 manufacturers, 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
NSN5306-00-174-9461
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 DirectionRIGHT-HAND
Fastener Length1.250 INCHES NOMINAL IN
Nondefinitive Spec/std Data2 GRADE AND I TYPE
Nominal Thread Diameter0.500 INCHES IN
Features ProvidedFINISHED HEAD
Minimum Tensile Strength75000 POUNDS PER SQUARE INCH LBS
Head Height0.312 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Surface Treatment Document and ClassificationQQ-Z-325,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Head StyleHEXAGON
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Hardness Rating100.0 ROCKWELL B NOMINAL OVERALL
Surface TreatmentZINC OVERALL
Thread Class2A A
Thread Length1.250 INCHES MINIMUM IN
Width Between Flats0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Thread Quantity Per Inch13
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor5306-00-270-9422
HAZMATNo
Verified Substitutes 12
5306-00-227-05820.75010UNC2A1.750T1G5BAC SUCCESSOR
Bolt,machine
Nucor Fastener
5306-00-227-0601306-40172 SUCCESSOR
Bolt,machine
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division
Bolt,machine
5306-00-281-51641D4703 SUCCESSOR
Bolt,machine
Caterpillar Inc Div Caterpillar Defense
Bolt,machine
Bolt,machine
Bolt,machine
5306-00-426-34021D4608 SUCCESSOR
Bolt,machine
Caterpillar Inc Div Caterpillar Defense
5306-00-732-77146C-3210 SUCCESSOR
Bolt,machine
Caterpillar Inc Div Caterpillar Defense
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
MIL-DTL-1222 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
0.50013UNC2A1.250LGST American National Standards Institute Incorporated Dba American National Standards Institute (USA)
E-172-052-574 Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric (USA)
H577-6902-1 PIE Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
Related Parts
SUCCESSOR 5306-00-270-9422 Bolt,machine
5306-00-227-0582SUCCESSOR
BOLT,MACHINE
0.75010UNC2A1.750T1G5BAC
5306-00-227-0601SUCCESSOR
BOLT,MACHINE
306-40172
5306-00-281-5164SUCCESSOR
BOLT,MACHINE
1D4703
5306-00-299-2342SUCCESSOR
BOLT,MACHINE
5306-00-299-2369SUCCESSOR
BOLT,MACHINE
5306-00-299-2378SUCCESSOR
BOLT,MACHINE
5306-00-426-3402SUCCESSOR
BOLT,MACHINE
1D4608
5306-00-732-7714SUCCESSOR
BOLT,MACHINE
6C-3210
5306-01-282-7489SUCCESSOR
BOLT,MACHINE
5306-01-323-5536SUCCESSOR
BOLT,MACHINE
5306-01-327-3526SUCCESSOR
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-174-9461?

NSN 5306-00-174-9461 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 5306-00-174-9461?

NSN 5306-00-174-9461 has 5 cross-referenced part numbers: MIL-S-1222 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-1222 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 0.50013UNC2A1.250LGST (American National Standards Institute Incorporated Dba American National Standards Institute), E-172-052-574 (Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric), H577-6902-1 PIE (Huntington Ingalls Inc Div Newport News Shipbuilding).

What NSN replaces 5306-00-174-9461?

There are 12 known substitutes for 5306-00-174-9461: 5306-00-227-0582, 5306-00-227-0601, 5306-00-270-9422 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 Direction: RIGHT-HAND; Fastener Length: 1.250 INCHES NOMINAL IN; Nondefinitive Spec/std Data: 2 GRADE AND I TYPE; Nominal Thread Diameter: 0.500 INCHES 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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