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 5306-01-323-5536 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-01-323-5536 — this item is cataloged by the U.S. Government under National Stock Number 5306-01-323-5536. Primary manufacturer part number: MIL-DTL-1222.
Features
  • Bolt,machine — FSC 5306
  • Thread Class: 2A A
  • Head Style: HEXAGON
  • Thread Direction: RIGHT-HAND
  • Fastener Length: 5.000 INCHES NOMINAL IN
  • Width Between Flats: 1.575 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN
  • Thread Quantity Per Inch: 8
  • Material: STEEL COMP 4140 OR STEEL COMP 4142 OR STEEL COMP 4145 OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 4140 or Steel Comp 4142 or Steel Comp 4145 Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-01-323-5536, 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 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 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
NSN5306-01-323-5536
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
Thread Class2A A
Head StyleHEXAGON
Thread DirectionRIGHT-HAND
Fastener Length5.000 INCHES NOMINAL IN
Width Between Flats1.575 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN
Thread Quantity Per Inch8
MaterialSTEEL COMP 4140 OR STEEL COMP 4142 OR STEEL COMP 4145 OVERALL
Thread Length1.750 INCHES NOMINAL IN
Nominal Thread Diameter1.000 INCHES IN
Head Height0.591 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN
Features ProvidedFINISHED HEAD
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
Grip Length3.250 INCHES NOMINAL IN
Nondefinitive Spec/std Data3 TYPE AND B7 GRADE
Surface Treatment Document and ClassificationASTM B633 TY2 CL FE/ZN 13 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Hardness Rating25.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Surface TreatmentZINC AND CHROMATE OVERALL
Material Document and ClassificationASTM A193 GR B7 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Specification/standard Data81349--1222B3N16C280GANZE GOVERNMENT SPECIFICATION
Minimum Yield Strength105000 POUNDS PER SQUARE INCH LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor5306-00-018-0084
HAZMATNo
Verified Substitutes 12
5306-00-638-5811AN10H20A SUCCESSOR
Bolt,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
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-DTL-1222 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
1.000-8 UNC 2A 5.000 LG American National Standards Institute Incorporated Dba American National Standards Institute (USA)
M1222B3N16C280GANZE 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
MIL-DTL-1222J Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-S-1222, TY- III, GR.B7, Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
SUCCESSOR 5306-00-018-0084 Bolt,machine
5306-00-638-5811SUCCESSOR
BOLT,MACHINE
AN10H20A
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

Frequently Asked Questions

What is NSN 5306-01-323-5536?

NSN 5306-01-323-5536 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 5306-01-323-5536?

NSN 5306-01-323-5536 has 6 cross-referenced part numbers: MIL-DTL-1222 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 1.000-8 UNC 2A 5.000 LG (American National Standards Institute Incorporated Dba American National Standards Institute), M1222B3N16C280GANZE (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), MIL-DTL-1222J (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 5306-01-323-5536?

There are 12 known substitutes for 5306-01-323-5536: 5306-00-638-5811, 5306-00-018-0084, 5306-00-018-6649 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-1222?

Key specifications for MIL-DTL-1222: Thread Class: 2A A; Head Style: HEXAGON; Thread Direction: RIGHT-HAND; Fastener Length: 5.000 INCHES NOMINAL IN. 21 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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