PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

181339Bolt,machine

Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ · NSN 5306-00-018-1339 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-018-1339 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-018-1339. Primary manufacturer part number: 181339.
Features
  • Bolt,machine — FSC 5306
  • Nominal Thread Diameter: 0.312 INCHES IN
  • Minimum Tensile Strength: 120000 POUNDS PER SQUARE INCH LBS
  • Head Style: HEXAGON
  • Width Between Flats: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
  • Fastener Length: 1.000 INCHES NOMINAL IN
  • Head Height: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
  • Nondefinitive Spec/std Data: 2 TYPE AND 10P STYLE AND 5 GRADE
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 5306-00-018-1339, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-018-1339
Primary Part Number181339
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerNavistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
StatusACTIVE
Nominal Thread Diameter0.312 INCHES IN
Minimum Tensile Strength120000 POUNDS PER SQUARE INCH LBS
Head StyleHEXAGON
Width Between Flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
Fastener Length1.000 INCHES NOMINAL IN
Head Height0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
Nondefinitive Spec/std Data2 TYPE AND 10P STYLE AND 5 GRADE
Thread Class2A A
Thread Quantity Per Inch24
MaterialSTEEL OVERALL
Thread Length0.875 INCHES MINIMUM IN
Thread Series DesignatorUNF
Hardness Rating23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
Features ProvidedFINISHED HEAD
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor5306-00-496-7678
HAZMATNo
Verified Substitutes 1
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
181339 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
FFS85TYPE2STYLE10PGRADE5 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
MS35296-34 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
181339 International Harvester Co Agricultural Equipment Div (USA)
181339 Navistar International Corporation Dba Navistar (USA)
Related Parts
SUCCESSOR 5306-00-496-7678 Bolt,machine

Frequently Asked Questions

What is NSN 5306-00-018-1339?

NSN 5306-00-018-1339 is a Bolt,machine, manufactured by Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-018-1339?

NSN 5306-00-018-1339 has 5 cross-referenced part numbers: 181339 (Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/), FFS85TYPE2STYLE10PGRADE5 (Federal Specifications Promulgated by General Services Administration Washington DC), MS35296-34 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 181339 (International Harvester Co Agricultural Equipment Div), 181339 (Navistar International Corporation Dba Navistar).

What NSN replaces 5306-00-018-1339?

There is 1 known substitute for 5306-00-018-1339: 5306-00-496-7678. Verify interchangeability with system specifications before substitution.

What are the specifications of 181339?

Key specifications for 181339: Nominal Thread Diameter: 0.312 INCHES IN; Minimum Tensile Strength: 120000 POUNDS PER SQUARE INCH LBS; Head Style: HEXAGON; Width Between Flats: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN. 15 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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