PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILB6812Bolt,machine

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5306-00-150-9866 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-150-9866 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-150-9866. Primary manufacturer part number: MILB6812.
Features
  • Bolt,machine — FSC 5306
  • Thread Quantity Per Inch: 28
  • Grip Length: 1.797 INCHES MINIMUM AND 1.828 INCHES MAXIMUM IN
  • Thread Direction: RIGHT-HAND
  • Thread Length: 0.438 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
  • Features Provided: FINISHED HEAD
  • Minimum Tensile Strength: 125000 POUNDS PER SQUARE INCH LBS
  • Head Height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 431 Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-150-9866, 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 4 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
NSN5306-00-150-9866
Primary Part NumberMILB6812
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 Quantity Per Inch28
Grip Length1.797 INCHES MINIMUM AND 1.828 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Thread Length0.438 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
Features ProvidedFINISHED HEAD
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
Head Height0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
Thread Series DesignatorUNF
Head StyleHEXAGON
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Material Document and ClassificationMIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface TreatmentPASSIVATE OVERALL
MaterialSTEEL COMP 431 OVERALL
Width Between Flats0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
Thread Class3A A
Nominal Thread Diameter0.250 INCHES IN
Fastener Length2.266 INCHES MINIMUM AND 2.312 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor5306-00-144-3646
HAZMATNo
Verified Substitutes 12
Bolt,machine
Bolt,machine
Bolt,close Tolerance
Bolt,close Tolerance
5306-00-150-9233AN5-40A SUCCESSOR
Bolt,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Bolt,machine
Bolt,machine
Bolt,clevis
Bolt,machine
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
MILB6812 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILB6812 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
AN4C22A Aeronautical Standards Group Dept of Navy and Air Force (USA)
5306PL1494353 Jednolity Indeks Materialowy - Uniform Material Index (POL)
Related Parts
SUCCESSOR 5306-00-144-3646 Bolt,machine
5306-00-063-3268SUCCESSOR
BOLT,MACHINE
5306-00-144-4058SUCCESSOR
BOLT,CLOSE TOLERANCE
5306-00-150-9097SUCCESSOR
BOLT,CLOSE TOLERANCE
5306-00-150-9233SUCCESSOR
BOLT,MACHINE
AN5-40A
5306-00-150-9867SUCCESSOR
BOLT,MACHINE
5306-00-150-9868SUCCESSOR
BOLT,MACHINE
5306-00-151-0656SUCCESSOR
BOLT,CLEVIS
5306-00-151-0709SUCCESSOR
BOLT,MACHINE
5306-00-151-1084SUCCESSOR
BOLT,MACHINE
5306-00-151-2513SUCCESSOR
BOLT,MACHINE
5306-00-151-2603SUCCESSOR
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-150-9866?

NSN 5306-00-150-9866 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 5306-00-150-9866?

NSN 5306-00-150-9866 has 4 cross-referenced part numbers: MILB6812 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILB6812 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), AN4C22A (Aeronautical Standards Group Dept of Navy and Air Force), 5306PL1494353 (Jednolity Indeks Materialowy - Uniform Material Index).

What NSN replaces 5306-00-150-9866?

There are 12 known substitutes for 5306-00-150-9866: 5306-00-063-3268, 5306-00-144-3646, 5306-00-144-4058 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILB6812?

Key specifications for MILB6812: Thread Quantity Per Inch: 28; Grip Length: 1.797 INCHES MINIMUM AND 1.828 INCHES MAXIMUM IN; Thread Direction: RIGHT-HAND; Thread Length: 0.438 INCHES MINIMUM AND 0.516 INCHES MAXIMUM 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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