PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B1821BH031C138NBolt,machine

American National Standards Institute Incorporated Dba American National Standards Institute · NSN 5306-00-226-4830 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-226-4830 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-226-4830. Primary manufacturer part number: B1821BH031C138N.
Features
  • Bolt,machine — FSC 5306
  • Thread Length: 0.875 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN
  • Nominal Thread Diameter: 0.312 INCHES IN
  • Features Provided: FINISHED HEAD
  • Thread Quantity Per Inch: 18
  • Minimum Tensile Strength: 150000 POUNDS PER SQUARE INCH LBS
  • Material: STEEL OVERALL
  • Material Document and Classification: SAE J429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A354 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
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 5306-00-226-4830, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is American National Standards Institute Incorporated Dba American National Standards Institute. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5306-00-226-4830
Primary Part NumberB1821BH031C138N
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerAmerican National Standards Institute Incorporated Dba American National Standards Institute
StatusCANCELLED
Thread Length0.875 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN
Nominal Thread Diameter0.312 INCHES IN
Features ProvidedFINISHED HEAD
Thread Quantity Per Inch18
Minimum Tensile Strength150000 POUNDS PER SQUARE INCH LBS
MaterialSTEEL OVERALL
Material Document and ClassificationSAE J429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A354 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Head StyleHEXAGON
Hardness Rating32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
Head Height0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
Fastener Length1.313 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN
Surface TreatmentZINC AND CHROMATE OVERALL
Thread Class2A A
Surface Treatment Document and ClassificationASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Width Between Flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Surface Finish63.0 MICROINCHES THREADS
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
5306-00-010-6327106327 SUCCESSOR
Bolt,machine
Rolls-Royce Solutions America Inc
5306-00-018-0082 INTERCHANGEABLE
Bolt,machine
5310-00-208-685313482 INTERCHANGEABLE
Nut,plain,hexagon
Cornell-Carr Co., Inc.
4920-00-682-4950 INTERCHANGEABLE
Component Board
2920-00-882-34012A042-0001 INTERCHANGEABLE
Starter,engine,electrical
Mobile Power Technologies Inc
4720-00-976-3403S6130-80415-1 INTERCHANGEABLE
Hose Assembly,metallic
Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
5325-01-123-910913482 INTERCHANGEABLE
Grommet,nonmetallic
Elbitamerica, Inc.
5960-01-148-5859106327 INTERCHANGEABLE
Electron Tube
General Electric Company Dba Ge Aerospace
2530-01-285-2733106327 INTERCHANGEABLE
Valve,brake Pneumatic
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
6685-01-514-7434 INTERCHANGEABLE
Thermometer,self-Indicating
Cross-Reference Index
Part NumberManufacturer
10082447 Nimikkeistokeskus Ncb Finland (FIN)
B1821BH031C138N PRIMARY American National Standards Institute Incorporated Dba American National Standards Institute (USA)
180082 Zf Industrieantriebe Witten Gmbh (DEU)
13482 Leroi International Inc Dba Compair Leroi (USA)
SC2-167 Carter Motor Co (USA)
106327 Zf Industrieantriebe Witten Gmbh (DEU)
MS90728-37 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5306-00-010-6327SUCCESSOR
BOLT,MACHINE
106327
5306-00-018-0082INTERCHANGEABLE
BOLT,MACHINE
5310-00-208-6853INTERCHANGEABLE
NUT,PLAIN,HEXAGON
13482
4920-00-682-4950INTERCHANGEABLE
COMPONENT BOARD
2920-00-882-3401INTERCHANGEABLE
STARTER,ENGINE,ELECTRICAL
2A042-0001
4720-00-976-3403INTERCHANGEABLE
HOSE ASSEMBLY,METALLIC
S6130-80415-1
5325-01-123-9109INTERCHANGEABLE
GROMMET,NONMETALLIC
13482
5960-01-148-5859INTERCHANGEABLE
ELECTRON TUBE
106327
2530-01-285-2733INTERCHANGEABLE
VALVE,BRAKE PNEUMATIC
106327
6685-01-514-7434INTERCHANGEABLE
THERMOMETER,SELF-INDICATING

Frequently Asked Questions

What is NSN 5306-00-226-4830?

NSN 5306-00-226-4830 is a Bolt,machine, manufactured by American National Standards Institute Incorporated Dba American National Standards Institute, classified under FSC 5306 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5306-00-226-4830?

NSN 5306-00-226-4830 has 7 cross-referenced part numbers: 10082447 (Nimikkeistokeskus Ncb Finland), B1821BH031C138N (American National Standards Institute Incorporated Dba American National Standards Institute), 180082 (Zf Industrieantriebe Witten Gmbh), 13482 (Leroi International Inc Dba Compair Leroi), SC2-167 (Carter Motor Co) and 2 more.

What NSN replaces 5306-00-226-4830?

There are 10 known substitutes for 5306-00-226-4830: 5306-00-010-6327, 5306-00-018-0082, 5310-00-208-6853 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B1821BH031C138N?

Key specifications for B1821BH031C138N: Thread Length: 0.875 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.312 INCHES IN; Features Provided: FINISHED HEAD; End Item Identification: MULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-226-4830 still in active supply?

NSN 5306-00-226-4830 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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