PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B1821BH031C375NBolt,machine

American National Standards Institute Incorporated Dba American National Standards Institute · NSN 5306-00-226-4840 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-226-4840 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-226-4840. Primary manufacturer part number: B1821BH031C375N.
Features
  • Bolt,machine — FSC 5306
  • Thread Length: 0.875 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN
  • Head Height: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
  • Thread Class: 2A A
  • Hardness Rating: 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
  • Thread Quantity Per Inch: 18
  • Material Document and Classification: SAEJ429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A354 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Minimum Tensile Strength: 150000 POUNDS PER SQUARE INCH LBS
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 5306-00-226-4840, 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 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5306-00-226-4840
Primary Part NumberB1821BH031C375N
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
Head Height0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
Thread Class2A A
Hardness Rating33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
Thread Quantity Per Inch18
Material Document and ClassificationSAEJ429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A354 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Minimum Tensile Strength150000 POUNDS PER SQUARE INCH LBS
Surface Treatment Document and ClassificationASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Thread DirectionRIGHT-HAND
Head StyleHEXAGON
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Surface TreatmentZINC AND CHROMATE OVERALL
Surface Finish63.0 MICROINCHES THREADS
Nominal Thread Diameter0.312 INCHES IN
MaterialSTEEL OVERALL
Width Between Flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
Features ProvidedFINISHED HEAD
Fastener Length3.656 INCHES MINIMUM AND 3.750 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5306-00-008-3693
HAZMATNo
Verified Substitutes 12
Bolt,machine
5306-00-010-0023100023 SUCCESSOR
Bolt,machine
General Motors Llc Dba General Motors Llc
Bolt,machine
5306-00-010-0125100125 SUCCESSOR
Bolt,machine
General Motors Llc Dba General Motors Llc
Bolt,machine
Bolt,machine
5306-00-010-6327106327 SUCCESSOR
Bolt,machine
Rolls-Royce Solutions America Inc
5306-00-012-2065122065 SUCCESSOR
Bolt,machine
General Motors Llc Dba General Motors Llc
5306-00-012-3499123499 SUCCESSOR
Bolt,machine
General Motors Llc Dba General Motors Llc
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
79H3300 Deere & Company Dba Deere John Co (USA)
FFS85 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
B1821BH031C375N PRIMARY American National Standards Institute Incorporated Dba American National Standards Institute (USA)
MS90728-47 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
413-560 Cnh Industrial America Llc Dba Cnh America (USA)
Related Parts
SUCCESSOR 5306-00-008-3693 Bolt,machine
5306-00-010-0023SUCCESSOR
BOLT,MACHINE
100023
5306-00-010-0024SUCCESSOR
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5306-00-010-0125SUCCESSOR
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100125
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5306-00-010-0130SUCCESSOR
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106327
5306-00-012-2065SUCCESSOR
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122065
5306-00-012-3499SUCCESSOR
BOLT,MACHINE
123499
5306-00-012-3785SUCCESSOR
BOLT,MACHINE
5306-00-017-9819SUCCESSOR
BOLT,MACHINE
5306-00-017-9827SUCCESSOR
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-226-4840?

NSN 5306-00-226-4840 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 5306-00-226-4840?

NSN 5306-00-226-4840 has 5 cross-referenced part numbers: 79H3300 (Deere & Company Dba Deere John Co), FFS85 (Federal Specifications Promulgated by General Services Administration Washington DC), B1821BH031C375N (American National Standards Institute Incorporated Dba American National Standards Institute), MS90728-47 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 413-560 (Cnh Industrial America Llc Dba Cnh America).

What NSN replaces 5306-00-226-4840?

There are 12 known substitutes for 5306-00-226-4840: 5306-00-008-3693, 5306-00-010-0023, 5306-00-010-0024 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B1821BH031C375N?

Key specifications for B1821BH031C375N: Thread Length: 0.875 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN; Head Height: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN; Thread Class: 2A A; Hardness Rating: 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-226-4840 still in active supply?

NSN 5306-00-226-4840 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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