PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B1821BH031C475NBolt,machine

American National Standards Institute Incorporated Dba American National Standards Institute · NSN 5306-00-226-4844 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-226-4844 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-226-4844. Primary manufacturer part number: B1821BH031C475N.
Features
  • Bolt,machine — FSC 5306
  • Head Style: HEXAGON
  • Minimum Tensile Strength: 150000 POUNDS PER SQUARE INCH LBS
  • Width Between Flats: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
  • Thread Quantity Per Inch: 18
  • Nominal Thread Diameter: 0.312 INCHES IN
  • Fastener Length: 4.656 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN
  • Surface Treatment: ZINC AND CHROMATE 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 5306-00-226-4844, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-226-4844
Primary Part NumberB1821BH031C475N
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerAmerican National Standards Institute Incorporated Dba American National Standards Institute
StatusACTIVE
Head StyleHEXAGON
Minimum Tensile Strength150000 POUNDS PER SQUARE INCH LBS
Width Between Flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
Thread Quantity Per Inch18
Nominal Thread Diameter0.312 INCHES IN
Fastener Length4.656 INCHES MINIMUM AND 4.750 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
Thread DirectionRIGHT-HAND
MaterialSTEEL OVERALL
Surface Finish63.0 MICROINCHES THREADS
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Material Document and ClassificationSAE J429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A354 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Features ProvidedFINISHED HEAD
Thread Length0.875 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN
Head Height0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3110-00-198-1389ASTM F2431 INTERCHANGEABLE
Ring,bearing,inner
American Society for Testing and Materials Dba Astm International
5305-00-207-4213125178 INTERCHANGEABLE
Screw,shoulder
Telemechanics Inc
5930-00-329-63993-3224 INTERCHANGEABLE
Switch,sensitive
Maytag Corporation Dba Maytag Appliancessales
3825-00-831-375933224 INTERCHANGEABLE
Pad Mounting
Allianz Sweeper Company
5930-01-106-0622 INTERCHANGEABLE
Switch,push
Cross-Reference Index
Part NumberManufacturer
MS90728-51 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
B1821BH031C475N PRIMARY American National Standards Institute Incorporated Dba American National Standards Institute (USA)
33224 Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp. (USA)
Related Parts
3110-00-198-1389INTERCHANGEABLE
RING,BEARING,INNER
ASTM F2431
5305-00-207-4213INTERCHANGEABLE
SCREW,SHOULDER
125178
5930-00-329-6399INTERCHANGEABLE
SWITCH,SENSITIVE
3-3224
3825-00-831-3759INTERCHANGEABLE
PAD MOUNTING
33224
5930-01-106-0622INTERCHANGEABLE
SWITCH,PUSH

Frequently Asked Questions

What is NSN 5306-00-226-4844?

NSN 5306-00-226-4844 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: active.

What are the part numbers for NSN 5306-00-226-4844?

NSN 5306-00-226-4844 has 3 cross-referenced part numbers: MS90728-51 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), B1821BH031C475N (American National Standards Institute Incorporated Dba American National Standards Institute), 33224 (Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.).

What NSN replaces 5306-00-226-4844?

There are 5 known substitutes for 5306-00-226-4844: 3110-00-198-1389, 5305-00-207-4213, 5930-00-329-6399 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B1821BH031C475N?

Key specifications for B1821BH031C475N: Head Style: HEXAGON; Minimum Tensile Strength: 150000 POUNDS PER SQUARE INCH LBS; Width Between Flats: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Thread Quantity Per Inch: 18. 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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