PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A821Bolt,machine

Am General Llc · NSN 5306-00-456-6211 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-456-6211 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-456-6211. Primary manufacturer part number: A821.
Features
  • Bolt,machine — FSC 5306
  • Nominal Thread Diameter: 0.375 INCHES IN
  • Width Between Flats: 0.562 INCHES NOMINAL IN
  • Thread Length: 1.000 INCHES MINIMUM IN
  • Thread Quantity Per Inch: 24
  • Head Height: 0.281 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Features Provided: FINISHED HEAD
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 5306-00-456-6211, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Am General Llc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-456-6211
Primary Part NumberA821
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerAm General Llc
StatusACTIVE
Nominal Thread Diameter0.375 INCHES IN
Width Between Flats0.562 INCHES NOMINAL IN
Thread Length1.000 INCHES MINIMUM IN
Thread Quantity Per Inch24
Head Height0.281 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Features ProvidedFINISHED HEAD
Thread Series DesignatorUNF
Thread Class3A A
Thread DirectionRIGHT-HAND
Hardness Rating21.0 ROCKWELL C MINIMUM AND 27.0 ROCKWELL C MAXIMUM OVERALL
Head StyleHEXAGON
Fastener Length1.062 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5330-00-104-2659 INTERCHANGEABLE
Packing,preformed
5315-00-839-2325109155 INTERCHANGEABLE
Pin,cotter
Cummins Inc.
5996-01-612-8119A82-1 INTERCHANGEABLE
Amplifier,radio Frequency
Macom Technology Solutions Inc
Cross-Reference Index
Part NumberManufacturer
355526S Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
A821 PRIMARY Am General Llc (USA)
6-73-1117 PRIMARY Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products (USA)
R21009 Pressed Metals of America Inc (USA)
355526S Ford Motor Company (USA)
7373188 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
Related Parts
5330-00-104-2659INTERCHANGEABLE
PACKING,PREFORMED
5315-00-839-2325INTERCHANGEABLE
PIN,COTTER
109155
5996-01-612-8119INTERCHANGEABLE
AMPLIFIER,RADIO FREQUENCY
A82-1

Frequently Asked Questions

What is NSN 5306-00-456-6211?

NSN 5306-00-456-6211 is a Bolt,machine, manufactured by Am General Llc, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-456-6211?

NSN 5306-00-456-6211 has 6 cross-referenced part numbers: 355526S (Ford Motor Co Ford Parts and Service Div Government Part Sales), A821 (Am General Llc), 6-73-1117 (Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products), R21009 (Pressed Metals of America Inc), 355526S (Ford Motor Company) and 1 more.

What NSN replaces 5306-00-456-6211?

There are 3 known substitutes for 5306-00-456-6211: 5330-00-104-2659, 5315-00-839-2325, 5996-01-612-8119. Verify interchangeability with system specifications before substitution.

What are the specifications of A821?

Key specifications for A821: Nominal Thread Diameter: 0.375 INCHES IN; Width Between Flats: 0.562 INCHES NOMINAL IN; Thread Length: 1.000 INCHES MINIMUM IN; Thread Quantity Per Inch: 24. 13 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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