PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4423ABolt,machine

Brinkley Technology Group Llc Dba Hercules Manufacturing · NSN 5306-00-276-8469 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-276-8469 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-276-8469. Primary manufacturer part number: 4423A.
Features
  • Bolt,machine — FSC 5306
  • Thread Quantity Per Inch: 16
  • Minimum Tensile Strength: 120000 POUNDS PER SQUARE INCH LBS
  • Thread Direction: RIGHT-HAND
  • Nominal Thread Diameter: 0.375 INCHES IN
  • Head Height: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
  • Head Style: HEXAGON
  • Width Between Flats: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1050 or Steel Comp 1552 or Steel Comp 1053 Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-276-8469, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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: Cancelled.

Technical Specifications
ParameterValue
NSN5306-00-276-8469
Primary Part Number4423A
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerBrinkley Technology Group Llc Dba Hercules Manufacturing
StatusCANCELLED
Thread Quantity Per Inch16
Minimum Tensile Strength120000 POUNDS PER SQUARE INCH LBS
Thread DirectionRIGHT-HAND
Nominal Thread Diameter0.375 INCHES IN
Head Height0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
Head StyleHEXAGON
Width Between Flats0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
Fastener Length0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Thread Length0.625 INCHES MINIMUM IN
MaterialSTEEL COMP 1050 OR STEEL COMP 1552 OR STEEL COMP 1053 OVERALL
Thread Class2A A
Features ProvidedFINISHED HEAD
Departure From Cited DesignatorAS MODIFIED BY THREAD LG
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Hardness Rating23.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
Nondefinitive Spec/std Data1 TYPE AND 5 GRADE
Grip Length0.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5306-00-270-9422
HAZMATNo
Verified Substitutes 12
No Item Name Available
5306-00-227-05820.75010UNC2A1.750T1G5BAC SUCCESSOR
Bolt,machine
Nucor Fastener
5306-00-227-0601306-40172 SUCCESSOR
Bolt,machine
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division
Bolt,machine
5306-00-281-51641D4703 SUCCESSOR
Bolt,machine
Caterpillar Inc Div Caterpillar Defense
Bolt,machine
Bolt,machine
Bolt,machine
5306-00-426-34021D4608 SUCCESSOR
Bolt,machine
Caterpillar Inc Div Caterpillar Defense
5306-00-732-77146C-3210 SUCCESSOR
Bolt,machine
Caterpillar Inc Div Caterpillar Defense
Cross-Reference Index
Part NumberManufacturer
4423A Hercules Engine Co Inc (USA)
4423 0mcc Inc (USA)
4423A PRIMARY Brinkley Technology Group Llc Dba Hercules Manufacturing (USA)
MIL-S-1222 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-1222 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
SUCCESSOR 5306-00-270-9422 Bolt,machine
5306-01-236-4346SUCCESSOR
NO ITEM NAME AVAILABLE
5306-00-227-0582SUCCESSOR
BOLT,MACHINE
0.75010UNC2A1.750T1G5BAC
5306-00-227-0601SUCCESSOR
BOLT,MACHINE
306-40172
5306-00-281-5164SUCCESSOR
BOLT,MACHINE
1D4703
5306-00-299-2342SUCCESSOR
BOLT,MACHINE
5306-00-299-2369SUCCESSOR
BOLT,MACHINE
5306-00-299-2378SUCCESSOR
BOLT,MACHINE
5306-00-426-3402SUCCESSOR
BOLT,MACHINE
1D4608
5306-00-732-7714SUCCESSOR
BOLT,MACHINE
6C-3210
5306-01-282-7489SUCCESSOR
BOLT,MACHINE
5306-01-323-5536SUCCESSOR
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-276-8469?

NSN 5306-00-276-8469 is a Bolt,machine, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 5306 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5306-00-276-8469?

NSN 5306-00-276-8469 has 5 cross-referenced part numbers: 4423A (Hercules Engine Co Inc), 4423 (0mcc Inc), 4423A (Brinkley Technology Group Llc Dba Hercules Manufacturing), MIL-S-1222 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-1222 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5306-00-276-8469?

There are 12 known substitutes for 5306-00-276-8469: 5306-01-236-4346, 5306-00-227-0582, 5306-00-227-0601 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4423A?

Key specifications for 4423A: Thread Quantity Per Inch: 16; Minimum Tensile Strength: 120000 POUNDS PER SQUARE INCH LBS; Thread Direction: RIGHT-HAND; Nominal Thread Diameter: 0.375 INCHES IN. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-276-8469 still in active supply?

NSN 5306-00-276-8469 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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