Aeronautical Standard - Machine Bolt - AN3C4A



Aeronautical Standard - Machine Bolt - AN3-4A
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Aeronautical Standard - Machine Bolt - AN3C4A
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Aeronautical Standard - Machine Bolt - AN3C4A
Genuine OEM Part

Description: Machine Bolt 
Part Number: AN3C4A
Alternate Part Numbers: No known alternate

Product Overview

An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.


Item Specification

Thread Class



Thread Direction


Thread Length

0.406 inches minimum

Fastener Length

0.531 inches nominal

Head Style


Head Height

0.109 inches minimum and 0.141 inches maximum

Width Between Flats

0.365 inches minimum and 0.377 inches maximum

Nominal Thread Diameter

0.190 inches

Grip Length

0.125 inches nominal

Features Provided

Finished head

Thread Quantity per Inch


Minimum Tensile Strength

125000 pounds per square inch

Hardness Rating

26.0 rockwell C minimum overall and 32.0 rockwell C maximum overall


Steel corrosion resisting overall

Material Document and Classification

QQ-S-770 fed spec single material response overall

Surface Treatment

Passivate overall

Thread Series Designator



Between AirParts' branded hardware products, and our Seller's hardware offerings, we have hundreds of thousands of hardware parts in stock.

Additional info
Colors Silver
Dimensions (W x H x D) 0.190" x 0.531" x 0.377" inches
Length 0.531" inches
Weight 0.05 lb
8130-3 Eligible Yes
ATA Chapter 51 ATA Standard Practices and Structures
Available Conditions NE / NS
Cage Code 88044
Country of origin United States of America
FAA Approval Code PC
Grip 0.125 inches nominal
Hazmat Code Not Applicable
Hazmat(Y/N) N
Material Corrosion Resistant Steel (CRES)
NSN 5306-00-150-9528
Schedule B 7318.15.2095
Thread 0.406 inches minimum
Total Shelf Life (days) Not Applicable
Type Bolt
Units of Measure (UoM) Each
Brand Aeronautical Standard Group Inc
Color Silver
Condition status Depreciated