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Genuine Aircraft Hardware Co.
Socket Head Cap Screws
NAS1351 (Fine) and NAS1352(Coarse)
Lengths may be requested that are less than
“Thread Length Min”, they will just be fully threaded
HELP WITH THE SELECTION OF PART NUMBERS
DataShee
The four numbers after “NAS” denote “Fine” or “Course” Threads
Then to designate material add a( - ) for Alloy Steel 180KSI, or a ( C ) for Corrosion Resistant Steel
(18-8) 80KSI, or an ( N ) 140-160KSI for Heat Resisting Steel per AMS5731 or 5737 (A286).
After the ( - , C, or N) for material, place the Diameter Designation for your desired Shank Diameter
that corresponds with your desired Thread Size. After all that but before the Length add Features if
Features for rotational security.
( H ) for Drilled Head, or
DataShedets4irUe.dc.oAmfter features (if any) then the Overall
Length is stated in 1/16ths of an inch. The last
designation is for plating or finish.
( LE ) for self locking element any type P= Cadmium II Plating Type 2, class 2, All materials
( LL ) for self locking element Strip Type S= Silver Flashed for ( C ) and ( N ) materials.
( LN ) for self locking element Pellet Type
( LB ) for self locking element Patch Type
No Suffix = Black oxide for (Alloy Steel) and
Passivated for ( C ) and ( N ) Materials
Example of Part Number: NAS1351-4H14
Socket Head Cap Screw, 1/4-28 Threads, Alloy Steel, Holes in Head , 7/8” Overall Length, Black Oxide Coated.
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22 Documents in this book for REFERENCE ONLY, not intended for desDigant.aSNhoet egut4aUra.nctoemed for accuracy.
DataSheet4AUll .Ocorimginal Text, Tables and Drawings are Copyright © by Genuine Aircraft Hardware Co. 2005