3176207-C-216, Aviation Grade Cap Screw

3176207-C-216, Aviation Grade Socket Head Cap Screw. Made by M.S. Aerospace, Inc.
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 3.857 INCHES MINIMUM AND 4.000 INCHES MAXIMUM
FASTENER LENGTH 4.000 INCHES NOMINAL
HEAD STYLE C49 FLAT CHAMFER
HEAD DIAMETER 0.642 INCHES MINIMUM AND 0.656 INCHES MAXIMUM
HEAD HEIGHT 0.430 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
LOCKING FEATURE PATCH THREADS
INTERNAL DRIVE STYLE D5 HEXAGON
NOMINAL THREAD DIAMETER 0.437 INCHES
WIDTH ACROSS FLATS 0.375 INCHES NOMINAL
THREAD QUANTITY PER INCH 14
MINIMUM TENSILE STRENGTH 170000 POUNDS PER SQUARE INCH
HARDNESS RATING 38.0 ROCKWELL C MINIMUM FASTENER AND 45.0 ROCKWELL C MAXIMUM
MINIMUM YIELD STRENGTH 150000 POUNDS PER SQUARE INCH
MATERIAL STEEL FASTENER
SURFACE TREATMENT ZINC FASTENER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE FASTENER
THREAD SERIES DESIGNATOR UNC
100 available. NSN 5305012761624
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