NAS1351C4H6

Part identification

NSN	5305-00-966-8267
NIIN	00-966-8267
FSC	5305
FSG	53
Item Name	Screw, cap, Socket Head
INC	16282
Assigned Date	13-JUN-1966
Status	Active

Technical characteristics

Thread Class	3A
Thread Direction	Right-hand
Thread Length	0.274 inches minimum and 0.375 inches maximum
Fastener Length	0.345 inches minimum and 0.375 inches maximum
Head Style	Flat chamfer
Head Diameter	0.365 inches minimum and 0.375 inches maximum
Head Height	0.244 inches minimum and 0.250 inches maximum
Hole Diameter	0.047 inches nominal
Internal Drive Style	Hexagon
Nominal Thread Diameter	0.250 inches
Width Across Flats	0.187 inches minimum and 0.190 inches maximum
Hole Quantity	6
Hole Type	Drilled
Thread Quantity per Inch	28
Minimum Tensile Strength	80000 pounds per square inch
Hardness Rating	80.0 rockwell B minimum overall
Minimum Yield Strength	30000 pounds per square inch
Hole Configuration Style	Round internal hexagon
Material	Steel comp 302 overall or steel comp 304 overall or steel comp 305 overall or steel comp 316 overall or steel comp 384 overall or steel comp XM-7 overall
Material Document and Classification	66 fed std 1ST material response overall or 6 fed std 2ND material response overall or 66 fed std 3RD material response overall or 66 fed std 4TH material response overall or 66 fed std 5TH material response overall or astm A493 assn std 6TH material response overall
Surface Treatment	Passivate overall
Surface Treatment Document and Classification	QQ-P-35 fed spec single treatment response overall
Thread Series Designator	UNRF
Nondefinitive Spec/STD Data	6 type

Manufacturers

National Aerospace Standards (CAGE 80205) — Type C

National Aerospace Standards (CAGE 80205) — Type C

Alternate part numbers

NAS1351C4H6 (CAGE 80205)

NAS608C4H6 (CAGE 80205)