5305-01-658-3431 Parts Inventory

Close Tolerance Screw
Federal Supply Class Screws
National Stock Number 5305-01-658-3431
Item Name Code 29294
Part Numbers NAS1790-4-9
Serial Number 016583431
Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER 0.250 INCHES
THREAD QUANTITY PER INCH 28.0
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.425 INCHES NOMINAL
FASTENER LENGTH 0.9875 INCHES NOMINAL
MATERIAL STEEL COMP 4140 OR
STEEL COMP 4340 OR
STEEL COMP 8740 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION AMS6349 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT CADMIUM AND
CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION AMS-QQ-P TYPE II, CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLE FLAT COUNTERSUNK
HEAD DIAMETER 0.464 INCHES MINIMUM
COUNTERSINK ANGLE 99.0 DEGREES MINIMUM AND
101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH 0.5625 INCHES NOMINAL
GRIP DIAMETER 0.2485 INCHES MINIMUM AND
0.2495 INCHES MAXIMUM
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER 0.8815 INCHES MINIMUM FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER 0.076 INCHES MINIMUM AND
0.086 INCHES MAXIMUM FIRST HOLE
III PART NAME ASSIGNED BY CONTROLLING AGENCY BOLT 100 DEGREE FLUSH HEAD

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