Close Tolerance Screw
Federal Supply Class | Screws |
National Stock Number | 5305-01-658-3431 |
Item Name Code | 29294 |
Part Numbers | |
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 |
Restrictions