NSN 5305-00-153-7691
Part Details | CLOSE TOLERANCE SCREW
5305-00-153-7691 A SCREW, MACHINE or SCREW, CAP, SOCKET HEAD whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 IN.) (0.025 mm) or less of a specific diameter for items (1.000 IN.) (25 mm) or less in diameter. Items over (1.000 IN.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 IN.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 IN.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.
Alternate Parts: HT403A721, HT403A7-21, HT403A721, HT403A7-21, 3M47721, 3M47-7-21, 5305-00-153-7691, 00-153-7691, 5305001537691, 001537691
Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
---|---|---|---|
53 | JAN 19, 1973 | 00-153-7691 | 29294 ( SCREW, CLOSE TOLERANCE ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-00-153-7691
Part Number | Cage Code | Manufacturer |
---|---|---|
HT403A7-21 | C4293 | ALCOA FASTENING SYSTEMSFAIRCHILDFASTENERS EUROPE - VSD GMBH |
HT403A7-21 | 92215 | ARCONIC GLOBAL FASTENERS & RINGS,INC. |
3M47-7-21 | 76301 | BOEING COMPANY, THEDBA BOEING |
Technical Data | NSN 5305-00-153-7691
Characteristic | Specifications |
---|---|
THREAD SERIES DESIGNATOR | UNF |
NOMINAL THREAD DIAMETER | 0.438 INCHES |
THREAD QUANTITY PER INCH | 20 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.530 INCHES MINIMUM AND 0.697 INCHES MAXIMUM |
FASTENER LENGTH | 1.952 INCHES MINIMUM AND 1.999 INCHES MAXIMUM |
MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
HEAD STYLE | 1 HEXAGON COUNTERSUNK |
HEAD DIAMETER | 0.881 INCHES MINIMUM AND 0.888 INCHES MAXIMUM |
HEAD HEIGHT | 0.130 INCHES MINIMUM AND 0.133 INCHES MAXIMUM |
COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
INTERNAL DRIVE STYLE | HIGH-TORQUE |
GRIP LENGTH | 1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM |
GRIP DIAMETER | 0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM |
SPECIAL FEATURES | FURNISHED W/1 PREFORMED PACKING |