|
|
|
National Stock Number:
5305-01-192-1429
Federal Supply Class:
5305
National Item Identification Number:
011921429
Description:
SCREW,CLOSE TOLERANCE
Detail:
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.
|
Manufacturer Information:
| 3M945-12D57 | 76301 | THE BOEING COMPANY | | HT4073-12D57 | 73197 | HI-SHEAR CORPORATION | | HT4073-12D57 | 80539 | SPS TECHNOLOGIES, LLC | | HT4073-12D57 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4073-12D57 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
|
Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.750 INCHES | | THREAD QUANTITY PER INCH | 16 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.552 INCHES MINIMUM AND | | 0.592 INCHES MAXIMUM | | FASTENER LENGTH | 4.124 INCHES MINIMUM AND | | 4.144 INCHES MAXIMUM | | MATERIAL | STEEL COMP XM-13 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | PAN NO. 2 | | HEAD DIAMETER | 1.170 INCHES MINIMUM AND | | 1.190 INCHES MAXIMUM | | HEAD HEIGHT | 0.300 INCHES MINIMUM AND | | 0.320 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | GRIP LENGTH | 3.552 INCHES MINIMUM AND | | 3.572 INCHES MAXIMUM | | GRIP DIAMETER | 0.7485 INCHES MINIMUM AND | | 0.7490 INCHES MAXIMUM | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.999 INCHES MINIMUM AND | | 4.029 INCHES MAXIMUM FIRST HOLE | | SHANK UNTHREADED HOLE DIAMETER | 0.141 INCHES MINIMUM AND | | 0.146 INCHES MAXIMUM FIRST HOLE |
|
|