|
|
|
National Stock Number:
5305-01-494-8236
Federal Supply Class:
5305
National Item Identification Number:
014948236
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:
| 11925C7-18D | 59563 | REID PRODUCTS INC. | | HT4020-7-18 | 0PTK6 | SPS TECHNOLOGIES INC | | HT4020-7-18 | 73197 | HI-SHEAR CORPORATION | | HT4020-7-18 | 80539 | SPS TECHNOLOGIES, LLC | | HT4020-7-18 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4020-7-18 | 97928 | HUCK INTL INC | | ST3M652C7-18D | 76301 | THE BOEING COMPANY | | HT4020-7-18 | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | HT4020-7-18 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
|
Techincal Specification:
| FASTENER LENGTH | 1.745 INCHES MINIMUM AND 1.822 INCHES MAXIMUM | | GRIP DIAMETER | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM | | GRIP LENGTH | 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM | | HEAD DIAMETER | 0.881 INCHES MINIMUM AND 0.888 INCHES MAXIMUM | | HEAD HEIGHT | 0.130 INCHES MINIMUM AND 0.133 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK UNDERCUT | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | NOMINAL THREAD DIAMETER | 0.438 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.630 INCHES MINIMUM AND 0.697 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 |
|
|