|
|
|
National Stock Number:
5305-01-172-4264
Federal Supply Class:
5305
National Item Identification Number:
011724264
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:
| 51B220-5 | 76823 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | NAS2842-5T | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |
|
Techincal Specification:
| FASTENER LENGTH | 0.635 INCHES NOMINAL | | GRIP DIAMETER | 0.1621 INCHES MINIMUM AND 0.1627 INCHES MAXIMUM | | GRIP LENGTH | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM | | HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM THREADS | | HEAD DIAMETER | 0.309 INCHES MINIMUM AND 0.326 INCHES MAXIMUM | | HEAD HEIGHT | 0.088 INCHES MINIMUM AND 0.102 INCHES MAXIMUM | | HEAD STYLE | PAN | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 2520 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.1640 INCHES | | SPECIFICATION/STANDARD DATA | 80205-NAS2842 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY II CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.276 INCHES MINIMUM AND 0.323 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJC | | THREAD QUANTITY PER INCH | 32 |
|
|