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National Stock Number:
5305-00-170-2952
Federal Supply Class:
5305
National Item Identification Number:
001702952
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.
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Manufacturer Information:
| 106712-3-3T | 80539 | SPS TECHNOLOGIES, LLC | | BM19051-3-3 | 97928 | HUCK INTL INC | | GB510AE3-3T | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | GB510AE3-3T | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT8138-3-3T | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT8138-3-3T | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| GRIP LENGTH | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM | | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL | | HEAD DIAMETER | 0.350 INCHES MINIMUM AND 0.381 INCHES MAXIMUM | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | SHANK UNTHREADED HOLE DIAMETER | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM FIRST HOLE | | THREAD LENGTH | 0.313 INCHES MINIMUM AND 0.380 INCHES MAXIMUM |
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