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National Stock Number:
5305-01-043-1371
Federal Supply Class:
5305
National Item Identification Number:
010431371
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:
| BM19045-4-19 | 17446 | HUCK INTERNATIONAL, INC | | BM19045-4-19 | 97928 | HUCK INTL INC | | GB510FG4-19 | 06710 | VALLEY-TODECO, INC. | | GB510N4A19 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | GB510FG4-19 | 27624 | SPS TECHNOLOGIES LLC | | HT326-4A19 | 73197 | HI-SHEAR CORPORATION | | SFH22D4A19 | 56878 | SPS TECHNOLOGIES, LLC | | SFH22D4A19 | 80539 | SPS TECHNOLOGIES, LLC | | HT8181F4-19 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT326-4A19 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | MATERIAL | STEEL COMP H11 OVERALL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | SPECIFICATION/STANDARD DATA | 26512-GB510N MANUFACTURERS STANDARD | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | NAS 672 ASSN STD 1ST TREATMENT RESPONSE OR MIL-C-8837 TY 2 CL 2 MIL SPEC 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OR CADMIUM AND CHROMATE OVERALL | | THREAD SERIES DESIGNATOR | UNJF |
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