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National Stock Number:
5306-01-387-3803
Federal Supply Class:
5306
National Item Identification Number:
013873803
Description:
BOLT,CLOSE TOLERANCE
Detail:
An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (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 not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see BOLT, SHEAR. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see BOLT, MACHINE.
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Manufacturer Information:
| 03A098-6-37 | 1W025 | NORTHROP GRUMMAN SYSTEMS CORP | | 03A098-6-37 | 76823 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | AIC1653-6-37 | 06725 | SPS TECHNOLOGIES, LLC | | DF33003-6-37 | 17446 | HUCK INTERNATIONAL, INC | | 123709-6-37 | 80539 | SPS TECHNOLOGIES, LLC | | DF33003-6-37 | 97928 | HUCK INTL INC | | VCJ0001-6-37 | 06710 | VALLEY-TODECO, INC. | | PBF1420-6-37 | 27624 | SPS TECHNOLOGIES LLC | | SII1188-6-37 | 57928 | SONIC INDUSTRIES, INC. | | MB209-6-37 | 73197 | HI-SHEAR CORPORATION | | VS3319-6-37 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | MB209-6-37 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.516 INCHES NOMINAL | | FASTENER LENGTH | 2.813 INCHES MINIMUM AND | | 2.843 INCHES MAXIMUM | | MATERIAL | NICKEL ALLOY 718 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | HEAD STYLE | SPLINE DRIVE SHEAR HEAD | | HEAD HEIGHT | 0.200 INCHES MINIMUM AND | | 0.220 INCHES MAXIMUM | | HEAD MINOR DIAMETER | 0.575 INCHES MINIMUM | | GRIP LENGTH | 2.302 INCHES MINIMUM AND | | 2.322 INCHES MAXIMUM | | GRIP DIAMETER | 0.3735 INCHES MINIMUM AND | | 0.3745 INCHES MAXIMUM |
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