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National Stock Number:
5306-01-541-5273
Federal Supply Class:
5306
National Item Identification Number:
015415273
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:
| 122897L4-19 | 56878 | SPS TECHNOLOGIES, LLC | | 122897L4-19 | 80539 | SPS TECHNOLOGIES, LLC | | AIC763L4-19 | 06725 | SPS TECHNOLOGIES, LLC | | GS1032-L4-19 | 1EM77 | B & B SPECIALTIES INC | | HP7753L4-19 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | MB156L4-19 | 73197 | HI-SHEAR CORPORATION | | MB156L4-19 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | PBF1267L4-19 | 0PTK6 | SPS TECHNOLOGIES INC | | PBF1267L4-19 | 27624 | SPS TECHNOLOGIES LLC | | PBF1267L4-19 | 56878 | SPS TECHNOLOGIES, LLC | | PBF1267L4-19 | 80539 | SPS TECHNOLOGIES, LLC | | S343L4-19 | 17446 | HUCK INTERNATIONAL, INC | | SLB255-L4-19 | 16258 | SPACE-LOK, INC. | | ST3M753L4-19 | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | ST3M753L4-19 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | ST3M753L4-19 | 76301 | THE BOEING COMPANY | | VFK600L4-19 | 06710 | VALLEY-TODECO, INC. | | VS3190L4-19 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| EXTENDED WASHER DIAMETER | 0.465 INCHES NOMINAL | | EXTENDED WASHER THICKNESS | 0.036 INCHES NOMINAL | | FASTENER LENGTH | 1.438 INCHES NOMINAL | | GRIP DIAMETER | 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM | | GRIP LENGTH | 1.188 INCHES NOMINAL | | HEAD HEIGHT | 0.250 INCHES NOMINAL | | HEAD MINOR DIAMETER | 0.312 INCHES NOMINAL | | HEAD STYLE | SPLINE EXTENDED WASHER | | PART NAME ASSIGNED BY CONTROLLING AGENCY | INAVY: BOLT, CLOSE TOLERANCE; DWG: BOLT - CLOSE TOELRANCE, SPLINE, GLANGE HEAD, 220 KSI, FTU, CRES | | MATERIAL DOCUMENT AND CLASSIFICATION | PH13-8MO PER AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SPECIAL FEATURES | UNDRILLED HEAD AND THREADS; WRENCHING ELEMENT NO. 10 | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.468 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNJF |
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