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National Stock Number:
5306-01-477-5788
Federal Supply Class:
5306
National Item Identification Number:
014775788
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:
| 11823-7D21 | 59563 | REID PRODUCTS INC. | | 122895-7D21 | 56878 | SPS TECHNOLOGIES, LLC | | AIC687-7D21 | 06725 | SPS TECHNOLOGIES, LLC | | GS1015-7D21 | 1EM77 | B & B SPECIALTIES INC | | PBF1265-7D21 | 27624 | SPS TECHNOLOGIES LLC | | 122895-7D21 | 80539 | SPS TECHNOLOGIES, LLC | | VCG0001-7D21 | 06710 | VALLEY-TODECO, INC. | | VS3174-7D21 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M744-7D21 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | SLB748-7D21 | 16258 | SPACE-LOK, INC. | | VS3174-7D21 | 17446 | HUCK INTERNATIONAL, INC | | ST3M744-7D21 | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | ST3M744-7D21 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | ST3M744-7D21 | 76301 | THE BOEING COMPANY | | WC744-7D21 | 60516 | WEST COAST AEROSPACE, INC. | | VS3174-7D21 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.631 INCHES MINIMUM AND 1.641 INCHES MAXIMUM FIRST HOLE | | FASTENER LENGTH | 1.756 INCHES MINIMUM AND 1.776 INCHES MAXIMUM | | GRIP LENGTH | 1.313 INCHES NOMINAL | | GRIP DIAMETER | 0.671 INCHES MINIMUM AND 0.703 INCHES MAXIMUM | | HEAD HEIGHT | 0.257 INCHES MINIMUM | | HEAD MINOR DIAMETER | 0.711 INCHES MINIMUM AND 0.717 INCHES MAXIMUM | | HEAD STYLE | SPLINE DRIVE SHEAR HEAD | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP XM-13 OVERALL | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.4375 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | SBOLT-CLOSE TOLERANCE, SPLINE DRIVE, CRES (125 KSI FSU)DRILLED, SHORT THREAD | | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.453 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 20 |
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