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National Stock Number:
5306-01-606-0727
Federal Supply Class:
5306
National Item Identification Number:
016060727
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:
| 122897L4-17 | 0PTK6 | SPS TECHNOLOGIES INC | | 122997L4-17 | 56878 | SPS TECHNOLOGIES, LLC | | AIC753L4-17 | 06725 | SPS TECHNOLOGIES, LLC | | HP7753L4-17 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | GS1032L4-17 | 1EM77 | B & B SPECIALTIES INC | | 122997L4-17 | 80539 | SPS TECHNOLOGIES, LLC | | VFK500L4-17 | 06710 | VALLEY-TODECO, INC. | | SLB255L4-17 | 16258 | SPACE-LOK, INC. | | S343L4-17 | 17446 | HUCK INTERNATIONAL, INC | | ST3M752L4-17 | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | PBF1287L4-17 | 27624 | SPS TECHNOLOGIES LLC | | ST3M753L4-17 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | V83190L4-17 | 73197 | HI-SHEAR CORPORATION | | ST3M753L4-17 | 76301 | THE BOEING COMPANY | | VS3190L4-17 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.468 INCHES NOMINAL | | FASTENER LENGTH | 1.515 INCHES MINIMUM AND | | 1.545 INCHES MAXIMUM | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5829,PH13 - 8MO ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | LUBRICANT AND | | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-B-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER | | HEAD HEIGHT | 0.250 INCHES NOMINAL | | WIDTH BETWEEN FLATS | 0.297 INCHES MINIMUM AND | | 0.312 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.460 INCHES MINIMUM AND | | 0.470 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.036 INCHES NOMINAL | | GRIP LENGTH | 1.000 INCHES NOMINAL | | GRIP DIAMETER | 0.2490 INCHES MINIMUM AND | | 0.2495 INCHES MAXIMUM | | SPECIAL FEATURES | FATIQUE LOADING HI-RANGE IS 4440 LBS | | CRITICALITY CODE JUSTIFICATION | AGAV | | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT-CLOSE TOL,SPLINE DRIVE,FLANGE HD (220 KSI) CRES |
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