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National Stock Number:
5306-01-341-2252
Federal Supply Class:
5306
National Item Identification Number:
013412252
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:
| SS5025-08-003 | 06725 | SPS TECHNOLOGIES, LLC | | SS5025-08-003 | 0UCY9 | M.S. AEROSPACE INC. | | SS5025-08-003 | 27624 | SPS TECHNOLOGIES LLC | | SS5025-08-003 | 56878 | SPS TECHNOLOGIES, LLC | | SS5025-08-003 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| FASTENER LENGTH | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM | | GRIP DIAMETER | 0.4985 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM | | GRIP LENGTH | 0.125 INCHES NOMINAL | | HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM FASTENER | | HEAD HEIGHT | 0.281 INCHES NOMINAL | | HEAD MINOR DIAMETER | 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM | | HEAD STYLE | SPLINE DRIVE SHEAR HEAD | | LOCKING FEATURE | PATCH LOCKING FEATURE | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-8844 MIL SPEC SINGLE MATERIAL RESPONSE FASTENER | | MATERIAL | PLASTIC POLYAMIDE LOCKING FEATURESTEEL COMP 4340 FASTENER | | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER | | SURFACE TREATMENT | CADMIUM AND CHROMATE FASTENER | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.063 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 20 |
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