|
|
National Stock Number: 5306-01-281-3035
Federal Supply Class: 5306
National Item Identification Number: 012813035
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.
|
Manufacturer Information:
NAS1228C9N | 04348 | LAWRENCE ENGINEERING AND SUPPLY INC | NAS1228C9NL1 | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG |
|
Techincal Specification:
CRITICALITY CODE JUSTIFICATION | ZZZY | FASTENER LENGTH | 1.282 INCHES MINIMUM AND 1.312 INCHES MAXIMUM | GRIP LENGTH | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM | GRIP DIAMETER | 0.4990 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM | HEAD HEIGHT | 0.250 INCHES MINIMUM AND 0.265 INCHES MAXIMUM | HEAD STYLE | HEXAGON COUNTERSUNK | LOCKING FEATURE | PELLET THREADS | MATERIAL | STEEL CORROSION RESISTING OVERALL | NOMINAL THREAD DIAMETER | 0.500 INCHES | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS | SPECIFICATION/STANDARD DATA | 80205-NAS1228 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD | SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD | THREAD CLASS | 3A | THREAD LENGTH | 0.735 INCHES NOMINAL | THREAD SERIES DESIGNATOR | UNJF | THREAD QUANTITY PER INCH | 20 |
|
|