BOLT
P/N 8028381-01
NSN 5306 01 113 8254
MFG WARNER ROBBINS

NEW GOV SURPLUSSUPPLIER CAGE CODE 03EF7

 

ITEM NAME:   BOLT,CLOSE TOLERANC

DEFINITION:  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.

            

 

CHARACTERISTIC                          VALUE

THREAD CLASS                            3A                                               

THREAD DIRECTION                        RIGHT-HAND                                       

THREAD LENGTH                           0.795 INCHES MINIMUM AND 0.855 INCHES MAXIMUM    

FASTENER LENGTH                         6.328 INCHES NOMINAL                              

HEAD STYLE                              HEXAGON                                          

HEAD HEIGHT                             0.188 INCHES NOMINAL                             

WIDTH BETWEEN FLATS                     0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM    

GRIP DIAMETER                           0.3730 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM  

NOMINAL THREAD DIAMETER                 0.375 INCHES                                     

GRIP LENGTH                             5.503 INCHES NOMINAL                             

THREAD QUANTITY PER INCH                16                                               

MATERIAL                                STEEL CORROSION RESISTING OVERALL                

MATERIAL DOCUMENT AND                   AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

CLASSIFICATION                                                                           

SURFACE TREATMENT                       CADMIUM OVERALL                                  

DESIGN CONTROL REFERENCE                8028381-01                                       

THE MANUFACTURERS DATA                  98752                                            

MANUFACTURERS CODE                                                                       

SURFACE TREATMENT DOCUMENT              8837 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL  

AND CLASSIFICATION                                                                       

THREAD SERIES DESIGNATOR                UNJF