SCREW
P/N HT4049-4D14

MFG SPS TECH

NEW GOV SURPLUS
SUPPLIER CAGE CODE 0E3F7

 

ITEM NAME:   SCREW,CLOSE TOLERAN

DEFINITION:  A SCREW, MACHINE or SCREW, CAP, SOCKET HEAD whose unthreaded portion

             is of specified grip length, plated or unplated, and is machined to a

             tolerance of one thousandth (0.001 IN.) (0.025 mm) or less of a

             specific diameter for items (1.000 IN.) (25 mm) or less in diameter.

             Items over (1.000 IN.) (25 mm) in diameter shall have a tolerance of

             fifteen ten thousandths (0.0015 IN.) (0.038 mm) or less. The nominal

             major diameter of the threads shall be at least one thousandth (0.001

             IN.) (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 designed to be held or driven with an inserted

             driver. It is not designed for rotation by the thumb and fingers. A

             locking feature may be incorporated in the design of the head or

             threads.

            

 

CHARACTERISTIC                          VALUE

THREAD CLASS                            3A                                               

THREAD DIRECTION                        RIGHT-HAND                                       

THREAD LENGTH                           0.291 INCHES MINIMUM AND 0.341 INCHES MAXIMUM    

FASTENER LENGTH                         1.176 INCHES MINIMUM AND 1.206 INCHES MAXIMUM    

HEAD STYLE                              FLAT COUNTERSUNK                                 

HEAD DIAMETER                           0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM    

GRIP DIAMETER                           0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM  

SHANK UNTHREADED HOLE                   0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM    

DIAMETER                                FIRST HOLE                                       

INTERNAL DRIVE STYLE                    HIGH-TORQUE                                       

NOMINAL THREAD DIAMETER                 0.250 INCHES                                     

GRIP LENGTH                             0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM    

THREAD QUANTITY PER INCH                28                                               

COUNTERSINK ANGLE                       100.0 DEGREES NOMINAL                            

DISTANCE FROM HEAD LARGEST              1.053 INCHES MINIMUM AND 1.093 INCHES MAXIMUM    

BEARING SURFACE TO SHANK                FIRST HOLE                                       

HOLE CENTER                                                                              

MATERIAL                                STEEL COMP XM-13 OVERALL                         

MATERIAL DOCUMENT AND                   AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

CLASSIFICATION                                                                           

SURFACE TREATMENT                       PASSIVATE OVERALL                                 

THREAD SERIES DESIGNATOR                UNJF