SCREW
P/N NAS1133E18
NSN 5305 01 081 9472
MFG SPS TECHNOLOGIES
 
NEW GOV SURPLUS
SUPPLIER CAGE CODE 03EF7
 
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                           0.251 INCHES MINIMUM AND 0.301 INCHES MAXIMUM    
FASTENER LENGTH                         1.386 INCHES MINIMUM AND 1.416 INCHES MAXIMUM    
HEAD STYLE                              PAN                                              
HEAD DIAMETER                           0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM    
HEAD HEIGHT                             0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM    
GRIP DIAMETER                           0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM  
INTERNAL DRIVE STYLE                    OFFSET CRUCIFORM (TORQUE SET)                    
NOMINAL THREAD DIAMETER                 0.190 INCHES                                     
GRIP LENGTH                             1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM    
THREAD QUANTITY PER INCH                32                                               
MINIMUM TENSILE STRENGTH                160000 POUNDS PER SQUARE INCH                    
SURFACE FINISH                          32.0 MICROINCHES BEARING SURFACE OF HEAD 32.0    
                                        MICROINCHES GRIP 32.0 MICROINCHES THREADS        
MATERIAL                                IRON ALLOY 660 OVERALL                           
MATERIAL DOCUMENT AND                   AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CLASSIFICATION                                                                           
SURFACE TREATMENT                       PASSIVATE OVERALL                                
SURFACE TREATMENT DOCUMENT              QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
AND CLASSIFICATION                                                                       
THREAD SERIES DESIGNATOR                UNJF                                             
SPECIFICATION/STANDARD DATA             80205-NAS1133 PROFESSIONAL/INDUSTRIAL ASSOCIATION
                                        STANDARD