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		                        | National Stock Number:
 5305-01-604-0641
 
 Federal Supply Class:
 5305
 
 National Item Identification Number:
 016040641
 
 Description:
 SCREW,MACHINE
 
 Detail:
 An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below No. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; and SCREW, ASSEMBLED WASHER. See also, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; and SCREW, CAP SOCKET HEAD.
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 Manufacturer Information:
 
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 Techincal Specification:
 
 | FASTENER LENGTH | 12.0 MILLIMETERS NOMINAL |  | HEAD DIAMETER | 5.7 MILLIMETERS MINIMUM AND 6.0 MILLIMETERS MAXIMUM |  | HEAD STYLE | FLAT COUNTERSUNK |  | NOMINAL THREAD DIAMETER | 3.0 MILLIMETERS |  | SCREW MATERIAL | STEEL |  | SCREW SURFACE TREATMENT | ZINC |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 12.0 MILLIMETERS NOMINAL |  | THREAD PITCH IN MILLIMETERS | 0.50 |  | THREAD SERIES DESIGNATOR | ISO M | 
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