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National Stock Number:
5305-14-391-9739
Federal Supply Class:
5305
National Item Identification Number:
143919739
Description:
SCREW,MACHINE
Detail:
(ALL EXCEPT USA) A HEADED EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION MAY EXTEND ON PART OR WHOLE OF ITS SHANK. THE HEAD IS DESIGNED TO BE HELD OR DRIVEN WITH A TOOL. THE THREADED PORTION IS CYLINDRICAL AND ITS DIAMETER 1.6 MM OR MORE. FOR ITEMS WITH DIAMETERS BELOW 1.6 MM SEE SCREW, INSTRUMENT. THE ITEM IS DESIGNED TO BE DRIVEN IN A PREEXISTING MATING SCREWTHREAD OR TO ACCOMMODATE A NUT, INSURING ASSEMBLING OF PARTS, WITH THE PART OPPOSITE THE HEAD ACTING AS A NUT, OR INSURING A GRIP BETWEEN THE BEARING SURFACE OF ITS HEAD AND THAT OF A NUT SCREWED ON ITS END. THE THREADED END MAY HAVE A PILOT FOR EASIER DRIVING INTO A DRILLED HOLE. IF THE POINT IS DESIGNED TO PREVENT OR RESTRICT RELATIVE MOVEMENTS OF PARTS SEE SETSCREW. DO NOT USE IF A MORE SPECIFIC ITEM NAME APPLIES. IF THE ITEM IS FURNISHED WITH ATTACHMENTS SUCH AS NUT(S), WASHER(S), PIN(S), AND THE LIKE, SEE SCREW ASSEMBLY OR BOLT (AS MODIFIED).
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Manufacturer Information:
| NAS517C3-4 | F6117 | DASSAULT AVIATION |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 16.35 MILLIMETERS MINIMUM AND 17.55 MILLIMETERS MAXIMUM | | HEAD DIAMETER | 8.56 MILLIMETERS MINIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE II | | MINIMUM TENSILE STRENGTH | 540 MEGAPASCALS | | MINIMUM YIELD STRENGTH | 220 MEGAPASCALS | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | F3025 AIR 9160C MIL STD 1ST MATERIAL RESPONSE OR F3025 AIR 9160C MIL STD 2ND MATERIAL RESPONSE OR NF A 35-573 NATIONAL SPEC 3RD MATERIAL RESPONSE | | SCREW MATERIAL | STEEL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 10.3 MILLIMETERS NOMINAL | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNF |
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