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National Stock Number:
5305-01-598-8857
Federal Supply Class:
5305
National Item Identification Number:
015988857
Description:
SCREW,TAPPING
Detail:
A hardened externally threaded fastener whose thread extends to the bearing surface of the head. The thread may be fluted or otherwise designed to cut or form its own mating thread. Excludes SCREW, ASSEMBLED WASHER.
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Manufacturer Information:
| 90096A537 | 39428 | MCMASTER-CARR SUPPLY CO |
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Techincal Specification:
| EXTENDED WASHER DIAMETER | 0.520 INCHES NOMINAL | | EXTENDED WASHER THICKNESS | 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM | | FASTENER LENGTH | 0.500 INCHES NOMINAL | | HARDNESS RATING | 33.0 ROCKWELL C MINIMUM OVERALL | | HEAD HEIGHT | 0.240 INCHES NOMINAL | | HEAD STYLE | HEXAGON EXTENDED WASHER | | INTERNAL DRIVE STYLE | SLOT | | MATERIAL | STEEL OVERALL | | NONMACHINE NOMINAL THREAD DIAMETER | 0.250 INCHES | | NONMACHINE THREAD STYLE | NARROW FLUTE (TYPE E) | | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,TAPPING | | SPECIAL FEATURES | TYPE F;FULLY THREADED;1/4 X 20 | | WIDTH BETWEEN FLATS | 0.187 INCHES NOMINAL | | SURFACE TREATMENT | ZINC OVERALL |
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