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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:
| NONMACHINE THREAD STYLE | NARROW FLUTE (TYPE E) | | NONMACHINE NOMINAL THREAD DIAMETER | 0.250 INCHES | | FASTENER LENGTH | 0.500 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | HARDNESS RATING | 33.0 ROCKWELL C MINIMUM OVERALL | | HEAD STYLE | HEXAGON EXTENDED WASHER | | HEAD HEIGHT | 0.240 INCHES NOMINAL | | WIDTH BETWEEN FLATS | 0.187 INCHES NOMINAL | | EXTENDED WASHER DIAMETER | 0.520 INCHES NOMINAL | | EXTENDED WASHER THICKNESS | 0.030 INCHES MINIMUM AND | | 0.050 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | SLOT | | SPECIAL FEATURES | TYPE F;FULLY THREADED;1/4 X 20 | | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,TAPPING |
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