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National Stock Number:
5305-01-626-0472
Federal Supply Class:
5305
National Item Identification Number:
016260472
Description:
SCREW,CAP,SOCKET HEAD
Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.
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Manufacturer Information:
| 90128A241 | 39428 | MCMASTER-CARR SUPPLY CO |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.25 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.3750 INCHES NOMINAL | | FASTENER LENGTH | 0.3750 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | HARDNESS RATING | 47.0 ROCKWELL C MINIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 170000 POUNDS PER SQUARE INCH | | HEAD STYLE | KNURLED NO. 1 | | HEAD DIAMETER | 0.3750 INCHES NOMINAL | | HEAD HEIGHT | 0.250 INCHES NOMINAL | | INTERNAL DRIVE STYLE | HEXAGON | | WIDTH ACROSS FLATS | 0.1875 INCHES NOMINAL | | SPECIAL FEATURES | MATERIAL: STRONGER THAN GRADE 8 ALLOY STEEL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | SOCKET HEAD CAP SCREW 1/4"-20 |
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