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National Stock Number:
5305-01-188-5167
Federal Supply Class:
5305
National Item Identification Number:
011885167
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:
| 0N510404-3 | 98230 | NATIONAL SECURITY AGENCY | | 1-4/20UNC-2AX.75LG | 70318 | ALLMETAL SCREW PRODUCTS CORP | | 1/4-20UNC-2AX 0.750LG | 70318 | ALLMETAL SCREW PRODUCTS CORP |
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Techincal Specification:
| FASTENER LENGTH | 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM | | HEAD DIAMETER | 0.419 INCHES MINIMUM AND 0.437 INCHES MAXIMUM | | HEAD HEIGHT | 0.122 INCHES MINIMUM AND 0.132 INCHES MAXIMUM | | HEAD STYLE | ROUND | | INTERNAL DRIVE STYLE | HEXAGON | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SPECIAL FEATURES | COLOR BLACK | | SURFACE TREATMENT | OXIDE OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.620 INCHES MINIMUM AND 0.780 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) | | THREAD QUANTITY PER INCH | 20 | | WIDTH ACROSS FLATS | 0.156 INCHES NOMINAL |
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