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National Stock Number:
5305-01-332-3168
Federal Supply Class:
5305
National Item Identification Number:
013323168
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:
| 0.250-20UNC-2AX1.250 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 0.250-20UNC-2AX1.250 IN. LG NICU | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | | 845-5770309 ASSEMBLY 11-A | 53711 | NAVAL SEA SYSTEMS COMMAND | | FF-S-86 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC | | M1222SN4C220NCNN | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.989 INCHES MINIMUM AND | | 1.089 INCHES MAXIMUM | | FASTENER LENGTH | 1.250 INCHES NOMINAL | | MATERIAL | NICKEL ALLOY K-500 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-286,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MINIMUM TENSILE STRENGTH | 130000 POUNDS PER SQUARE INCH | | MINIMUM YIELD STRENGTH | 90000 POUNDS PER SQUARE INCH | | HEAD STYLE | FLAT COUNTERSUNK | | HEAD DIAMETER | 0.480 INCHES MINIMUM AND | | 0.531 INCHES MAXIMUM | | COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND | | 84.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | HEXAGON | | WIDTH ACROSS FLATS | 0.156 INCHES NOMINAL | | NONDEFINITIVE SPEC/STD DATA | 6 TYPE | | SPEC/STD CONTROLLING DATA | | | MANUFACTURERS CODE | 81348 | | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | FF-S-86 | | MANUFACTURERS CODE | 81349 | | DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | M1222SN4C220NCNN |
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