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National Stock Number:
5305-01-225-7723
Federal Supply Class:
5305
National Item Identification Number:
012257723
Description:
SCREW,CAP,HEXAGON HEAD
Detail:
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; and SCREW, CAP, SOCKET HEAD.
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Manufacturer Information:
| M1222RN4C212SANN | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | MIL-DTL-1222 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | MIL-S-1222 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| FASTENER LENGTH | 0.720 INCHES MINIMUM AND 0.770 INCHES MAXIMUM | | HEAD HEIGHT | 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 384 OVERALL | | MINIMUM TENSILE STRENGTH | 75000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | NONDEFINITIVE SPEC/STD DATA | 1 TYPE | | WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTMA380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 2A | | THREAD LENGTH | 0.620 INCHES MINIMUM AND 0.770 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 20 |
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