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National Stock Number:
5305-01-248-1358
Federal Supply Class:
5305
National Item Identification Number:
012481358
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:
| 8MMX20MMDIN931-8.8BN56 | 77250 | ALLIED PRODUCTS CORP PHEOLL MFG CO DIV | | 8X20DIN931-8.8BN56 | 77250 | ALLIED PRODUCTS CORP PHEOLL MFG CO DIV |
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Techincal Specification:
| HARDNESS RATING | 18.0 ROCKWELL C MINIMUM OVERALL AND 31.0 ROCKWELL C MAXIMUM OVERALL | | HEAD HEIGHT | 5.5 MILLIMETERS NOMINAL | | HEAD STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | DIN931 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL PROPERTY CLASS 8.8 OVERALL | | PROPRIETARY CHARACTERISTICS | PACS | | MINIMUM TENSILE STRENGTH | 113784 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 8.0 MILLIMETERS | | WIDTH BETWEEN FLATS | 13.0 MILLIMETERS NOMINAL | | SURFACE TREATMENT | ZINC OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 17.5 MILLIMETERS NOMINAL | | THREAD SERIES DESIGNATOR | M | | THREAD PITCH IN MILLIMETERS | 1.25 | | EXTERNAL THREAD TOLERANCE CLASS | 6G | | FASTENER LENGTH | 20.00 MILLIMETERS NOMINAL | | FEATURES PROVIDED | FINISHED HEAD |
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