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National Stock Number: 5306-00-800-0939
Federal Supply Class: 5306
National Item Identification Number: 008000939
Description: BOLT,INTERNAL WRENCHING
Detail: An externally threaded fastener whose threaded portion is of one nominal diameter, No. 10 (0.190 IN.) (5 mm) or larger. It is designed with an internal socket or internal multiple spline for use with an internal driver. The head is beveled (conical) or cylindrical in shape. Items with cylindrical shaped heads must have an externally relieved body. A locking feature may be incorporated in the design of the head or threads. See also SCREW, CAP, SOCKET HEAD. Excludes SETSCREW; SCREW, SHOULDER; BOLT, SHOULDER; SCREW, EXTERNALLY RELIEVED BODY; BOLT, EXTERNALLY RELIEVED BODY; and SCREW, MACHINE.
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Manufacturer Information:
9156690 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
THREAD SERIES DESIGNATOR | UNC | NOMINAL THREAD DIAMETER | 0.250 INCHES | THREAD QUANTITY PER INCH | 20 | THREAD CLASS | 3A | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 0.200 INCHES MINIMUM | FASTENER LENGTH | 0.560 INCHES NOMINAL | MATERIAL | STEEL COMP 302 OR | | STEEL COMP 303 OR | | STEEL COMP 304 OR | | STEEL COMP 305 OR | | STEEL COMP 310 OR | | STEEL COMP 316 OVERALL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED SPEC ALL MATERIAL RESPONSES OR | | QQ-W-423 FED SPEC ALL MATERIAL RESPONSES OVERALL | SURFACE TREATMENT | PASSIVATE OVERALL | HEAD STYLE | FLAT CHAMFER | HEAD DIAMETER | 0.371 INCHES MINIMUM | HEAD HEIGHT | 0.247 INCHES MINIMUM | INTERNAL DRIVE STYLE | HEXAGON | WIDTH ACROSS FLATS | 0.187 INCHES NOMINAL | FIRST DIAMETER FROM HEAD | 0.185 INCHES NOMINAL | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.180 INCHES NOMINAL |
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