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National Stock Number:
5306-01-226-9462
Federal Supply Class:
5306
National Item Identification Number:
012269462
Description:
BOLT,INTERNALLY RELIEVED BODY
Detail:
An externally threaded fastener whose external threaded portion is of one nominal diameter. It has a concentric hole along the longitudinal centerline which may extend a part or the full length of the bolt. The concentric hole along the centerline may be counterbored and/or internally threaded at the head end or the bolt end. The head is designed to be held or driven by an external and/or internal driver. For items having a hole(s) perpendicular to the axis which meet the concentric hole along the longitudinal centerline, see BOLT, FLUID PASSAGE.
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Manufacturer Information:
| MNP-306 PIECE 4 | 0FCV0 | KEYSTONE INTL INC | | NMP-306 PIECE 4 | 75954 | KUNKLE INDUSTRIES INC LONERGAN VALVE DIV | | S4824H3129390 PIECE 4 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| CONCENTRIC HOLE DIAMETER | 0.406 INCHES NOMINAL | | COUNTERBORE DEPTH | 0.094 INCHES NOMINAL | | COUNTERBORE DIAMETER | 0.422 INCHES NOMINAL | | FASTENER LENGTH | 2.500 INCHES NOMINAL | | HEAD HEIGHT | 0.250 INCHES NOMINAL | | HEAD STYLE | HEXAGON | | INTERNAL THREAD CLASS | 2B COUNTERBORE | | INTERNAL THREAD DIRECTION | RIGHT-HAND COUNTERBORE | | INTERNAL THREAD LENGTH | 0.261 INCHES NOMINAL COUNTERBORE | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 303 OVERALL | | III PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | PROPRIETARY CHARACTERISTICS | MRCS | | NOMINAL THREAD SIZE | 0.250 INCHES COUNTERBORE | | NOMINAL THREAD DIAMETER | 0.750 INCHES | | WIDTH BETWEEN FLATS | 0.750 INCHES NOMINAL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 2.500 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 10 | | THREAD SERIES DESIGNATOR | UNC | | THREAD SERIES | UNC COUNTERBORE | | THREADS PER INCH | 20 COUNTERBORE |
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