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National Stock Number:
5306-00-987-8621
Federal Supply Class:
5306
National Item Identification Number:
009878621
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:
| 47-620-485-9 | 97499 | BELL TEXTRON INC |
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Techincal Specification:
| CONCENTRIC HOLE DEPTH | 0.620 INCHES NOMINAL | | CONCENTRIC HOLE DIAMETER | 0.188 INCHES MINIMUM AND 0.189 INCHES MAXIMUM | | FASTENER LENGTH | 1.190 INCHES NOMINAL | | HARDNESS RATING | 91.0 ROCKWELL B MINIMUM AND 98.0 ROCKWELL B MAXIMUM OVERALL | | HEAD HEIGHT | 0.220 INCHES NOMINAL | | HEAD STYLE | HEXAGON | | HOLE DIAMETER | 0.062 INCHES NOMINAL | | HOLE CONFIGURATION STYLE | HEXAGON FLATS | | HOLE QUANTITY | 6 | | HOLE TYPE | DRILLED | | MATERIAL | STEEL COMP 1212 OVERALL | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SHOULDER DIAMETER | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM | | SHOULDER LENGTH | 0.560 INCHES NOMINAL | | SPECIAL FEATURES | 0.245 IN TO 0.250 IN DIA BY 0.060 IN FILLET RADIUS BY 0.190 IN LG UNDERCUT FOR THD RELIEF | | WIDTH BETWEEN FLATS | 0.625 INCHES NOMINAL | | STYLE DESIGNATOR | CONCENTRIC HOLE UNTHREADED | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.440 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNF |
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