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National Stock Number:
5306-00-935-7558
Federal Supply Class:
5306
National Item Identification Number:
009357558
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:
| B3522-20 | 16128 | GICHNER SYSTEMS GROUP INC GICHNER MOBILIZER DIV | | B3522-20 | 29381 | GICHNER SYSTEMS GROUP, INC. |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.750 INCHES | | THREAD QUANTITY PER INCH | 10 | | THREAD CLASS | 3A | | THREAD DIRECTION | LEFT-HAND | | THREAD LENGTH | 1.058 INCHES MINIMUM AND | | 1.068 INCHES MAXIMUM | | FASTENER LENGTH | 1.375 INCHES NOMINAL | | MATERIAL | STEEL COMP 1144 OR | | STEEL COMP 4140 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD 1ST MATERIAL RESPONSE OR | | 66 FED STD 2ND MATERIAL RESPONSE OVERALL | | HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND | | 35.0 ROCKWELL C MAXIMUM OVERALL | | STYLE DESIGNATOR | CONCENTRIC HOLE THREADED | | SHOULDER DIAMETER | 1.240 INCHES MINIMUM AND | | 1.250 INCHES MAXIMUM | | SHOULDER LENGTH | 0.062 INCHES MINIMUM AND | | 0.067 INCHES MAXIMUM | | CONCENTRIC HOLE DEPTH | 1.250 INCHES MINIMUM AND | | 1.375 INCHES MAXIMUM | | CONCENTRIC HOLE DIAMETER | 0.250 INCHES NOMINAL | | THREAD SERIES | UNF CONCENTRIC HOLE | | NOMINAL THREAD SIZE | 0.250 INCHES CONCENTRIC HOLE | | THREADS PER INCH | 28 CONCENTRIC HOLE | | HEAD STYLE | HEXAGON | | HEAD HEIGHT | 0.188 INCHES NOMINAL | | WIDTH BETWEEN FLATS | 2.000 INCHES NOMINAL | | SPECIAL FEATURES | CONCENTRIC HOLE THREAD IS LEFT HAND | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 16128 | | DESIGN CONTROL REFERENCE | B3522-20 |
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