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National Stock Number:
5306-01-162-0017
Federal Supply Class:
5306
National Item Identification Number:
011620017
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:
| 12315741 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.438 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.395 INCHES MINIMUM AND | | 0.505 INCHES MAXIMUM | | FASTENER LENGTH | 0.495 INCHES MINIMUM AND | | 0.505 INCHES MAXIMUM | | MATERIAL | STEEL COMP 1018 OR | | STEEL COMP 1019 OR | | STEEL COMP 1020 OR | | STEEL COMP 1022 OR | | STEEL COMP 1025 OR | | STEEL COMP 1212 OR | | STEEL COMP 1213 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL | | SURFACE TREATMENT | COPPER OR | | TIN OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-14550 CL 2 MIL SPEC 1ST TREATMENT RESPONSE OR | | MIL-T-10727 TY 1 MIL SPEC 2ND TREATMENT RESPONSE OVERALL | | STYLE DESIGNATOR | COUNTERBORE THREADED | | CONCENTRIC HOLE DIAMETER | 0.174 INCHES MINIMUM AND | | 0.180 INCHES MAXIMUM | | THREAD SERIES | UNS COUNTERBORE | | NOMINAL THREAD SIZE | 0.438 INCHES COUNTERBORE | | THREADS PER INCH | 24 COUNTERBORE | | INTERNAL THREAD CLASS | 2B COUNTERBORE | | INTERNAL THREAD DIRECTION | RIGHT-HAND COUNTERBORE | | INTERNAL THREAD LENGTH | 0.250 INCHES MINIMUM COUNTERBORE | | HEAD STYLE | HEXAGON | | HEAD HEIGHT | 0.370 INCHES MINIMUM AND | | 0.380 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.615 INCHES MINIMUM AND | | 0.625 INCHES MAXIMUM | | SPECIAL FEATURES | PAC SFTT IS FOR STL MATL ONLY |
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