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National Stock Number: 5306-01-242-8555
Federal Supply Class: 5306
National Item Identification Number: 012428555
Description: BOLT,RIBBED SHOULDER
Detail: An externally threaded fastener whose threaded portion is of one nominal diameter. It has a series of longitudinal ribs, splines or serrations on all or a part of the shoulder. The minor diameter of the ribs must be greater than the major diameter of the threads. See also BOLT, RIBBED NECK.
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Manufacturer Information:
| 615AS111 | 30003 | NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER |
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Techincal Specification:
| FASTENER LENGTH | 2.500 INCHES NOMINAL | | HEAD DIAMETER | 1.312 INCHES NOMINAL | | HEAD HEIGHT | 0.310 INCHES MINIMUM AND 0.341 INCHES MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | MATERIAL | STEEL COMP 8640 OR STEEL COMP 8740 OR STEEL COMP 3135 OR STEEL COMP 4140 OR STEEL COMP 4135 OVERALL | | NOMINAL THREAD DIAMETER | 0.750 INCHES | | SHOULDER DIAMETER | 0.870 INCHES MINIMUM AND 0.880 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER LENGTH | 0.500 INCHES NOMINAL FIRST SHOULDER | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 ASSN STD 1ST TREATMENT RESPONSE OR MIL-C-81562 MIL SPEC 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ZINC AND CHROMATE OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.090 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 16 | | THREAD SERIES DESIGNATOR | UNF |
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