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National Stock Number:
5306-00-678-4770
Federal Supply Class:
5306
National Item Identification Number:
006784770
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:
| 5306006784770 | SCY13 | E.C.A ETABLISSEMENT CENTRALD'APPROVISIONNEMENT DES FORCES ARMEE | | 8763020 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.060 INCHES MINIMUM AND 0.120 INCHES MAXIMUM | | FASTENER LENGTH | 4.250 INCHES NOMINAL | | FEATURES PROVIDED | CASEHARDENED | | HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL | | HEAD HEIGHT | 0.310 INCHES NOMINAL | | HEAD DIAMETER | 1.310 INCHES NOMINAL | | HEAD STYLE | FLAT CHAMFER | | MATERIAL | STEEL COMP 1340 OR STEEL COMP 4140 OR STEEL COMP 8640 OVERALL | | NOMINAL THREAD DIAMETER | 0.875 INCHES | | RIB LENGTH | 1.040 INCHES MINIMUM AND 1.100 INCHES MAXIMUM | | RIB MAJOR DIAMETER | 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM | | SHOULDER DIAMETER | 0.960 INCHES MINIMUM AND 0.965 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 1.160 INCHES NOMINAL FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.750 INCHES MINIMUM | | THREAD SERIES DESIGNATOR | UNF | | THREAD QUANTITY PER INCH | 14 |
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