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National Stock Number:
5306-00-298-4800
Federal Supply Class:
5306
National Item Identification Number:
002984800
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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Techincal Specification:
| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.060 INCHES NOMINAL | | FASTENER LENGTH | 1.420 INCHES NOMINAL | | FEATURES PROVIDED | CASEHARDENED | | HARDNESS RATING | 5.0 ROCKWELL C MINIMUM OVERALL AND 24.0 ROCKWELL C MAXIMUM OVERALL | | HEAD DIAMETER | 0.820 INCHES NOMINAL | | HEAD HEIGHT | 0.160 INCHES NOMINAL | | HEAD STYLE | PAN NO. 2 | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | MATERIAL | STEEL COMP 1021 OVERALL | | MINIMUM TENSILE STRENGTH | 110000 POUNDS PER SQUARE INCH | | RIB LENGTH | 0.120 INCHES NOMINAL | | RIB MAJOR DIAMETER | 0.618 INCHES MINIMUM AND 0.628 INCHES MAXIMUM | | SHOULDER DIAMETER | 0.602 INCHES MINIMUM FIRST SHOULDER AND 0.605 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 0.339 INCHES NOMINAL FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SPECIAL FEATURES | 0.050 IN. RADIUS UNDER HEAD; LETT ER L IN HEAD FOR LH THD | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.938 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNF |
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