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National Stock Number:
5306-01-181-8009
Federal Supply Class:
5306
National Item Identification Number:
011818009
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:
| 23014542 | 63005 | ROLLS-ROYCE CORPORATION | | 23014542 | 73342 | ALLISON TRANSMISSION INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNRF | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.840 INCHES MINIMUM | | FASTENER LENGTH | 1.330 INCHES MINIMUM AND | | 1.360 INCHES MAXIMUM | | MATERIAL | STEEL COMP 1335 OR | | STEEL COMP 1541 OVERALL | | HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND | | 38.0 ROCKWELL C MAXIMUM OVERALL | | HEAD STYLE | DEE CHAMFER | | HEAD DIAMETER | 0.624 INCHES NOMINAL | | HEAD HEIGHT | 0.188 INCHES NOMINAL | | DISTANCE FROM CENTERLINE TO FLAT | 0.166 INCHES NOMINAL | | SHOULDER SHAPE | RIBBED FIRST SHOULDER | | SHOULDER DIAMETER | 0.317 INCHES MINIMUM AND | | 0.321 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 0.260 INCHES NOMINAL FIRST SHOULDER | | RIB QUANTITY | 33 | | RIB MAJOR DIAMETER | 0.321 INCHES NOMINAL | | RIB LENGTH | 0.260 INCHES NOMINAL | | DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.030 INCHES MINIMUM AND | | 0.090 INCHES MAXIMUM | | RIB INCLUDED ANGLE | 85.0 DEGREES NOMINAL | | RIB MINOR DIAMETER | 0.317 INCHES NOMINAL | | SPECIAL FEATURES | HEAD COLOR WITH YELLOW MARKING INK |
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