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National Stock Number:
5306-01-383-6906
Federal Supply Class:
5306
National Item Identification Number:
013836906
Description:
BOLT,SHOULDER
Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, No. 10 (0.190 IN.) (5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is not designed to be held or driven with an inserted drivers. A locking feature may be incorporated in the design of the head or threads. For items with a thread diameter smaller than No. 10 (0.190 IN.) (5 mm) and those items with an inserted drive head, use SCREW, SHOULDER. For items which are No. 10 (0.190 IN.) (5 mm) or larger in size and are both shouldered and have an externally relieved body, use BOLT, EXTERNALLY RELIEVED BODY. Excludes THUMBSCREW.
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Manufacturer Information:
| 254-6556644FNCOTM-A8 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.431 INCHES NOMINAL | | FASTENER LENGTH | 1.661 INCHES MINIMUM AND | | 1.671 INCHES MAXIMUM | | MATERIAL | STEEL COMP 1018 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | HARDNESS RATING | 58.0 ROCKWELL C MINIMUM AND | | 62.0 ROCKWELL C MAXIMUM OVERALL | | HEAD STYLE | ROUND W/WRENCH FLATS | | HEAD DIAMETER | 0.750 INCHES NOMINAL | | HEAD HEIGHT | 0.269 INCHES MINIMUM AND | | 0.279 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.620 INCHES NOMINAL | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER DIAMETER | 0.4370 INCHES MINIMUM AND | | 0.4375 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 1.130 INCHES MINIMUM AND | | 1.140 INCHES MAXIMUM FIRST SHOULDER | | SPECIAL FEATURES | COAT WITH TECTYL 890 PER MIL-C-16173. THREAD IS UNDERCUT FOR RELIEF |
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