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National Stock Number:
5306-01-175-8766
Federal Supply Class:
5306
National Item Identification Number:
011758766
Description:
BOLT,EXTERNALLY RELIEVED BODY
Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). It is No. 10 (0.190 IN.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, INTERNAL WRENCHING and THUMBSCREW. See also SCREW, EXTERNALLY RELIEVED BODY.
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Manufacturer Information:
| BLT4446 | K0378 | ROLLS-ROYCE PLC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.626 INCHES MINIMUM AND | | 0.686 INCHES MAXIMUM | | FASTENER LENGTH | 1.204 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | HR 650,FSCM K0378 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | SILVER OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DTD 939,FSCM K0378 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | HEXAGON | | HEAD HEIGHT | 0.140 INCHES NOMINAL | | WIDTH BETWEEN FLATS | 0.491 INCHES NOMINAL | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 2 | | FIRST DIAMETER FROM HEAD | 0.246 INCHES MINIMUM AND | | 0.249 INCHES MAXIMUM | | SECOND DIAMETER FROM HEAD | 0.190 INCHES MINIMUM AND | | 0.195 INCHES MAXIMUM | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.180 INCHES MINIMUM AND | | 0.210 INCHES MAXIMUM | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 0.518 INCHES MINIMUM AND | | 0.578 INCHES MAXIMUM | | SPECIAL FEATURES | SECOND DIA FROM HEAD ROUNDED BOTH SIDES 0.195 IN. FROM FULL DIA OF 0.250 IN. | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | K0378 | | DESIGN CONTROL REFERENCE | BLT4446 |
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