|
|
|
National Stock Number:
5305-01-241-2622
Federal Supply Class:
5305
National Item Identification Number:
012412622
Description:
SCREW,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 undercut for thread relief). It is No. 0 (0.060 IN.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below No. 10 (0.190 IN.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also BOLT, EXTERNALLY RELIEVED BODY and BOLT, INTERNAL WRENCHING.
|
Manufacturer Information:
| 989C195H04 | 18323 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 989C95H04 | 18323 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | FT1068-T-5 | 58794 | FASTENER TECHNOLOGY CORP |
|
Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.281 INCHES NOMINAL | | FASTENER LENGTH | 1.081 INCHES NOMINAL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | HEAD STYLE | HEXAGON | | HEAD HEIGHT | 0.245 INCHES NOMINAL | | WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND | | 0.375 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | HEXAGON | | WIDTH ACROSS FLATS | 0.140 INCHES MINIMUM AND | | 0.142 INCHES MAXIMUM | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FIRST DIAMETER FROM HEAD | 0.208 INCHES MINIMUM AND | | 0.211 INCHES MAXIMUM | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.800 INCHES NOMINAL | | SPECIAL FEATURES | SUPPLY WITH LOCK WASHER,FLAT WASHER AND SPRING |
|
|