Part Details | EXTERNALLY RELIEVED BODY SCREW
5305-00-398-0357 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.
Alternate Parts: 514R003H02, 5305-00-398-0357, 00-398-0357, 5305003980357, 003980357
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | APR 15, 1974 | 00-398-0357 | 01852 ( SCREW, EXTERNALLY RELIEVED BODY ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-00-398-0357
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 514R003H02 | 18323 | NORTHROP GRUMMAN SYSTEMS CORPORATIONDBA ELECTRONIC SYSTEMS |
Technical Data | NSN 5305-00-398-0357
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM |
| FASTENER LENGTH | 1.390 INCHES MINIMUM AND 1.450 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| HEAD HEIGHT | 0.170 INCHES MINIMUM AND 0.190 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | 4 CROSS RECESS TYPE 1 |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 4 |
| FIRST DIAMETER FROM HEAD | 0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM |
| SECOND DIAMETER FROM HEAD | 0.189 INCHES MINIMUM AND 0.199 INCHES MAXIMUM |
| THIRD DIAMETER FROM HEAD | 0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM |
| FOURTH DIAMETER FROM HEAD | 0.248 INCHES MINIMUM AND 0.252 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.110 INCHES MINIMUM AND 0.150 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 0.645 INCHES MINIMUM AND 0.655 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 0.685 INCHES MINIMUM AND 0.695 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER | 0.870 INCHES MINIMUM AND 0.890 INCHES MAXIMUM |