Part Details | EXTERNALLY RELIEVED BODY SCREW
5305-00-321-9138 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: 3705182, 370518-2, 3705182, 370518-2, 3705182, 370518-2, 5305-00-321-9138, 00-321-9138, 5305003219138, 003219138
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | NOV 21, 1973 | 00-321-9138 | 01852 ( SCREW, EXTERNALLY RELIEVED BODY ) |
REFERENCE DRAWINGS & PICTURES
CROWNED HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-00-321-9138
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 370518-2 | 54X10 | RAYTHEON COMPANYDBA RAYTHEON |
| 370518-2 | 49956 | RAYTHEON COMPANYDBA RAYTHEON |
| 370518-2 | 3B150 | RAYTHEON COMPANYDBA RAYTHEON |
Technical Data | NSN 5305-00-321-9138
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 2A |
| THREAD LENGTH | 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM |
| FASTENER LENGTH | 0.625 INCHES NOMINAL |
| HEAD STYLE | 4 CROWNED HEXAGON |
| HEAD DIAMETER | 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
| HEAD HEIGHT | 0.141 INCHES MINIMUM AND 0.156 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | 4 CROSS RECESS TYPE 1 |
| FIRST DIAMETER FROM HEAD | 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.275 INCHES NOMINAL |