Part Details | EXTERNALLY RELIEVED BODY SCREW
5305-01-189-6504 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: 55952421, 5595242-1, 55952421, 5595242-1, 5305-01-189-6504, 01-189-6504, 5305011896504, 011896504
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | SEP 18, 1984 | 01-189-6504 | 01852 ( SCREW, EXTERNALLY RELIEVED BODY ) |
REFERENCE DRAWINGS & PICTURES
CROWNED HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-01-189-6504
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 5595242-1 | 53711 | NAVAL SEA SYSTEMS COMMAND |
| 5595242-1 | 31442 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
Technical Data | NSN 5305-01-189-6504
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.315 INCHES MINIMUM AND 0.325 INCHES MAXIMUM |
| FASTENER LENGTH | 1.585 INCHES MINIMUM AND 1.595 INCHES MAXIMUM |
| HEAD STYLE | 9 CROWNED HEXAGON |
| HEAD DIAMETER | 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
| HEAD HEIGHT | 0.305 INCHES MINIMUM AND 0.315 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | 4 CROSS RECESS TYPE 1 |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 4 |
| FIRST DIAMETER FROM HEAD | 0.109 INCHES MINIMUM AND 0.119 INCHES MAXIMUM |
| SECOND DIAMETER FROM HEAD | 0.164 INCHES NOMINAL |
| THIRD DIAMETER FROM HEAD | 0.109 INCHES MINIMUM AND 0.119 INCHES MAXIMUM |
| FOURTH DIAMETER FROM HEAD | 0.118 INCHES MINIMUM AND 0.122 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 1.115 INCHES MINIMUM AND 1.125 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER | 1.450 INCHES MINIMUM AND 1.505 INCHES MAXIMUM |
| SPECIAL FEATURES | HEAD DIMENSIONS AFTER KNURLING |