Part Details | EXTERNALLY RELIEVED BODY SCREW
5305-00-675-2521 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: 127291, 5424332002, 542-4332-002, 5305-00-675-2521, 00-675-2521, 5305006752521, 006752521
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 01, 1963 | 00-675-2521 | 01852 ( SCREW, EXTERNALLY RELIEVED BODY ) |
REFERENCE DRAWINGS & PICTURES
CROWNED HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-00-675-2521
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 127291 | 06481 | NORTHROP GRUMMAN SYSTEMS CORPORATIONDIV NAVIGATION AND MARITIME SYSTEMS |
| 542-4332-002 | 13499 | ROCKWELL COLLINS, INC.DBA GOVERNMENT SYSTEMS |
Technical Data | NSN 5305-00-675-2521
| 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 | 0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM |
| FASTENER LENGTH | 3.258 INCHES NOMINAL |
| HEAD STYLE | 9 CROWNED HEXAGON |
| HEAD DIAMETER | 0.264 INCHES MINIMUM AND 0.266 INCHES MAXIMUM |
| HEAD HEIGHT | 0.141 INCHES MINIMUM AND 0.169 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | 4 CROSS RECESS TYPE 1 |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| FIRST DIAMETER FROM HEAD | 0.156 INCHES NOMINAL |
| SECOND DIAMETER FROM HEAD | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM |
| THIRD DIAMETER FROM HEAD | 0.156 INCHES NOMINAL |
| FOURTH DIAMETER FROM HEAD | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 1.320 INCHES MINIMUM AND 1.336 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 1.382 INCHES MINIMUM AND 1.398 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 2.891 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER | 2.953 INCHES NOMINAL |