Part Details | EXTERNALLY RELIEVED BODY SCREW
5305-01-278-1961 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: A30135743, A3013574-3, 5305-01-278-1961, 01-278-1961, 5305012781961, 012781961
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | MAY 03, 1988 | 01-278-1961 | 01852 ( SCREW, EXTERNALLY RELIEVED BODY ) |
REFERENCE DRAWINGS & PICTURES
CROWNED HEXAGON
FLAT
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-01-278-1961
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| A3013574-3 | 80063 | US ARMY COMMUNICATIONS &ELECTRONICS MATERIEL READINESS |
Technical Data | NSN 5305-01-278-1961
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | M |
| NOMINAL THREAD DIAMETER | 3.0 MILLIMETERS |
| THREAD PITCH IN MILLIMETERS | 0.5 |
| EXTERNAL THREAD TOLERANCE CLASS | 6G |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 4.9 MILLIMETERS MINIMUM AND 5.1 MILLIMETERS MAXIMUM |
| FASTENER LENGTH | 11.8 MILLIMETERS MINIMUM AND 12.1 MILLIMETERS MAXIMUM |
| HEAD STYLE | 9 CROWNED HEXAGON |
| HEAD DIAMETER | 5.5 MILLIMETERS MINIMUM AND 5.8 MILLIMETERS MAXIMUM |
| HEAD HEIGHT | 1.65 MILLIMETERS MINIMUM AND 1.90 MILLIMETERS MAXIMUM |
| INTERNAL DRIVE STYLE | 4 CROSS RECESS TYPE 1 |
| POINT STYLE | 9 FLAT |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| FIRST DIAMETER FROM HEAD | 2.10 MILLIMETERS MINIMUM AND 2.18 MILLIMETERS MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 6.78 MILLIMETERS MINIMUM AND 7.22 MILLIMETERS MAXIMUM |