Part Details | EXTERNALLY RELIEVED BODY SCREW
5305-01-186-1201 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: 810342, 5305-01-186-1201, 01-186-1201, 5305011861201, 011861201
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | AUG 08, 1984 | 01-186-1201 | 01852 ( SCREW, EXTERNALLY RELIEVED BODY ) |
REFERENCE DRAWINGS & PICTURES
DISHED HEXAGON
FLAT
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-01-186-1201
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 810342 | 80249 | BAE SYSTEMS INFORMATION ANDELECTRONIC SYSTEMS INTEGRATION INC. |
Technical Data | NSN 5305-01-186-1201
| 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 | 0.600 INCHES MINIMUM AND 0.640 INCHES MAXIMUM |
| FASTENER LENGTH | 4.600 INCHES MINIMUM AND 4.640 INCHES MAXIMUM |
| HEAD STYLE | 3 DISHED HEXAGON |
| HEAD DIAMETER | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM |
| HEAD HEIGHT | 0.111 INCHES MINIMUM AND 0.150 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | 4 CROSS RECESS TYPE 1 |
| POINT STYLE | 6 FLAT |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| FIRST DIAMETER FROM HEAD | 0.126 INCHES MINIMUM AND 0.146 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 3.980 INCHES MINIMUM AND 4.020 INCHES MAXIMUM |