Part Details | EXTERNALLY RELIEVED BODY SCREW
5305-01-407-7253 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: 7542964P1, 7542964P0001, 7542964, 5305-01-407-7253, 01-407-7253, 5305014077253, 014077253
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | FEB 03, 1995 | 01-407-7253 | 01852 ( SCREW, EXTERNALLY RELIEVED BODY ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON COUNTERSUNK
HIGH-TORQUE
Cross Reference | NSN 5305-01-407-7253
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 7542964P1 | 99971 | LOCKHEED MARTIN CORPNAVAL ELECTRONICS & SURVEILLANCE |
| 7542964P0001 | 99971 | LOCKHEED MARTIN CORPNAVAL ELECTRONICS & SURVEILLANCE |
| 7542964 | 99971 | LOCKHEED MARTIN CORPNAVAL ELECTRONICS & SURVEILLANCE |
Technical Data | NSN 5305-01-407-7253
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.242 INCHES NOMINAL |
| FASTENER LENGTH | 0.500 INCHES NOMINAL |
| HEAD STYLE | 0 HEXAGON COUNTERSUNK |
| HEAD DIAMETER | 0.4640 INCHES MINIMUM AND 0.5066 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| INTERNAL DRIVE STYLE | HIGH-TORQUE |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| FIRST DIAMETER FROM HEAD | 0.200 INCHES MINIMUM AND 0.204 INCHES MAXIMUM |
| SPECIAL FEATURES | M/F NAS1604-3; UNTHREADED SHOULDER PORTION UNDER HEAD 0.250 IN.DIA |
| END ITEM IDENTIFICATION | AIRCRAFT, HAWKEYE E-2C |