Part Details | MACHINE SCREW
5305-01-322-7399 An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below No. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal 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. Excludes BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; and SCREW, ASSEMBLED WASHER. See also, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; and SCREW, CAP SOCKET HEAD.
Alternate Parts: NAS163425D, NAS1634-25D, 5305-01-322-7399, 01-322-7399, 5305013227399, 013227399
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JUL 13, 1990 | 01-322-7399 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
UNDERCUT HEXAGON
TORQUE SET
Cross Reference | NSN 5305-01-322-7399
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| NAS1634-25D | 80205 | NATIONAL AEROSPACE STANDARDSCOMMITTEE AEROSPACE INDUSTRIES |
Technical Data | NSN 5305-01-322-7399
| 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 | 0.316 INCHES NOMINAL |
| FASTENER LENGTH | 1.863 INCHES MINIMUM AND 1.893 INCHES MAXIMUM |
| SCREW MATERIAL | 0$DST0028$DST8740 |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | BMIL-S-5626$CMIL-S-5000$DMIL-S-6049 3RD MATERIAL RESPONSE |
| SCREW SURFACE TREATMENT | CADMIUM AND CHROMATE |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| MINIMUM TENSILE STRENGTH | 1600000 POUNDS PER SQUARE INCH |
| HEAD STYLE | 3 UNDERCUT HEXAGON |
| HEAD DIAMETER | 0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM |
| HEAD HEIGHT | 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | TORQUE SET |
| BEARING SURFACE OF HEAD SURFACE FINISH | 32.0 MICROINCHES |
| SHANK SURFACE FINISH | 32.0 MICROINCHES |
| THREAD SURFACE FINISH | 32.0 MICROINCHES |
| SPECIAL FEATURES | SHANK HOLE 0.076 MIN. TO 0.086 MAX. DIA.; DISTANCE FROM BEARING SURFACE 0F HEAD TO SHANK HOLE 1.762 NOM. |
| SPECIFICATION/STANDARD DATA | 80205-NAS1634 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |