Part Details | MACHINE SCREW
5305-01-309-4381 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: MS928103, MS9281-03, 5305-01-309-4381, 01-309-4381, 5305013094381, 013094381
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | OCT 18, 1989 | 01-309-4381 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON
Cross Reference | NSN 5305-01-309-4381
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| MS9281-03 | 96906 | MILITARY STANDARDSPROMULGATED BY MILITARY DEPARTMENTS |
Technical Data | NSN 5305-01-309-4381
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.138 INCHES |
| THREAD QUANTITY PER INCH | 40 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.224 INCHES MINIMUM AND 0.264 INCHES MAXIMUM |
| FASTENER LENGTH | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM |
| SCREW MATERIAL | STEEL COMP 8740 |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE |
| SCREW SURFACE TREATMENT | OXIDE |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2495 ASSN STD SINGLE TREATMENT RESPONSE |
| COLOR | BLACK |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| HEAD STYLE | HEXAGON |
| HEAD HEIGHT | 0.094 INCHES MINIMUM AND 0.106 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM |
| BEARING SURFACE OF HEAD SURFACE FINISH | 32.0 MICROINCHES |
| SHANK SURFACE FINISH | 32.0 MICROINCHES |
| THREAD SURFACE FINISH | 32.0 MICROINCHES |
| SPECIAL FEATURES | WITHOUT INTERNAL DRIVE |