Part Details | MACHINE SCREW
5305-01-090-7138 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: SEELSKREWR.25020X.500, SEELSKREW/R/.250-20X.500, 106946792, 10694679-2, 5305-01-090-7138, 01-090-7138, 5305010907138, 010907138
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | FEB 23, 1980 | 01-090-7138 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
CROWNED HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-01-090-7138
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| SEELSKREW/R/.250-20X.500 | 97539 | A P M HEXSEAL CORPORATION |
| 10694679-2 | 18876 | U S ARMY AVIATION AND MISSILECOMMAND |
Technical Data | NSN 5305-01-090-7138
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| FASTENER LENGTH | 0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| SCREW MATERIAL | 2$4$5$DST0384 |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | BQQ-W-423$CQQ-W-423$DQQ-W-423$JCE66 1ST MATERIAL RESPONSE |
| SCREW SURFACE TREATMENT | PASSIVATE |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 TY 1,2,OR3 FED SPEC SINGLE TREATMENT RESPONSE |
| HEAD STYLE | 4 CROWNED HEXAGON |
| HEAD DIAMETER | 0.498 INCHES MINIMUM AND 0.517 INCHES MAXIMUM |
| HEAD HEIGHT | 0.175 INCHES NOMINAL |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| FEATURES PROVIDED | O RING |