Part Details | MACHINE SCREW
5305-00-491-0427 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: 11228282, 5305-00-491-0427, 00-491-0427, 5305004910427, 004910427
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | OCT 03, 1969 | 00-491-0427 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
UNDERCUT HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-00-491-0427
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 11228282 | 17773 | BALLISTIC MISSILE DEFENSE SYSTEMSCOMMAND |
Technical Data | NSN 5305-00-491-0427
| 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 | 1.640 INCHES MINIMUM AND 1.760 INCHES MAXIMUM |
| FASTENER LENGTH | 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM |
| SCREW MATERIAL | 0$DSTA000 |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | BQQ-S-763,300 SERIES$JCB66,300 SERIES$JGCCOMP 16-18 OR 18-8 1ST MATERIAL RESPONSE |
| SCREW SURFACE TREATMENT | PASSIVATE |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
| MINIMUM TENSILE STRENGTH | 80000 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 | CROSS RECESS TYPE 1 |
| SPECIAL FEATURES | 0.080 IN. MIN,0.100 IN. MAX DIA HOLE DRILLED ENTIRE LG OF LONGITUDINAL AXIS OF SCREW |