Part Details | MACHINE SCREW
5305-00-637-8018 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: 511D10, 5305-00-637-8018, 00-637-8018, 5305006378018, 006378018
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 01, 1963 | 00-637-8018 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
DISHED HEXAGON
CROSS RECESS TYPE 1
DOUBLE HEXAGON FLATS
Cross Reference | NSN 5305-00-637-8018
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 511D10 | 0AHP5 | CURTISS-WRIGHT CONTROLS, INCDIV SENSORS & CONTROLS |
Technical Data | NSN 5305-00-637-8018
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.470 INCHES MINIMUM |
| FASTENER LENGTH | 0.470 INCHES NOMINAL |
| SCREW MATERIAL | STEEL |
| SCREW SURFACE TREATMENT | CADMIUM |
| HARDNESS RATING | 20.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM |
| HEAD STYLE | 8 DISHED HEXAGON |
| HEAD DIAMETER | 0.375 INCHES NOMINAL |
| HEAD HEIGHT | 0.250 INCHES NOMINAL |
| INTERNAL DRIVE STYLE | 0 CROSS RECESS TYPE 1 |
| HEAD HOLE CONFIGURATION STYLE | 1 DOUBLE HEXAGON FLATS |
| HOLE QUANTITY | 2 |
| HOLE DIAMETER | 0.050 INCHES NOMINAL |
| SPECIAL TEST FEATURES | MAGNETICALLY INSPECT TO AMS2640 |