Part Details | MACHINE SCREW
5305-01-270-8495 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: SM4X20MM, 5305-01-270-8495, 01-270-8495, 5305012708495, 012708495
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 14, 1988 | 01-270-8495 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
UNDERCUT HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-01-270-8495
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| SM4X20MM | 97539 | A P M HEXSEAL CORPORATION |
Technical Data | NSN 5305-01-270-8495
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | M |
| NOMINAL THREAD DIAMETER | 4.0 MILLIMETERS |
| THREAD PITCH IN MILLIMETERS | 0.7 |
| EXTERNAL THREAD TOLERANCE CLASS | 6G |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 18.6 MILLIMETERS MINIMUM AND 20.0 MILLIMETERS MAXIMUM |
| FASTENER LENGTH | 20.0 MILLIMETERS NOMINAL |
| SCREW MATERIAL | STEEL |
| HEAD STYLE | 3 UNDERCUT HEXAGON |
| HEAD DIAMETER | 7.6 MILLIMETERS MINIMUM AND 8.0 MILLIMETERS MAXIMUM |
| HEAD HEIGHT | 2.2 MILLIMETERS MINIMUM AND 2.4 MILLIMETERS MAXIMUM |
| INTERNAL DRIVE STYLE | 0 CROSS RECESS TYPE 1 |
| SPECIAL FEATURES | SELF SEALING |