Part Details | MACHINE SCREW
5305-01-077-2556 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: 32241312, 3224131-2, 5305-01-077-2556, 01-077-2556, 5305010772556, 010772556
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | MAY 20, 1979 | 01-077-2556 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
DISHED HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-01-077-2556
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 3224131-2 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
Technical Data | NSN 5305-01-077-2556
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| FASTENER LENGTH | 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM |
| SCREW MATERIAL | NICKEL ALLOY |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281, CL A FED SPEC SINGLE MATERIAL RESPONSE |
| HEAD STYLE | 9 DISHED HEXAGON |
| INTERNAL DRIVE STYLE | 0 CROSS RECESS TYPE 1 |
| LOCKING FEATURE | PELLET |