Part Details | MACHINE SCREW
5305-01-290-3754 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: 0.25020UNC2AX11, 0.250-20UNC-2AX11, FFS92, FF-S-92, FFS92 .25020 UNC2AX1IN, FF-S-92 .250-20 UNC-2AX1IN, 5305-01-290-3754, 01-290-3754, 5305012903754, 012903754
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | DEC 09, 1988 | 01-290-3754 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
UNDERCUT HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-01-290-3754
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 0.250-20UNC-2AX11 | 80204 | AMERICAN NATIONAL STANDARDSINSTITUTE, INCORPORATED |
| FF-S-92 | 81348 | FEDERAL SPECIFICATIONSPROMULGATED BY GENERAL SERVICES |
| FF-S-92 .250-20 UNC-2AX1IN | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH |
Technical Data | NSN 5305-01-290-3754
| 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 | 10.000 INCHES MINIMUM AND 11.000 INCHES MAXIMUM |
| FASTENER LENGTH | 11.000 INCHES NOMINAL |
| SCREW MATERIAL | NICKEL ALLOY 400 |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE |
| HEAD STYLE | 8 UNDERCUT HEXAGON |
| HEAD DIAMETER | 0.418 INCHES MINIMUM AND 0.437 INCHES MAXIMUM |
| HEAD HEIGHT | 0.175 INCHES MINIMUM AND 0.191 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | 0 CROSS RECESS TYPE 1 |