Part Details | MACHINE SCREW
5305-01-437-2817 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: 0.25020UNC2A0.750T3S9C, FFS92, FF-S-92, 4366603215FINDAY133, 436-6603215FINDAY-1-33, 5305-01-437-2817, 01-437-2817, 5305014372817, 014372817
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | OCT 09, 1996 | 01-437-2817 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
UNDERCUT HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-01-437-2817
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 0.25020UNC2A0.750T3S9C | 80204 | AMERICAN NATIONAL STANDARDSINSTITUTE, INCORPORATED |
| FF-S-92 | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
| 436-6603215FINDAY-1-33 | 53711 | NAVAL SEA SYSTEMS COMMAND |
Technical Data | NSN 5305-01-437-2817
| 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 | 0.750 INCHES NOMINAL |
| FASTENER LENGTH | 0.750 INCHES NOMINAL |
| SCREW MATERIAL | STEEL CORROSION RESISTING |
| LOCKING FEATURE MATERIAL | PLASTIC POLYAMIDE |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | AQQ-S-763$JCA66 1ST MATERIAL RESPONSE |
| HEAD STYLE | 3 UNDERCUT HEXAGON |
| HEAD DIAMETER | 0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM |
| HEAD HEIGHT | 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| LOCKING FEATURE | R$DDK$DDL |
| NONDEFINITIVE SPEC/STD DATA | 3 TYPE AND 9C STYLE |