Part Details | MACHINE SCREW
5305-01-239-3502 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: QQN281 CLA, QQ-N-281 CL-A, FFS92 0.25020UNC2A X 0.625LG, FF-S-92 0.250-20UNC-2A X 0.625LG, 5203381 ITEM 106, DWG 4455203381 ITEM 106, DWG 445-5203381 ITEM 106, 5305-01-239-3502, 01-239-3502, 5305012393502, 012393502
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | AUG 28, 1986 | 01-239-3502 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-01-239-3502
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| QQ-N-281 CL-A | 81348 | FEDERAL SPECIFICATIONSPROMULGATED BY GENERAL SERVICES |
| FF-S-92 0.250-20UNC-2A X 0.625LG | 81348 | FEDERAL SPECIFICATIONSPROMULGATED BY GENERAL SERVICES |
| 5203381 ITEM 106 | 43689 | HUNTINGTON INGALLS INCORPORATEDDIV NEWPORT NEWS |
| DWG 445-5203381 ITEM 106 | 53711 | NAVAL SEA SYSTEMS COMMAND |
Technical Data | NSN 5305-01-239-3502
| 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 | 0.625 INCHES NOMINAL |
| SCREW MATERIAL | NICKEL ALLOY 400 |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE |
| INTERNAL DRIVE STYLE | 0 CROSS RECESS TYPE 1 |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 1S STYLE |
