Part Details | MACHINE SCREW
5305-00-237-9579 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: 606656, 60-6656, 606656, 60-6656, 5305-00-237-9579, 00-237-9579, 5305002379579, 002379579
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | MAY 28, 1973 | 00-237-9579 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
DISHED HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-00-237-9579
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 60-6656 | 30918 | AVIATION INDUSTRIES INC |
| 60-6656 | 81205 | THE BOEING COMPANYDBA BOEING |
Technical Data | NSN 5305-00-237-9579
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.280 INCHES MINIMUM |
| FASTENER LENGTH | 0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM |
| SCREW MATERIAL | 0$DST8630 |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | BMIL-S-6058$CMIL-S-6050 3RD MATERIAL RESPONSE |
| SCREW SURFACE TREATMENT | CADMIUM |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | F1.20 FSCM 81205 MFR REF SINGLE TREATMENT RESPONSE |
| MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
| HEAD STYLE | 8 DISHED HEXAGON |
| HEAD DIAMETER | 0.423 INCHES MINIMUM AND 0.425 INCHES MAXIMUM |
| HEAD HEIGHT | 0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | 0 CROSS RECESS TYPE 1 |
| SPECIAL FEATURES | REQUIRES HEAT TREAT AND DIMENSIONS TO BE CONCENTRIC WITHIN .005 |
| CRITICALITY CODE JUSTIFICATION | FEAT |