Part Details | MACHINE SCREW
5305-00-243-7521 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: 225133, 225133, 5305-00-243-7521, 00-243-7521, 5305002437521, 002437521
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | MAR 19, 1971 | 00-243-7521 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-00-243-7521
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 225133 | 00153 | BEI SENSORS & SYSTEMS CO. INCDBA EDCLIFF INSTRUMENTS DIVISION |
| 225133 | 11534 | BEI SENSORS & SYSTEMS COMPANY, INC.DBA BEI DUNCAN |
Technical Data | NSN 5305-00-243-7521
| 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 | 0.157 INCHES MINIMUM |
| FASTENER LENGTH | 0.187 INCHES NOMINAL |
| SCREW MATERIAL | STEEL COMP 303 |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE |
| SCREW SURFACE TREATMENT | PASSIVATE |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE |
| INTERNAL DRIVE STYLE | 0 CROSS RECESS TYPE 1 |