Part Details | MACHINE SCREW
5305-00-638-4891 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: FFS92B, FF-S-92B, 3430421000, 343-0421-000, 343042100, 343-0421-00, 5305-00-638-4891, 00-638-4891, 5305006384891, 006384891
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 01, 1963 | 00-638-4891 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
UNDERCUT HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-00-638-4891
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| FF-S-92B | 81348 | FEDERAL SPECIFICATIONSPROMULGATED BY GENERAL SERVICES |
| 343-0421-000 | 13499 | ROCKWELL COLLINS, INC.DBA GOVERNMENT SYSTEMS |
| 343-0421-00 | 13499 | ROCKWELL COLLINS, INC.DBA GOVERNMENT SYSTEMS |
Technical Data | NSN 5305-00-638-4891
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.112 INCHES |
| THREAD QUANTITY PER INCH | 40 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.294 INCHES MINIMUM |
| FASTENER LENGTH | 0.312 INCHES MINIMUM AND 0.344 INCHES MAXIMUM |
| SCREW MATERIAL | STEEL |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE |
| SCREW SURFACE TREATMENT | CADMIUM AND CHROMATE |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE |
| MINIMUM TENSILE STRENGTH | 60000 POUNDS PER SQUARE INCH |
| HEAD STYLE | 3 UNDERCUT HEXAGON |
| HEAD DIAMETER | 0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM |
| HEAD HEIGHT | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |