Part Details | MACHINE SCREW
5305-00-984-4639 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: BACB30EMP4L7, BACB30EM-P4L7, BACB30EMP4L7, BACB30EMP4L7, BACB30EM-P4L7, BACB30EMP4L7, BACB30EM-P4L7, BACB30EMP4L7, BACB30EM-P4L7, BACB30EMP4L7, 5305-00-984-4639, 00-984-4639, 5305009844639, 009844639
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 01, 1962 | 00-984-4639 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
UNDERCUT HEXAGON
HIGH-TORQUE
Cross Reference | NSN 5305-00-984-4639
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| BACB30EM-P4L7 | 92215 | ARCONIC GLOBAL FASTENERS & RINGS,INC. |
| BACB30EMP4L7 | 08903 | BOEING COMPANY, THEDBA BOEING |
| BACB30EM-P4L7 | 73197 | HI-SHEAR CORPORATION |
| BACB30EM-P4L7 | L4528 | LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC |
| BACB30EM-P4L7 | 80539 | SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP |
| BACB30EMP4L7 | 81205 | THE BOEING COMPANYDBA BOEING |
Technical Data | NSN 5305-00-984-4639
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.425 INCHES MINIMUM |
| FASTENER LENGTH | 0.863 INCHES NOMINAL |
| SCREW MATERIAL | STEEL COMP E4340 |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE |
| SCREW SURFACE TREATMENT | NICKEL AND CADMIUM |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| HEAD STYLE | 3 UNDERCUT HEXAGON |
| HEAD DIAMETER | 0.473 INCHES NOMINAL |
| HEAD HEIGHT | 0.162 INCHES NOMINAL |
| INTERNAL DRIVE STYLE | HIGH-TORQUE |
| SPECIFICATION/STANDARD DATA | B1205-BACB30E MANUFACTURERS STANDARD |