Part Details | MACHINE SCREW
5305-01-057-6677 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: 256UNC2A 38, 2-56UNC-2A 3-8, 2300539006, 23-00539-006, 5305-01-057-6677, 01-057-6677, 5305010576677, 010576677
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | MAR 17, 1978 | 01-057-6677 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
DISHED HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-01-057-6677
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 2-56UNC-2A 3-8 | 70318 | ALLMETAL SCREW PRODUCTS CORP.DBA ALL METAL SCREW PRODUCTS |
| 23-00539-006 | 00724 | RAYTHEON COMPANYDBA RAYTHEON |
Technical Data | NSN 5305-01-057-6677
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.086 INCHES |
| THREAD QUANTITY PER INCH | 56 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.272 INCHES MINIMUM AND 0.346 INCHES MAXIMUM |
| FASTENER LENGTH | 0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| SCREW MATERIAL | 0$DST0302$DST0303 |
| SCREW SURFACE TREATMENT | PASSIVATE |
| HEAD STYLE | 9 DISHED HEXAGON |
| HEAD DIAMETER | 0.156 INCHES MINIMUM AND 0.172 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |