NSN 5305-01-256-5779 6131SS06326, 6131-SS-0632-6, 01-256-5779
Product Details | EXTERNALLY RELIEVED BODY SCREW
5305-01-256-5779 An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercut for thread relief). It is No. 0 (0.060 IN.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below No. 10 (0.190 IN.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and 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. See also BOLT, EXTERNALLY RELIEVED BODY and BOLT, INTERNAL WRENCHING.
Part Alternates: 6131SS06326, 6131-SS-0632-6, 5305-01-256-5779, 01-256-5779, 5305012565779, 012565779
Hardware and Abrasives | Screws
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | 06 JUN 1987 | 01-256-5779 | 01852 ( SCREW, EXTERNALLY RELIEVED BODY ) |
Drawings & Photos | NSN 5305-01-256-5779
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Technical Data | NSN 5305-01-256-5779
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.138 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM |
| FASTENER LENGTH | 0.719 INCHES NOMINAL |
| MATERIAL | STEEL OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-W-52263C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-F-14072 E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | C66 KNURLED NO. 1 |
| HEAD DIAMETER | 0.312 INCHES NOMINAL |
| HEAD HEIGHT | 0.188 INCHES NOMINAL |
| INTERNAL DRIVE STYLE | D14 SLOT |
| POINT STYLE | F16 CONE |
| POINT CHAMFER ANGLE | 77.0 DEGREES MINIMUM AND 87.0 DEGREES MAXIMUM |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| FIRST DIAMETER FROM HEAD | 0.085 INCHES MINIMUM AND 0.105 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.422 INCHES MINIMUM AND 0.454 INCHES MAXIMUM |
Restrictions/Controls & Freight Information | NSN 5305-01-256-5779
| Category | Code | Description |
|---|---|---|
| Hazardous Material Indicator Code | N | There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials |
| Demilitarization Code: | A | Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required. |
| Precious Metals Indicator Code: | U | Precious metal type is unknown |
| Criticality Code: | X | The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. |
| Category | Code | Description |
|---|---|---|
| No Freight Information | ||