NSN 5305-00-639-0521 P9419R, 681166, 8393223
Product Details | THUMBSCREW
5305-00-639-0521 An externally threaded fastener whose threaded portion is of one nominal diameter. It may have an unthreaded portion with a diameter less than, equal to, or greater than the diameter of the threaded portion. It has either a vertically flattened, circular knurled, or wing type head, all of which are designed for rotation by the thumb and fingers. For items having wrenching facilities such as socket recess, multiple spline or slot heads, use SCREW (as modified) or BOLT (as modified).
Part Alternates: P9419R, 681166, 8393223, 5305-00-639-0521, 00-639-0521, 5305006390521, 006390521
Hardware and Abrasives | Screws
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | 01 JAN 1963 | 00-639-0521 | 06673 ( THUMBSCREW ) |
Drawings & Photos | NSN 5305-00-639-0521
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Technical Data | NSN 5305-00-639-0521
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.875 INCHES MINIMUM |
| FASTENER LENGTH | 0.980 INCHES MINIMUM AND 1.020 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| SURFACE TREATMENT | CADMIUM OR ZINC OVERALL |
| HEAD STYLE | C79 THUMB NO. 3 |
| HEAD HEIGHT | 0.605 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.521 INCHES MINIMUM AND 0.551 INCHES MAXIMUM |
| POINT STYLE | F19 FLAT |
| SPECIAL FEATURES | ASSEMBLED W/WASHER 1/4 IN. ID,0.620 IN. OD,0.050 IN. PORM 0.010 THK |
Restrictions/Controls & Freight Information | NSN 5305-00-639-0521
| 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 |
|---|---|---|
| NMF Description | 093486 | BOLTS,NUTS OR SCREWS, NOI (SUB 3) |
| Less than car load rating | ||
| Less than truck load rating | W | Rating Variable |
| Water commodity Code | 713 | unknown |
| Originating Activity Code | XX | |
| Air Dimension Code | A | Shipment is not a consolidation and does not exceed 72 inches in any dimension. |
| Air Commodity | B | Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials. |
| Air Special Handling | Z | No special handling required. |
| Special Handling Code | 9 | unknonwn |
| HAZMAT | ||
| Type of Cargo | Z | No special type of cargo code applicable |