NSN 5310-00-550-1383 W20874, 2318491, 2318-49-1
Product Details | RECESSED WASHER
5310-00-550-1383 A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes WASHER, CONCAVE, RETAINER, PACKING, and thrust type washers. See also SPACER, SLEEVE; and SPACER, STEPPED.
Part Alternates: W20874, 2318491, 2318-49-1, 5310-00-550-1383, 00-550-1383, 5310005501383, 005501383
Hardware and Abrasives | Nuts and Washers
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | 18 OCT 1974 | 00-550-1383 | 15933 ( WASHER, RECESSED ) |
Drawings & Photos | NSN 5310-00-550-1383
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Technical Data | NSN 5310-00-550-1383
| Characteristic | Specifications |
|---|---|
| MATERIAL | STEEL COMP 410 OR STEEL COMP 416 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE OR AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| STYLE DESIGNATOR | 16 RECESS |
| HOLE DIAMETER | 0.438 INCHES MINIMUM AND 0.442 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 0.807 INCHES MINIMUM AND 0.817 INCHES MAXIMUM |
| OVERALL HEIGHT | 0.169 INCHES MINIMUM AND 0.173 INCHES MAXIMUM |
| RECESS DEPTH | 0.044 INCHES MINIMUM AND 0.048 INCHES MAXIMUM |
| MATERIAL THICKNESS | 0.167 INCHES MINIMUM AND 0.177 INCHES MAXIMUM |
| SURFACE FINISH | 63.0 MICROINCHES TOP 63.0 MICROINCHES BOTTOM 63.0 MICROINCHES COUNTERBORE FACE |
| III HEAT TREATMENT | AS FABRICATED |
| MANUFACTURERS CODE | 70255 |
| DESIGN CONTROL REFERENCE | 2318-49-1 |
Restrictions/Controls & Freight Information | NSN 5310-00-550-1383
| 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 | 194160 | WASHER OR GASKETS, IRON OR STEEL, |
| Less than car load rating | U | 50 |
| Less than truck load rating | U | 50.0 |
| Water commodity Code | 713 | unknown |
| Originating Activity Code | ZG | Germany ZH ZJ |
| 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 |