NSN 5310-00-818-0520 A51B2101411, A51B21014-11, 00-818-0520
Product Details | RECESSED WASHER
5310-00-818-0520 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: A51B2101411, A51B21014-11, 5310-00-818-0520, 00-818-0520, 5310008180520, 008180520
Hardware and Abrasives | Nuts and Washers
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | 18 APR 1972 | 00-818-0520 | 15933 ( WASHER, RECESSED ) |
Drawings & Photos | NSN 5310-00-818-0520
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Technical Data | NSN 5310-00-818-0520
| Characteristic | Specifications |
|---|---|
| MATERIAL | STEEL COMP 4130 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OR PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-8837 TY 2 CL 1 MIL SPEC 1ST TREATMENT RESPONSE OR QQ-P-35 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM |
| STYLE DESIGNATOR | 26 RECESSED |
| HOLE DIAMETER | 0.378 INCHES MINIMUM AND 0.388 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 0.750 INCHES NOMINAL |
| RECESS DIAMETER | 0.483 INCHES MINIMUM AND 0.495 INCHES MAXIMUM |
| MATERIAL THICKNESS | 0.080 INCHES NOMINAL |
| RECESS ANGLE | 90.0 DEGREES NOMINAL |
| TEST DATA DOCUMENT | 81349-MIL-I-6868 SPECIFICATION |
| III HEAT TREATMENT | AS FABRICATED |
| MANUFACTURERS CODE | 61174 |
| DESIGN CONTROL REFERENCE | A51B21014-11 |
Restrictions/Controls & Freight Information | NSN 5310-00-818-0520
| Category | Code | Description |
|---|---|---|
| Shelf-Life Code: | 0 | Nondeteriorative |
| 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. |
| Controlled Inventory Item Code: | U | UNCLASSIFIED |
| 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 | ||
| Less than truck load rating | U | 50.0 |
| Water commodity Code | 713 | unknown |
| Originating Activity Code | KE | Naval ICP Philadelphia, PA 19111 |
| 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 |
Management | NSN 5310-00-818-0520
Navy| Category | Code | Description |
|---|---|---|
| Cognizance Codes | 9B | Navy-owned stocks of DLA material Naval Inventory Control Point, Mechanicsburg |
| Source of Supply | SMS | Defense Logistics Agency Enterprise Business Systems |
| Agency | DN | Department of the Navy |
| Service Organization | N | U.S. Navy |
| Acquisition Advice Codes | J | NOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition. |
| Controlled Item Code | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |
| Purchasing | QTY UOM |
1 EA : Each |