Product Details | VALVE SEAT

4820-01-187-1258 A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see INSERT, ENGINE VALVE SEAT.20248100015Valves, Powered48200018Valves, Nonpowered

Part Alternates: C36107, C-36107, C364PC15, 36600, 36600 PC 5, 36600PC5, 4820-01-187-1258, 01-187-1258, 4820011871258, 011871258

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 18 AUG 1984 01-187-1258

Drawings & Photos | NSN 4820-01-187-1258


Cross Reference | NSN 4820-01-187-1258

Part Number Cage Code Manufacturer
36600 77842 EATON CORPORATION DBA CENTURIAN MECHANICAL SEALS
36600 PC 5 77842 EATON CORPORATION DBA CENTURIAN MECHANICAL SEALS
C-36107 77842 EATON CORPORATION DBA CENTURIAN MECHANICAL SEALS
C364PC15 08192 MARINE ELECTRONICS INC

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Technical Data | NSN 4820-01-187-1258

Characteristic Specifications
STYLE DESIGNATOR B3 DOUBLE THREAD
OVERALL HEIGHT 2.515 INCHES NOMINAL
BODY INSIDE DIAMETER 1.125 INCHES NOMINAL
MATERIAL NICKEL ALLOY BODY PLASTIC POLYTETRAFLUOROETHYLENE SEAT
MATERIAL DOCUMENT AND CLASSIFICATION QQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE BODY MIL-P-19468 MIL SPEC SINGLE MATERIAL RESPONSE SEAT
HARDNESS RATING NOT RATED
SEATING SURFACE SHAPE ANGULAR
SEAT ANGLE IN DEG 45.000 NOMINAL
THREAD SERIES DESIGNATOR UN FIRST THREADED PORTION UN SECOND THREADED PORTION
NOMINAL THREAD SIZE 2.125 INCHES FIRST THREADED PORTION 2.500 INCHES SECOND THREADED PORTION
THREAD QUANTITY PER INCH 16 FIRST THREADED PORTION 12 SECOND THREADED PORTION
THREAD CLASS 2A FIRST THREADED PORTION 2A SECOND THREADED PORTION
THREAD LENGTH 0.688 INCHES NOMINAL FIRST THREADED PORTION 0.594 INCHES NOMINAL SECOND THREADED PORTION
SPECIAL FEATURES HEX WRENCHING FEATURE

Restrictions/Controls & Freight Information | NSN 4820-01-187-1258

Category Code Description
Shelf-Life Code:0Nondeteriorative
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:AItem does not contain precious metal
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 051080 FAUCETS,BIBCOCKS,GATES VALVES
Less than car load rating
Less than truck load rating W Rating Variable
Water commodity Code 576 unknown
Originating Activity Code AX Defense Supply Center Columbus
Columbus, OH 43216-5000
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 4820-01-187-1258

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesXSEMIACTIVE ITEM-NO REPLACEMENT (NON-STOCKED ITEMS) A potentially inactive NSN which must be retained in the supply system as an item of supply because (1) stocks of the item are on hand or in use below the wholesale level and (2) the NSN is cited in equipment authorization documents TO & E, TA, TM, etc., or in-use assets are being reported. 1. Items are authorized for central procurement but not authorized for stockage at wholesale level. 2. Requisitions for in-use replacement will be authorized in accordance with individual Military Service directives. 3. Requisitions may be submitted as requirements generate. Repetitive demands may dictate an AAC change to permit wholesale stockage.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each