Product Details | VALVE SEAT

4820-01-168-1949 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: 4039809, 40398-09, 40398-09 FIND 13, 4039809FIND13, 930, 93002, 930-02, 4820-01-168-1949, 01-168-1949, 4820011681949, 011681949

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 14 DEC 1983 01-168-1949

Drawings & Photos | NSN 4820-01-168-1949


Demand History | NSN 4820-01-168-1949

Part Number Request Date QTY Origin
930-02 2025-05-125 7 DIBBS
930-02 2025-04-114 7 DIBBS
930-02 2025-03-72 9 DIBBS
930-02 2024-07-204 8 DIBBS
930-02 2024-07-193 8 DIBBS
930-02 2024-04-116 10 DIBBS
930-02 2023-09-261 3 DIBBS
930-02 2023-09-250 3 DIBBS
930-02 2023-05-138 3 DIBBS
930-02 2022-07-199 4 DIBBS
930-02 2022-07-188 4 DIBBS
930-02 2022-04-104 3 DIBBS
930-02 2021-07-202 3 DIBBS
930-02 2020-10-294 3 DIBBS
930-02 2020-04-103 3 DIBBS
4820-01-168-1949 2018-02-57 7 DIBBS
4820-01-168-1949 2018-02-46 7 DIBBS
4820-01-168-1949 2017-10-295 8 DIBBS
4820-01-168-1949 2013-06-171 10 DIBBS
4820-01-168-1949 2013-06-156 10 DIBBS
4820-01-168-1949 2012-10-292 3 DIBBS
4820-01-168-1949 2012-05-125 3 DIBBS
4820-01-168-1949 2011-12-341 3 DIBBS
4820-01-168-1949 2011-11-308 2 DIBBS
4820-01-168-1949 2011-10-276 2 DIBBS
4820-01-168-1949 2011-03-75 4 DIBBS
4820-01-168-1949 2009-04-98 4 DIBBS
4820-01-168-1949 2009-02-34 8 DIBBS
4820-01-168-1949 2009-01-22 7 DIBBS

Cross Reference | NSN 4820-01-168-1949

Part Number Cage Code Manufacturer
40398-09 55378 TRAC REGULATORS INC
40398-09 FIND 13 55378 TRAC REGULATORS INC
930 55378 TRAC REGULATORS INC
930-02 55378 TRAC REGULATORS INC

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Technical Data | NSN 4820-01-168-1949

Characteristic Specifications
STYLE DESIGNATOR B1 THREADED FLANGED
BODY INSIDE DIAMETER 0.625 INCHES NOMINAL
MATERIAL NICKEL ALLOY OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION ASTM A494 ASSN STD ALL MATERIAL RESPONSES OVERALL
HARDNESS RATING NOT RATED
SEATING SURFACE SHAPE FLAT
THREAD SERIES DESIGNATOR UNS SINGLE THREADED PORTION
NOMINAL THREAD SIZE 0.875 INCHES SINGLE THREADED PORTION
THREAD QUANTITY PER INCH 18 SINGLE THREADED PORTION
THREAD CLASS 2A SINGLE THREADED PORTION
THREAD LENGTH 0.182 INCHES NOMINAL SINGLE THREADED PORTION
SPECIAL FEATURES 1.000 IN.OD
III END ITEM IDENTIFICATION TRAC REGULATOR 3/4"TRAC STYLE H SEA WATER PRESSURE REDUCING VALVE,PER MIL-V-2042 TYPE II 150 ;DWG 40398-9

Restrictions/Controls & Freight Information | NSN 4820-01-168-1949

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 4820-01-168-1949

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 CodesZINSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each