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NSN 4910-01-052-2811, 4910010522811
GRINDING MACHINE,VALVE SEAT,ELECTRIC

Federal Supply Classification
FSC 4910 - Motor Vehicle Maintenance and Repair Shop Specialized Equipment
National Item Identification Number
NIIN 010522811
Codification Country
United States
Item Name Code
INC 21423
Criticality
(X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code
(N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.
Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS® Summary

National Stock Number 4910-01-052-2811

National Stock Number (NSN) 4910-01-052-2811, or NIIN 010522811, (grinding machine,valve seat,electric) was assigned December 12, 1977 in the Federal Logistics Information System (FLIS). NIIN 010522811 was cancelled on December 15, 2017, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.

There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

This NSN is assigned to Item Name Code (INC) 21423. [A MOTOR DRIVEN GRINDING MACHINE THAT UTILIZES AN ABRASIVE WHEEL, DESIGNED FOR PRECISION GRINDING AND REFINISHING OF INTERNAL COMBUSTION ENGINE VALVE SEATS. IT CONSISTS ESSENTIALLY OF A BASE, UPRIGHT AND GRINDING SUPPORTS, WORK HOLDER, ELECTRIC MOTOR(S), SPINDLE(S), GRINDING HEAD(S), GAGE(S), AND ANY NECESSARY ACCESSORIES SUCH AS DIAMOND DRESSERS AND ABRASIVE WHEEL SETS. IT USUALLY HAS A COOLANT SYSTEM FOR WET GRINDING AND IT MAY BE PORTABLE (DISASSEMBLED IN CONTAINER BASE) FOR EASE OF TRANSPORTATION. EXCLUDES:GRINDING KIT, VALVE SEAT, ELECTRIC.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4910010522811 contains an unknown precious metal.

This information was last updated on .


Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION
(TEXT) LEVER OPERATED CHUCK,CAPACITY 230 IN. TO 11/16 IN.,225 RPM CHUCK SPEED,5800 RPM SPINDLE SPEED,GRINDS VALVE HEADS TO 6 IN. DIA,BUILT-IN WET GRINDING,1/2 HP MOTOR RESILIENT MOUNTED,INCLUDES ONE EACH OF THE FOLLOWING: NO. 176 WHEEL FOR VALVES,NO. 81 WHEEL,VALVE ENDS,NO. 649 DRESSING ATTACHMENT,NO. 609 VALVE END ATTACHMENT,NO. 604 HEX WRENCH,NO. 605 WRENCH,NO. 672A ROCKER ARM ATTACHMENT,NO. 250 GAL GRINDING OIL,NO. 641 PLASTIC COVER,NO. 644 VALVE SERVICE CABINET,NO. 1725BB VALVE SEAT GRINDER SET AND NO. 1757 METAL BOX

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