Product Details | HELICAL GEAR

3020-00-391-0921 A gear, cylindrical in form, with teeth on the outer surface at an angle to the axis of the gear. See also GEAR, ANTIBACKLASH, HELICAL

Part Alternates: 3148009, 3237629, 3020-00-391-0921, 00-391-0921, 3020003910921, 003910921

Mechanical Power Transmission Equipment | Gears, Pulleys, Sprockets, and Transmission Chain

Supply Group (FSG) NSN Assign. NIIN
30 01 JAN 1961 00-391-0921

Drawings & Photos | NSN 3020-00-391-0921


Cross Reference | NSN 3020-00-391-0921

Part Number Cage Code Manufacturer
3148009 53711 NAVAL SEA SYSTEMS COMMAND
3148009 80064 NAVAL SHIP SYSTEMS COMMAND
3237629 55380 HATCH & KIRK, INC. DIV HATCH & KIRK INC
3237629 72915 GENERAL MOTORS CORP ELECTRO-MOTIVE DIV

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Technical Data | NSN 3020-00-391-0921

Characteristic Specifications
MATERIAL STEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION MIL-S-890,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING 10.0 ROCKWELL C MINIMUM AND 16.0 ROCKWELL C MAXIMUM OVERALL
TEETH QUANTITY 54
TEETH TYPE SINGLE HELIX
TOOTH FORM STANDARD
TOOTH DIRECTION LEFT
PRESSURE ANGLE 20.0000 DEGREES
HELIX ANGLE 27.3217 DEGREES
STYLE DESIGNATOR 3 RECESSED HUBS
PITCH DIAMETER 10.8000 INCHES NOMINAL
NOMINAL OUTSIDE DIAMETER 11.0858 INCHES
FACE NOMINAL WIDTH 1.500 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND RECESSED HUB END 0.438 INCHES BOTH ENDS
BORE STYLE 1 PLAIN BOTH ENDS
BORE NOMINAL DIAMETER 4.001 INCHES BOTH ENDS
HUB STYLE DESIGNATOR 1 PLAIN BOTH ENDS
HUB NOMINAL DIAMETER 6.000 INCHES FIRST END 6.000 INCHES SECOND END
BODY STYLE 4A WEBBED, WITH LIGHTENING HOLES
ATTACHMENT METHOD MOUNTING HOLE
MOUNTING HOLE TYPE AND QUANTITY 4 THREADED AXIALLY THROUGH HUB, FIRST END
MOUNTING HOLE THREAD SERIES DESIGNATOR UNF AXIALLY THROUGH HUB, FIRST END
MOUNTING HOLE NOMINAL THREAD SIZE 0.500 INCHES AXIALLY THROUGH HUB, FIRST END
MOUNTING HOLE THREAD QUANTITY PER INCH 20 AXIALLY THROUGH HUB, FIRST END
BOLT HOLE CIRCLE NOMINAL DIAMETER 5.000 INCHES AXIALLY THROUGH HUB, FIRST END

Restrictions/Controls & Freight Information | NSN 3020-00-391-0921

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:UPrecious 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 197339 WHEELS COG/GEAR/PINION I/S
Less than car load rating
Less than truck load rating R 65.0
Water commodity Code 593 unknown
Originating Activity Code XX
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity V Vehicles, machinery, shop and warehouse equipment and supplies, including special tools and equipment, ground servicing and special purpose vehicles, marine equipment and supplies, repair and maintenance parts for the above.
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 3020-00-391-0921

Category Code Description
Materiel Category and Inventory ManagerJ Ground Forces Support Materiel (DLA/GSA Items)
Appropriation and Budget Activity2 Stock Fund Secondary Items
Management Inventory Segment2 NONREPARABLE ITEMS (Exclusive of Insurance and Provisioning Items). This code will be used to identify items which are not reparable.
Specific Group/Generic Code0 Medical Materiel
Weapons Systems/End Item or Homogeneous Group00DLA/GSA-Managed Items that cannot be identified to a specific Army Weapons Systems/End Item
Accounting Requirements CodeX Expendable item. An item of Army property coded with an ARC of ?X? in the AMDF. Expendable items require no formal accountability after issue from a stock record account. Commercial and fabricated items similar to items coded ?X? in the AMDF are considered expendable items.
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDADepartment of the Army
Service OrganizationAU.S. Army
ReparabilityZThis is a nonreparable item. If condemned or economically unserviceable, then dispose at the level authorized replace the item.
Acquisition Advice CodesVTERMINAL ITEM # Identifies items in stock, but future procurement is not authorized. Requisitions may continue to be submitted until stocks are exhausted. Preferred item National Stock Number is normally provided by application of the phrase: When Exhausted Use (NSN). Requisitions will be submitted in accordance with IMM/Service requisitioning procedures as applicable.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each
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 CodesJNOT 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 CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each