NSN 3020-01-070-7909 1856120, 01-070-7909, 010707909

Product Details | SPUR ANTIBACKLASH GEAR

3020-01-070-7909 An item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.

Part Alternates: 1856120, 3020-01-070-7909, 01-070-7909, 3020010707909, 010707909

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

Supply Group (FSG)	NSN Assign.	NIIN	Item Name Code (INC)
30	19 JAN 1979	01-070-7909	26668 ( GEAR, ANTIBACKLASH, SPUR )

Drawings & Photos | NSN 3020-01-070-7909

Part Number	Request Date	QTY	Origin
3020-01-070-7909	2024-12-341	12	United States
3020-01-070-7909	2012-03-89	61	DIBBS
3020-01-070-7909	2011-09-271	88	DIBBS
3020-01-070-7909	2011-08-215	88	DIBBS
3020-01-070-7909	2009-05-121	115	DIBBS
3020-01-070-7909	2008-06-155	71	DIBBS
3020-01-070-7909	2006-06-167	66	DIBBS

Cross Reference | NSN 3020-01-070-7909

Part Number	Cage Code	Manufacturer
1856120	01351	SOUTHERN GEAR & MACHINE, INC.
1856120	03956	NORTHROP GRUMMAN SYSTEMS CORPORATION DIV NAVAL AND MARINE SYSTEMS

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Related Products | NSN 3020-01-070-7909

3020-01-070-7980, 3020-01-070-8275, 3020-01-070-8528, 3020-01-070-8551, 3020-01-070-8559

Technical Data | NSN 3020-01-070-7909

Characteristic	Specifications
MATERIAL	STEEL CORROSION RESISTING OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
TEETH QUANTITY	60
TOOTH FORM	STANDARD
PRESSURE ANGLE	20.0000 DEGREES
PRECISION CLASSIFICATION	QUALITY NUMBER 10
BACKLASH DESIGNATION	GRADE E
STYLE DESIGNATOR	2 PROTRUDING HUB
PITCH DIAMETER	1.2500 INCHES NOMINAL
NOMINAL OUTSIDE DIAMETER	1.2916 INCHES
FACE NOMINAL WIDTH	0.125 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END	0.250 INCHES FIRST END
BORE STYLE	1 PLAIN BOTH ENDS
BORE NOMINAL DIAMETER	0.090 INCHES BOTH ENDS
HUB STYLE DESIGNATOR	1 PLAIN FIRST END
HUB NOMINAL DIAMETER	0.375 INCHES FIRST END
ATTACHMENT METHOD	MOUNTING HOLE
MOUNTING HOLE TYPE AND QUANTITY	1 THREADED TRANSVERSELY THROUGH HUB, FIRST END
MOUNTING HOLE THREAD SERIES DESIGNATOR	UNC TRANSVERSELY THROUGH HUB, FIRST END
MOUNTING HOLE NOMINAL THREAD SIZE	0.086 INCHES TRANSVERSELY THROUGH HUB, FIRST END

Restrictions/Controls & Freight Information | NSN 3020-01-070-7909

Restrictions
Freight

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	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	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	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 3020-01-070-7909

Air Force

Category	Code	Description
Budget Code	9	General Support DIV57X4921.070:Air Force decentrally managed expense items (ERRC XB3, XF-3) with a unit cost of less than $250,000 that are requisitioned/procured at base (retail) level from DLA, GSA, Army, Navy, Depot Maintenance Service, Air Force Industrial Fund (AFMC), local manufacture and commercial vendors.
Price Validation	N	The current standard price in Catalog Management Data (CMD) has not analyzed or coded for LP/LM. The price has not been analyzed or reviewed for accuracy. ZOP or Standard price challenges are permissible, but must be supported with adequate justification. However, if coded for Local Purchase (LP) or Fabrication/Manufacture as indicated with an (LM) Acquisition Advice Code of ?L? or?F?,the case must be evaluated locally where purchased or fabricated.
Fund Code	SF	Stock fund applicable to items managed for the Air Force by the respective Inventory Control Point.
Materiel Management Aggregation Code	SX	SX:AF SICA RESIDUAL MMAC-OC-ALC
Source of Supply	SMS	Defense Logistics Agency Enterprise Business Systems
Agency	DF	Department of the Air Force
Service Organization	F	U.S. Air Force
Reparability	N	Stock Fund (except Munitions)
Acquisition Advice Codes	Z	INSURANCE/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 Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	1 EA : Each