Furnished Items and Quantity: 1 RETAINING RING AND 2 SPRING
Teeth Quantity: 112
Bore Style: W/COUNTERBORE BOTH ENDS
Style Designator: PROTRUDING HUBS
Hub Style Designator: 2 STEPS FIRST END
Hub Style Designator: PLAIN SECOND END
Nominal Outside Diameter: 1.777 INCHES IN
Identification
NSN: 3020-00-565-0138
NIIN: 005650138
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
General Description
The Gear,antibacklash,spur, cataloged under National Stock Number 3020-00-565-0138, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3020-00-565-0138
Item Name
Gear,antibacklash,spur
FSC / FSG
3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Status
ACTIVE
Furnished Items and Quantity
1 RETAINING RING AND 2 SPRING
Teeth Quantity
112
Bore Style
W/COUNTERBORE BOTH ENDS
Style Designator
PROTRUDING HUBS
Hub Style Designator
2 STEPS FIRST END
Hub Style Designator
PLAIN SECOND END
Nominal Outside Diameter
1.777 INCHES IN
Pressure Angle
20.0000 DEGREES
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
412935
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3020-00-000-0091
GEAR,SPUR
3020-00-001-0027
3020-00-001-0027 · Item name not on file
3020-00-001-0028
3020-00-001-0028 · Item name not on file
3020-00-001-0063
3020-00-001-0063 · Item name not on file
3020-00-001-0064
3020-00-001-0064 · Item name not on file
3020-00-001-0066
3020-00-001-0066 · Item name not on file
3020-00-001-0071
3020-00-001-0071 · Item name not on file
3020-00-001-0072
3020-00-001-0072 · Item name not on file
Frequently Asked Questions
What is NSN 3020-00-565-0138?
NSN 3020-00-565-0138 is a Gear,antibacklash,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
What are the specifications of 3020-00-565-0138?
Key specifications for 3020-00-565-0138: Furnished Items and Quantity: 1 RETAINING RING AND 2 SPRING; Teeth Quantity: 112; Bore Style: W/COUNTERBORE BOTH ENDS; Style Designator: PROTRUDING HUBS. 8 specifications are documented in the U.S. Government catalog.
Is NSN 3020-00-565-0138 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.