PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51670Gear,spur

Ambac International Corporation Div Ambac International · NSN 3020-00-517-1699 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-517-1699 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-517-1699. Primary manufacturer part number: 51670.
Features
  • Gear,spur — FSC 3020
  • Pitch Diameter: 1.0833 INCHES NOMINAL IN
  • Attachment Method: MOUNTING HOLE
  • Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Bore Style: PLAIN BOTH ENDS
  • Style Designator: PROTRUDING HUB
  • Pressure Angle: 14.5000 DEGREES
  • Nominal Distance Between Body Face and Protruding Hub End: 0.2190 INCHES FIRST END IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 416 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-517-1699, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Ambac International Corporation Div Ambac International. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-517-1699
Primary Part Number51670
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerAmbac International Corporation Div Ambac International
StatusACTIVE
Pitch Diameter1.0833 INCHES NOMINAL IN
Attachment MethodMOUNTING HOLE
Material Document and ClassificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Bore StylePLAIN BOTH ENDS
Style DesignatorPROTRUDING HUB
Pressure Angle14.5000 DEGREES
Nominal Distance Between Body Face and Protruding Hub End0.2190 INCHES FIRST END IN
Tooth FormSTANDARD
Face Nominal Width0.125 INCHES IN
Mounting Hole Nominal Diameter0.125 INCHES TRANSVERSELY THROUGH HUB FIRST END IN
Body StylePLAIN, SOLID
Teeth Quantity52
Hub Style DesignatorPLAIN FIRST END
Mounting Hole Type and Quantity1 PLAIN TRANSVERSELY THROUGH HUB FIRST END
Hub Nominal Diameter1.0000 INCHES FIRST END IN
MaterialSTEEL COMP 416 OVERALL
Nominal Outside Diameter1.1250 INCHES IN
Bore Nominal Diameter0.750 INCHES BOTH ENDS IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5950-00-122-173251670 INTERCHANGEABLE
Coil,electrical
Cae Inc
4320-00-143-589451670 INTERCHANGEABLE
Retainer,pump
Eaton Aerospace, Llc Dba Jackson South
5331-00-166-1066M83248/1-115 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
4820-01-123-826151670 INTERCHANGEABLE
Valve,bleeder,hydraulic System
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5935-01-251-04775167-0 INTERCHANGEABLE
Jack,tip
Fluke Electronics Corp
4820-01-287-487733554 INTERCHANGEABLE
Seat,valve
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
4820-01-328-208658330-45 ITEM 7 INTERCHANGEABLE
Valve,globe
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5305-01-546-540015.933.08.16.11 INTERCHANGEABLE
Screw,cap,hexagon Head
Fasteners Inc.
Cross-Reference Index
Part NumberManufacturer
51670 PRIMARY Ambac International Corporation Div Ambac International (USA)
51670 Arma Div Ambac Industries Inc
51670 Southern Gear & Machine Inc (USA)
Related Parts
5950-00-122-1732INTERCHANGEABLE
COIL,ELECTRICAL
51670
4320-00-143-5894INTERCHANGEABLE
RETAINER,PUMP
51670
5331-00-166-1066INTERCHANGEABLE
O-RING
M83248/1-115
4820-01-123-8261INTERCHANGEABLE
VALVE,BLEEDER,HYDRAULIC SYSTEM
51670
5935-01-251-0477INTERCHANGEABLE
JACK,TIP
5167-0
4820-01-287-4877INTERCHANGEABLE
SEAT,VALVE
33554
4820-01-328-2086INTERCHANGEABLE
VALVE,GLOBE
58330-45 ITEM 7
5305-01-546-5400INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
15.933.08.16.11

Frequently Asked Questions

What is NSN 3020-00-517-1699?

NSN 3020-00-517-1699 is a Gear,spur, manufactured by Ambac International Corporation Div Ambac International, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-517-1699?

NSN 3020-00-517-1699 has 3 cross-referenced part numbers: 51670 (Ambac International Corporation Div Ambac International), 51670 (Arma Div Ambac Industries Inc), 51670 (Southern Gear & Machine Inc).

What NSN replaces 3020-00-517-1699?

There are 8 known substitutes for 3020-00-517-1699: 5950-00-122-1732, 4320-00-143-5894, 5331-00-166-1066 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51670?

Key specifications for 51670: Pitch Diameter: 1.0833 INCHES NOMINAL IN; Attachment Method: MOUNTING HOLE; Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Bore Style: PLAIN BOTH ENDS. 18 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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