PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28740Gear,spur

Moog Inc. Dba Ampac-Isp Corp · NSN 3020-01-087-1346 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-01-087-1346 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-087-1346. Primary manufacturer part number: 28740.
Features
  • Gear,spur — FSC 3020
  • Nominal Outside Diameter: 4.380 INCHES IN
  • Pitch Diameter: 3.7700 INCHES NOMINAL IN
  • Pressure Angle: 2.0000 DEGREES
  • Bore Style: STRAIGHT SPLINE BOTH ENDS
  • Style Designator: PROTRUDING HUBS
  • Bore Nominal Diameter: 2.100 INCHES BOTH ENDS IN
  • Hub Nominal Diameter: 2.869 INCHES BOTH ENDS IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel or Nickel Alloy K-500 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-01-087-1346, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Moog Inc. Dba Ampac-Isp Corp. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-01-087-1346
Primary Part Number28740
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerMoog Inc. Dba Ampac-Isp Corp
StatusACTIVE
Nominal Outside Diameter4.380 INCHES IN
Pitch Diameter3.7700 INCHES NOMINAL IN
Pressure Angle2.0000 DEGREES
Bore StyleSTRAIGHT SPLINE BOTH ENDS
Style DesignatorPROTRUDING HUBS
Bore Nominal Diameter2.100 INCHES BOTH ENDS IN
Hub Nominal Diameter2.869 INCHES BOTH ENDS IN
Hub Style DesignatorPLAIN BOTH ENDS
Material Document and ClassificationAMS 5643,17-4PH ASSN STD 1ST MATERIAL RESPONSE OR QQ-N-286 FED SPEC 2ND MATERIAL RESPONSE OVERALL
MaterialSTEEL OR NICKEL ALLOY K-500 OVERALL
Spline Quantity10 BOTH ENDS
Surface TreatmentPASSIVATE OVERALL
Hardness Rating26.0 BRINELL STANDARD NOMINAL OVERALL
Teeth Quantity18
Face Nominal Width1.878 INCHES IN
Nominal Distance Between Body Face and Protruding Hub End1.251 INCHES BOTH ENDS IN
Tooth FormSTANDARD
Body StylePLAIN, SOLID
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5330-00-244-818480A045 INTERCHANGEABLE
Gasket
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5330-00-847-1711 INTERCHANGEABLE
Seal,plain Encased
4330-00-894-634428740 INTERCHANGEABLE
Filter,fluid
Hdt Expeditionary Systems Inc
3040-01-057-8968 INTERCHANGEABLE
Actuator,rotary,hydraulic
4730-01-087-1348CB27386-001 INTERCHANGEABLE
Adapter Assembly,valve
Moog Inc. Dba Ampac-Isp Corp
3130-01-087-222728741 INTERCHANGEABLE
Cap,bearing
Moog Inc. Dba Ampac-Isp Corp
4730-01-113-532329059 INTERCHANGEABLE
Cap,pipe
Moog Inc. Dba Ampac-Isp Corp
3010-01-132-063728423 INTERCHANGEABLE
Adapter Flange,actuator
Moog Inc. Dba Ampac-Isp Corp
4810-01-149-122829718 INTERCHANGEABLE
Rack,piston
Moog Inc. Dba Ampac-Isp Corp
3130-01-508-890131463 INTERCHANGEABLE
Cap,pillow Block
Moog Inc. Dba Ampac-Isp Corp
Cross-Reference Index
Part NumberManufacturer
895-26980 Moog Inc. Dba Ampac-Isp Corp (USA)
28740 PRIMARY Moog Inc. Dba Ampac-Isp Corp (USA)
895-26980 ITEM 5 Moog Inc. Dba Ampac-Isp Corp (USA)
Related Parts
5330-00-244-8184INTERCHANGEABLE
GASKET
80A045
5330-00-847-1711INTERCHANGEABLE
SEAL,PLAIN ENCASED
4330-00-894-6344INTERCHANGEABLE
FILTER,FLUID
28740
3040-01-057-8968INTERCHANGEABLE
ACTUATOR,ROTARY,HYDRAULIC
4730-01-087-1348INTERCHANGEABLE
ADAPTER ASSEMBLY,VALVE
CB27386-001
3130-01-087-2227INTERCHANGEABLE
CAP,BEARING
28741
4730-01-113-5323INTERCHANGEABLE
CAP,PIPE
29059
3010-01-132-0637INTERCHANGEABLE
ADAPTER FLANGE,ACTUATOR
28423
4810-01-149-1228INTERCHANGEABLE
RACK,PISTON
29718
3130-01-508-8901INTERCHANGEABLE
CAP,PILLOW BLOCK
31463

Frequently Asked Questions

What is NSN 3020-01-087-1346?

NSN 3020-01-087-1346 is a Gear,spur, manufactured by Moog Inc. Dba Ampac-Isp Corp, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-01-087-1346?

NSN 3020-01-087-1346 has 3 cross-referenced part numbers: 895-26980 (Moog Inc. Dba Ampac-Isp Corp), 28740 (Moog Inc. Dba Ampac-Isp Corp), 895-26980 ITEM 5 (Moog Inc. Dba Ampac-Isp Corp).

What NSN replaces 3020-01-087-1346?

There are 10 known substitutes for 3020-01-087-1346: 5330-00-244-8184, 5330-00-847-1711, 4330-00-894-6344 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 28740?

Key specifications for 28740: Nominal Outside Diameter: 4.380 INCHES IN; Special Features: SECOND END COUNTERBORE,2.055 IN. NOMINAL DIA,2.380 I. NOMINA DEPTH IN; Pitch Diameter: 3.7700 INCHES NOMINAL IN; Pressure Angle: 2.0000 DEGREES. 19 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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