PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

26M77-100 PIECE 55 4INGear,bevel

Electric Boat Corporation Div General Dynamics Electric Boat · NSN 3020-01-190-6163 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-01-190-6163 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-190-6163. Primary manufacturer part number: 26M77-100 PIECE 55 4IN.
Features
  • Gear,bevel — FSC 3020
  • Pressure Angle: 22.5000 DEGREES
  • Teeth Quantity: 38
  • Face Nominal Width: 0.750 INCHES IN
  • Nominal Outside Diameter: 6.3990 INCHES IN
  • Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Bore Nominal Diameter: 3.000 INCHES BOTH ENDS IN
  • Material: STEEL COMP 1095 OVERALL
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 1095 Overall construction
General Description

The Gear,bevel, cataloged under National Stock Number 3020-01-190-6163, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Electric Boat Corporation Div General Dynamics Electric Boat. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-01-190-6163
Primary Part Number26M77-100 PIECE 55 4IN
Item NameGear,bevel
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerElectric Boat Corporation Div General Dynamics Electric Boat
StatusACTIVE
Pressure Angle22.5000 DEGREES
Teeth Quantity38
Face Nominal Width0.750 INCHES IN
Nominal Outside Diameter6.3990 INCHES IN
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Bore Nominal Diameter3.000 INCHES BOTH ENDS IN
MaterialSTEEL COMP 1095 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-900-234426M77-100 ITEM 19 INTERCHANGEABLE
Disk,valve
Naval Ship Systems Command
4820-01-092-034326M77-100 ITEM 21 INTERCHANGEABLE
Retainer,disk,valve
Naval Ship Systems Command
4820-01-121-29032620-920X12 PIECE 53 3IN INTERCHANGEABLE
Adapter,splined,globe Valve
Hydro-Aire Aerospace Corp
4320-01-148-830526M77-100 ITEM90 INTERCHANGEABLE
Ring,wearing
Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-151-380826M77-100 ITEM 94 INTERCHANGEABLE
Guide,valve Stem
Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-159-777726M77-100 ITEM 31 INTERCHANGEABLE
Disk Retainer and Throttling Ski
Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-160-160426M77-100 ITEM 93 INTERCHANGEABLE
Guide,valve Stem
Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-161-093226M77-100 PIECE 18 INTERCHANGEABLE
Seat,valve
Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-161-519026M77-100 PIECE 20 INTERCHANGEABLE
Disk,valve
Electric Boat Corporation Div General Dynamics Electric Boat
5340-01-199-808326M77-100 ITEM 70 INTERCHANGEABLE
Plunger,detent
Electric Boat Corporation Div General Dynamics Electric Boat
Cross-Reference Index
Part NumberManufacturer
845-2445066 PIE Naval Ship Systems Command (USA)
26M77-100 PIECE 55 4IN PRIMARY Electric Boat Corporation Div General Dynamics Electric Boat (USA)
845-2445066 Naval Ship Systems Command (USA)
26M77-100 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
Related Parts
4820-00-900-2344INTERCHANGEABLE
DISK,VALVE
26M77-100 ITEM 19
4820-01-092-0343INTERCHANGEABLE
RETAINER,DISK,VALVE
26M77-100 ITEM 21
4820-01-121-2903INTERCHANGEABLE
ADAPTER,SPLINED,GLOBE VALVE
2620-920X12 PIECE 53 3IN
4320-01-148-8305INTERCHANGEABLE
RING,WEARING
26M77-100 ITEM90
4820-01-151-3808INTERCHANGEABLE
GUIDE,VALVE STEM
26M77-100 ITEM 94
4820-01-159-7777INTERCHANGEABLE
DISK RETAINER AND THROTTLING SKI
26M77-100 ITEM 31
4820-01-160-1604INTERCHANGEABLE
GUIDE,VALVE STEM
26M77-100 ITEM 93
4820-01-161-0932INTERCHANGEABLE
SEAT,VALVE
26M77-100 PIECE 18
4820-01-161-5190INTERCHANGEABLE
DISK,VALVE
26M77-100 PIECE 20
5340-01-199-8083INTERCHANGEABLE
PLUNGER,DETENT
26M77-100 ITEM 70
3020-01-212-0328INTERCHANGEABLE
GEAR SET,BEVEL,MATCHED
845-2445066 ITEM 55,66
4820-01-216-9271INTERCHANGEABLE
DISK STEM RING,VALV
26N77-100 ITEM 28

Frequently Asked Questions

What is NSN 3020-01-190-6163?

NSN 3020-01-190-6163 is a Gear,bevel, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-01-190-6163?

NSN 3020-01-190-6163 has 4 cross-referenced part numbers: 845-2445066 PIE (Naval Ship Systems Command), 26M77-100 PIECE 55 4IN (Electric Boat Corporation Div General Dynamics Electric Boat), 845-2445066 (Naval Ship Systems Command), 26M77-100 (Electric Boat Corporation Div General Dynamics Electric Boat).

What NSN replaces 3020-01-190-6163?

There are 12 known substitutes for 3020-01-190-6163: 4820-00-900-2344, 4820-01-092-0343, 4820-01-121-2903 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 26M77-100 PIECE 55 4IN?

Key specifications for 26M77-100 PIECE 55 4IN: Pressure Angle: 22.5000 DEGREES; Teeth Quantity: 38; Face Nominal Width: 0.750 INCHES IN; Nominal Outside Diameter: 6.3990 INCHES IN. 7 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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