PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2161-ASprocket Wheel

Burch Company Inc, the · NSN 3020-01-340-1642 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-01-340-1642 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-340-1642. Primary manufacturer part number: 2161-A.
Features
  • Sprocket Wheel — FSC 3020
  • Hardness Rating Test Method: NOT RATED
  • Securing Location: AA END
  • Hole Location: ON HUB SURFACE
  • Teeth Row Quantity: 1
  • Securing Method: DRILLED HOLE
  • Flange Thickness: 0.625 INCHES NOMINAL IN
  • Drilled Hole Diameter: 0.406 INCHES NOMINAL IN
Applications
  • Applications requiring Steel construction
General Description

The Sprocket Wheel, cataloged under National Stock Number 3020-01-340-1642, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Burch Company Inc, the. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-01-340-1642
Primary Part Number2161-A
Item NameSprocket Wheel
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerBurch Company Inc, the
StatusACTIVE
Hardness Rating Test MethodNOT RATED
Securing LocationAA END
Hole LocationON HUB SURFACE
Teeth Row Quantity1
Securing MethodDRILLED HOLE
Flange Thickness0.625 INCHES NOMINAL IN
Drilled Hole Diameter0.406 INCHES NOMINAL IN
Pitch Diameter3.236 INCHES NOMINAL IN
Flange Outside Diameter2.250 INCHES NOMINAL IN
Bore Length1.500 INCHES NOMINAL IN
Securing Hole Quantity2
Face Width0.575 INCHES NOMINAL IN
Bore Diameter1.250 INCHES NOMINAL IN
Design FormPLAIN
Outside Diameter3.680 INCHES NOMINAL IN
Bore TypeSTRAIGHT
Tooth Pitch0.323 INCHES NOMINAL IN
Style DesignatorPLAIN
Distance From Hub End to Flange End1.188 INCHES NOMINAL AA END IN
MaterialSTEEL
Teeth Quantity Per Row10
Protruding Hub CharacteristicPLAIN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5950-00-506-79992161A INTERCHANGEABLE
Transformer,power
Lucent Technologies Inc Corporate Headquarters
5330-01-263-42512-381 INTERCHANGEABLE
Gasket
National Refrigeration & Air Conditioning Products Inc Dba Continental Refrigerator
Cross-Reference Index
Part NumberManufacturer
2161-A PRIMARY Burch Company Inc, the (USA)
80B10 Emerson Electric Co Browning Mfg Div (USA)
Related Parts
5950-00-506-7999INTERCHANGEABLE
TRANSFORMER,POWER
2161A
5330-01-263-4251INTERCHANGEABLE
GASKET
2-381

Frequently Asked Questions

What is NSN 3020-01-340-1642?

NSN 3020-01-340-1642 is a Sprocket Wheel, manufactured by Burch Company Inc, the, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-01-340-1642?

NSN 3020-01-340-1642 has 2 cross-referenced part numbers: 2161-A (Burch Company Inc, the), 80B10 (Emerson Electric Co Browning Mfg Div).

What NSN replaces 3020-01-340-1642?

There are 2 known substitutes for 3020-01-340-1642: 5950-00-506-7999, 5330-01-263-4251. Verify interchangeability with system specifications before substitution.

What are the specifications of 2161-A?

Key specifications for 2161-A: Hardness Rating Test Method: NOT RATED; Securing Location: AA END; Hole Location: ON HUB SURFACE; Teeth Row Quantity: 1. 23 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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