PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7157Gear,spur

Del Mar Avionics, Llc · NSN 3020-00-134-0223 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-134-0223 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-134-0223. Primary manufacturer part number: 7157.
Features
  • Gear,spur — FSC 3020
  • Teeth Quantity: 46
  • Material Document and Classification: MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Hardness Rating: 27.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL
  • Pitch Diameter: 1.9160 INCHES NOMINAL IN
  • Body Style: WEBBED, SOLID
  • Face Nominal Width: 0.220 INCHES IN
  • Mounting Hole Nominal Diameter: 0.125 INCHES AXIALLY THROUGH BODY FIRST END IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 4130 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-134-0223, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Del Mar Avionics, Llc. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-134-0223
Primary Part Number7157
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerDel Mar Avionics, Llc
StatusACTIVE
Teeth Quantity46
Material Document and ClassificationMIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Hardness Rating27.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL
Pitch Diameter1.9160 INCHES NOMINAL IN
Body StyleWEBBED, SOLID
Face Nominal Width0.220 INCHES IN
Mounting Hole Nominal Diameter0.125 INCHES AXIALLY THROUGH BODY FIRST END IN
Pressure Angle20.0000 DEGREES
Bore Nominal Diameter0.375 INCHES BOTH ENDS IN
Nominal Outside Diameter2.000 INCHES IN
MaterialSTEEL COMP 4130 OVERALL
Mounting Hole Type and Quantity2 PLAIN AXIALLY THROUGH BODY FIRST END
Bore StylePLAIN BOTH ENDS
Body Recess Nominal Depth0.097 INCHES FIRST END IN
Style DesignatorHUBLESS, RECESSED BODY
Tooth FormSTANDARD
Attachment MethodMOUNTING HOLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5995-00-168-8429218-27722-2 INTERCHANGEABLE
Wiring Harness
Triumph Aerostructures, Llc Dba Triumph Aerostructures - Vought Integrated Programs Division
5935-00-499-730630-095-1 INTERCHANGEABLE
Connector,plug,electrical
Bell Textron Inc
5930-00-562-103723T7157 INTERCHANGEABLE
Switch,push-Pull
Fwd Seagrave Holdings Lp
5330-00-663-46577157 INTERCHANGEABLE
Gasket
Purolator Facet Inc. Div Parker Aerospace Filtration Division Dba Purolator Facet, in
6210-01-121-3310 INTERCHANGEABLE
Light,indicator
5330-01-135-22587157 INTERCHANGEABLE
Seal
Kirkhill Inc Div Kirkhill Inc, Haskon Division
5915-01-161-3275FTR-28880 INTERCHANGEABLE
Filter,band Pass
Precision Devices, Inc. Dba Precision Devices Inc
6530-01-283-68217157 INTERCHANGEABLE
Tube Assembly,respiratory Therap
Bird Products Corp
1650-01-425-0332936286 INTERCHANGEABLE
Piston,hydraulic Motor-Pump
Eaton Aerospace, Llc Dba Jackson South
Cross-Reference Index
Part NumberManufacturer
7157 Del Mar Avionics, Llc (USA)
Related Parts
5995-00-168-8429INTERCHANGEABLE
WIRING HARNESS
218-27722-2
5935-00-499-7306INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
30-095-1
5930-00-562-1037INTERCHANGEABLE
SWITCH,PUSH-PULL
23T7157
5330-00-663-4657INTERCHANGEABLE
GASKET
7157
6210-01-121-3310INTERCHANGEABLE
LIGHT,INDICATOR
5330-01-135-2258INTERCHANGEABLE
SEAL
7157
5915-01-161-3275INTERCHANGEABLE
FILTER,BAND PASS
FTR-28880
6530-01-283-6821INTERCHANGEABLE
TUBE ASSEMBLY,RESPIRATORY THERAP
7157
1650-01-425-0332INTERCHANGEABLE
PISTON,HYDRAULIC MOTOR-PUMP
936286

Frequently Asked Questions

What is NSN 3020-00-134-0223?

NSN 3020-00-134-0223 is a Gear,spur, manufactured by Del Mar Avionics, Llc, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-134-0223?

NSN 3020-00-134-0223 has 1 cross-referenced part number: 7157 (Del Mar Avionics, Llc).

What NSN replaces 3020-00-134-0223?

There are 9 known substitutes for 3020-00-134-0223: 5995-00-168-8429, 5935-00-499-7306, 5930-00-562-1037 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7157?

Key specifications for 7157: Teeth Quantity: 46; Material Document and Classification: MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Hardness Rating: 27.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL; Pitch Diameter: 1.9160 INCHES NOMINAL IN. 17 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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