PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1173Pulley,groove

The Crosby Group Llc Dba the Crosby Group · NSN 3020-01-218-4389 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-01-218-4389 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-218-4389. Primary manufacturer part number: 1173.
Features
  • Pulley,groove — FSC 3020
  • Material: COPPER ALLOY OVERALL
  • Face Width: 0.500 INCHES NOMINAL IN
  • Bore Feature: INCLUDED
  • Split Hub Feature: NOT INCLUDED
  • Lightening Hole: INCLUDED
  • Style Designator: WEBBED OR SPOKED
  • Outside Diameter: 3.000 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Alloy Overall construction
General Description

The Pulley,groove, cataloged under National Stock Number 3020-01-218-4389, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is The Crosby Group Llc Dba the Crosby Group. Government technical data includes 7 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-01-218-4389
Primary Part Number1173
Item NamePulley,groove
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerThe Crosby Group Llc Dba the Crosby Group
StatusACTIVE
MaterialCOPPER ALLOY OVERALL
Face Width0.500 INCHES NOMINAL IN
Bore FeatureINCLUDED
Split Hub FeatureNOT INCLUDED
Lightening HoleINCLUDED
Style DesignatorWEBBED OR SPOKED
Outside Diameter3.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-228-9517 INTERCHANGEABLE
Wrench,box and Open End,combinat
5210-00-239-04897036 INTERCHANGEABLE
Rule,multiple Folding
Kaufman Co
4730-00-360-52581-41NIPSL0NG INTERCHANGEABLE
Adapter,straight,pipe to Hose
Monarch Mfg Works Inc
5975-00-378-2013 INTERCHANGEABLE
Rod,ground
2805-00-390-33311173 INTERCHANGEABLE
Ring Set,piston
Spirolox Inc
5120-00-429-96291-173 INTERCHANGEABLE
Adapter,torque Wrench
Chief of Engineers Dept of Army
5905-00-815-1189 INTERCHANGEABLE
Resistor,fixed,wire Wound
5905-00-815-3381 INTERCHANGEABLE
Resistor,fixed,wire Wound
2530-01-063-1305KIT 1173LH INTERCHANGEABLE
Plunger,brake Shoe Actuating
Meritor Heavy Vehicle Systems, Llc
5310-01-122-9057 INTERCHANGEABLE
Nut,plain,hexagon
Cross-Reference Index
Part NumberManufacturer
1173 PRIMARY The Crosby Group Llc Dba the Crosby Group (USA)
787AS151 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
Related Parts
5120-00-228-9517INTERCHANGEABLE
WRENCH,BOX AND OPEN END,COMBINAT
5210-00-239-0489INTERCHANGEABLE
RULE,MULTIPLE FOLDING
7036
4730-00-360-5258INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE
1-41NIPSL0NG
5975-00-378-2013INTERCHANGEABLE
ROD,GROUND
2805-00-390-3331INTERCHANGEABLE
RING SET,PISTON
1173
5120-00-429-9629INTERCHANGEABLE
ADAPTER,TORQUE WRENCH
1-173
5905-00-815-1189INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
5905-00-815-3381INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
2530-01-063-1305INTERCHANGEABLE
PLUNGER,BRAKE SHOE ACTUATING
KIT 1173LH
5310-01-122-9057INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5930-01-176-3171INTERCHANGEABLE
SWITCH,SLIDE
5945-01-179-8623INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
1102011730

Frequently Asked Questions

What is NSN 3020-01-218-4389?

NSN 3020-01-218-4389 is a Pulley,groove, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-01-218-4389?

NSN 3020-01-218-4389 has 2 cross-referenced part numbers: 1173 (The Crosby Group Llc Dba the Crosby Group), 787AS151 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).

What NSN replaces 3020-01-218-4389?

There are 12 known substitutes for 3020-01-218-4389: 5120-00-228-9517, 5210-00-239-0489, 4730-00-360-5258 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1173?

Key specifications for 1173: Material: COPPER ALLOY OVERALL; Face Width: 0.500 INCHES NOMINAL IN; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED. 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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