PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4127XPulley,groove

Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor · NSN 3020-00-517-1767 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-517-1767 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-517-1767. Primary manufacturer part number: 4127X.
Features
  • Pulley,groove — FSC 3020
  • Securing Location: AA END
  • Groove Shape: V
  • Groove Quantity: 2
  • Bore Length: 2.750 INCHES NOMINAL IN
  • Pitch Diameter: 15.500 INCHES NOMINAL IN
  • V Groove Angle in Deg: 38.0
  • Groove Depth: 0.750 INCHES NOMINAL IN
Applications
  • Applications requiring Iron Overall construction
General Description

The Pulley,groove, cataloged under National Stock Number 3020-00-517-1767, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3020-00-517-1767
Primary Part Number4127X
Item NamePulley,groove
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerQuincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
StatusCANCELLED
Securing LocationAA END
Groove ShapeV
Groove Quantity2
Bore Length2.750 INCHES NOMINAL IN
Pitch Diameter15.500 INCHES NOMINAL IN
V Groove Angle in Deg38.0
Groove Depth0.750 INCHES NOMINAL IN
Unable to DecodeUNABLE TO DECODE AND UNABLE TO DECODE
Integral Cooling VaneINCLUDED
Quantity1
Hub Outside Diameter2.750 INCHES NOMINAL AA END IN
Unable to DecodeUNABLE TO DECODE
Face Width3.000 INCHES NOMINAL IN
Design FormWEBBED
Keying Facility TypeKEYWAY
Securing MethodTHREADED HOLE(S)
Hub Outside Diameter2.750 INCHES NOMINAL BB END IN
Counterbore FeatureNOT INCLUDED
Hole LocationLOCATED 1-7/8 IN. FROM BB HUB FACE ON A 30 DEG ANGLE IN
Bore TypeSTRAIGHT
BearingsNOT INCLUDED
Bore FeatureINCLUDED
Web/spoke Relationship to Face CenterlineNOT OFFSET
Distance From Outside Flange/rim to Hub End and Location0.750 INCHES NOMINAL AA END IN
Standard V-Belt Section Designation for Which DesignedB
Lightening HoleNOT INCLUDED
Style DesignatorWEBBED OR SPOKED
Split Hub FeatureNOT INCLUDED
MaterialIRON OVERALL
Distance From Center of Bore to Bottom of Keyway0.8437 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6515-00-406-2037412-7 INTERCHANGEABLE
Stylus,electrocardi
Keysight Technologies Inc
3010-00-500-2921 INTERCHANGEABLE
Gearcase-Motor
5360-00-551-60943303420P22 INTERCHANGEABLE
Spring,helical,compression
Naval Ship Systems Command
4710-00-640-00904127 INTERCHANGEABLE
Tube,metallic
Sae International Dba Sae International
3950-00-722-7014C4124 INTERCHANGEABLE
Lining,friction
Continental Emsco Co Skagit Products Div
5930-00-820-954610670368 INTERCHANGEABLE
Switch,push
Us Army Aviation and Missile Command
4720-01-005-6145FG1078GGG3600 INTERCHANGEABLE
Hose Assembly,nonmetallic
Danfoss Power Solutions II, Llc
6130-01-018-36744-127 INTERCHANGEABLE
Power Supply
Eldec Aerospace Corp
5305-01-068-01744127 INTERCHANGEABLE
Screw,machine
Federal Screw Products, Inc.
4920-01-087-9156C4124 INTERCHANGEABLE
Panel,front,vibrex
Honeywell International Inc. Dba Honeywell Div Aerospace -Olathe Hums Div
Cross-Reference Index
Part NumberManufacturer
1806 Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
C4127 Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
1806L Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
4127X PRIMARY Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
4127 PRIMARY Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
C4124 Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
Related Parts
6515-00-406-2037INTERCHANGEABLE
STYLUS,ELECTROCARDI
412-7
3010-00-500-2921INTERCHANGEABLE
GEARCASE-MOTOR
5360-00-551-6094INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
3303420P22
4710-00-640-0090INTERCHANGEABLE
TUBE,METALLIC
4127
3950-00-722-7014INTERCHANGEABLE
LINING,FRICTION
C4124
5930-00-820-9546INTERCHANGEABLE
SWITCH,PUSH
10670368
4720-01-005-6145INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
FG1078GGG3600
6130-01-018-3674INTERCHANGEABLE
POWER SUPPLY
4-127
5305-01-068-0174INTERCHANGEABLE
SCREW,MACHINE
4127
4920-01-087-9156INTERCHANGEABLE
PANEL,FRONT,VIBREX
C4124
4730-01-092-1308INTERCHANGEABLE
TRAP ASSEMBLY
C4127
4930-01-147-4185INTERCHANGEABLE
REEL ASSEMBLY,HOSE
617-23-24B-SR

Frequently Asked Questions

What is NSN 3020-00-517-1767?

NSN 3020-00-517-1767 is a Pulley,groove, manufactured by Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor, classified under FSC 3020 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3020-00-517-1767?

NSN 3020-00-517-1767 has 6 cross-referenced part numbers: 1806 (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor), C4127 (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor), 1806L (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor), 4127X (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor), 4127 (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor) and 1 more.

What NSN replaces 3020-00-517-1767?

There are 12 known substitutes for 3020-00-517-1767: 6515-00-406-2037, 3010-00-500-2921, 5360-00-551-6094 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4127X?

Key specifications for 4127X: Securing Location: AA END; Groove Shape: V; Groove Quantity: 2; Bore Length: 2.750 INCHES NOMINAL IN. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3020-00-517-1767 still in active supply?

NSN 3020-00-517-1767 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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