PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S-1021Impeller,fan,centrifugal

Zero Corp Mclean Engineering Div · NSN 4140-00-020-6953 · FSC 4140 · No Item Name Available
Verified by PartsTable
NSN 4140-00-020-6953 — this item is cataloged by the U.S. Government under National Stock Number 4140-00-020-6953. Primary manufacturer part number: S-1021.
Features
  • Impeller,fan,centrifugal — FSC 4140
  • 6 verified cross-references
  • Primary manufacturer: Zero Corp Mclean Engineering Div
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Impeller,fan,centrifugal, cataloged under National Stock Number 4140-00-020-6953, is classified within Federal Supply Class 4140 (No Item Name Available) of the Refrigeration, AC, and Air Circulating Equipment group. The primary manufacturer of record is Zero Corp Mclean Engineering Div. This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameImpeller,fan,centrifugal
FSC / FSG4140 — No Item Name Available (FSG 41)
ManufacturersZero Corp Mclean Engineering Div (CAGE 03522); Regal-Beloit Corporation Dba Fasco Group Div Cassville Division (CAGE 60399); Rotron Incorporated (CAGE 82877)
Technical Specifications
ParameterValue
NSN4140-00-020-6953
Primary Part NumberS-1021
Item NameImpeller,fan,centrifugal
FSC / FSG4140 / 41 — No Item Name Available
ManufacturerZero Corp Mclean Engineering Div
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5315-00-011-4813114813 INTERCHANGEABLE
Key,woodruff
Chrysler Realty Company Llc Dba Daimler Chrysler
4140-00-176-4369 INTERCHANGEABLE
Impeller,fan,centrifugal
4140-00-255-2458 INTERCHANGEABLE
Impeller,fan,centrifugal
4140-00-350-018140340-6 INTERCHANGEABLE
Impeller,fan,centrifugal
The Dewey Electronics Corporation
4140-00-481-3858 INTERCHANGEABLE
Impeller,fan,centrifugal
2805-00-554-641980171HC INTERCHANGEABLE
Valve,poppet,engine
Navistar Intl Corp Truck Br Ohio Plant
6130-00-578-6637102D20HYF1 INTERCHANGEABLE
Rectifier,metallic
Pd&e Electronics, Llc
3110-00-717-6960 INTERCHANGEABLE
Bearing,ball,annular
6240-00-889-17991157 INTERCHANGEABLE
Lamp,incandescent
American National Standards Institute Incorporated Dba American National Standards Institute
6625-00-900-3744310352 INTERCHANGEABLE
Ammeter
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
Cross-Reference Index
Part NumberManufacturer
S-1021 Zero Corp Mclean Engineering Div (USA)
AA300-128-1CW 5/16BORE/STEEL Regal-Beloit Corporation Dba Fasco Group Div Cassville Division (USA)
M-1965 Zero Corp Mclean Engineering Div (USA)
S-1157 Zero Corp Mclean Engineering Div (USA)
411133 Rotron Incorporated (USA)
KC-10046-1 Rotron Incorporated (USA)
Related Parts
5315-00-011-4813INTERCHANGEABLE
KEY,WOODRUFF
114813
4140-00-176-4369INTERCHANGEABLE
IMPELLER,FAN,CENTRIFUGAL
4140-00-255-2458INTERCHANGEABLE
IMPELLER,FAN,CENTRIFUGAL
4140-00-350-0181INTERCHANGEABLE
IMPELLER,FAN,CENTRIFUGAL
40340-6
4140-00-481-3858INTERCHANGEABLE
IMPELLER,FAN,CENTRIFUGAL
2805-00-554-6419INTERCHANGEABLE
VALVE,POPPET,ENGINE
80171HC
6130-00-578-6637INTERCHANGEABLE
RECTIFIER,METALLIC
102D20HYF1
3110-00-717-6960INTERCHANGEABLE
BEARING,BALL,ANNULAR
6240-00-889-1799INTERCHANGEABLE
LAMP,INCANDESCENT
1157
6625-00-900-3744INTERCHANGEABLE
AMMETER
310352
4140-00-948-7041INTERCHANGEABLE
IMPELLER,FAN,CENTRIFUGAL
5930-01-006-8473INTERCHANGEABLE
SWITCH,THERMOSTATIC
59T4000

Frequently Asked Questions

What is NSN 4140-00-020-6953?

NSN 4140-00-020-6953 is a Impeller,fan,centrifugal, manufactured by Zero Corp Mclean Engineering Div, classified under FSC 4140 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4140-00-020-6953?

NSN 4140-00-020-6953 has 6 cross-referenced part numbers: S-1021 (Zero Corp Mclean Engineering Div), AA300-128-1CW 5/16BORE/STEEL (Regal-Beloit Corporation Dba Fasco Group Div Cassville Division), M-1965 (Zero Corp Mclean Engineering Div), S-1157 (Zero Corp Mclean Engineering Div), 411133 (Rotron Incorporated) and 1 more.

What NSN replaces 4140-00-020-6953?

There are 12 known substitutes for 4140-00-020-6953: 5315-00-011-4813, 4140-00-176-4369, 4140-00-255-2458 and 9 more. Verify interchangeability with system specifications before substitution.

Is NSN 4140-00-020-6953 still in active supply?

NSN 4140-00-020-6953 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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