PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RWFB28Impeller,fan,axial

Cospolich Inc. · NSN 4140-01-707-9557 · FSC 4140 · No Item Name Available
Verified by PartsTable
NSN 4140-01-707-9557 — this item is cataloged by the U.S. Government under National Stock Number 4140-01-707-9557. Primary manufacturer part number: RWFB28.
Features
  • Impeller,fan,axial — FSC 4140
  • 3 verified cross-references
  • Primary manufacturer: Cospolich Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Impeller,fan,axial, cataloged under National Stock Number 4140-01-707-9557, 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 Cospolich Inc.. This item has 3 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: Active.

Technical Specifications
ParameterValue
NSN4140-01-707-9557
Primary Part NumberRWFB28
Item NameImpeller,fan,axial
FSC / FSG4140 / 41 — No Item Name Available
ManufacturerCospolich Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6105-00-448-4290 INTERCHANGEABLE
Motor,drive
4720-01-206-5107R50300CC-06-0077 INTERCHANGEABLE
Hose Assembly,nonmetallic
Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division
4730-01-442-459550408 INTERCHANGEABLE
Fitting,lubrication
Tex-a-Draulics Inc
4130-01-707-9345RWOVL92 INTERCHANGEABLE
Condenser,refrigeration
Cospolich Inc.
4130-01-707-9379RWCD95 INTERCHANGEABLE
Condenser,refrigeration
Cospolich Inc.
4130-01-707-9396RUT312 INTERCHANGEABLE
Compressor Unit,refrigeration
Cospolich Inc.
4130-01-707-9501RWOVL95 INTERCHANGEABLE
Condenser,refrigeration
Cospolich Inc.
4130-01-707-9517RWCM88 INTERCHANGEABLE
Condenser,refrigeration
Cospolich Inc.
4130-01-707-9527RWRT53 INTERCHANGEABLE
Receiver,liquid Refrigerant
Cospolich Inc.
5945-01-707-9860RWRLY121 INTERCHANGEABLE
Relay,motor Driven
Cospolich Inc.
Cross-Reference Index
Part NumberManufacturer
RWFB28 PRIMARY Cospolich Inc. (USA)
50408 ITEM 49 Cospolich Inc. (USA)
50408 Cospolich Inc. (USA)
Related Parts
6105-00-448-4290INTERCHANGEABLE
MOTOR,DRIVE
4720-01-206-5107INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
R50300CC-06-0077
4730-01-442-4595INTERCHANGEABLE
FITTING,LUBRICATION
50408
4130-01-707-9345INTERCHANGEABLE
CONDENSER,REFRIGERATION
RWOVL92
4130-01-707-9379INTERCHANGEABLE
CONDENSER,REFRIGERATION
RWCD95
4130-01-707-9396INTERCHANGEABLE
COMPRESSOR UNIT,REFRIGERATION
RUT312
4130-01-707-9501INTERCHANGEABLE
CONDENSER,REFRIGERATION
RWOVL95
4130-01-707-9517INTERCHANGEABLE
CONDENSER,REFRIGERATION
RWCM88
4130-01-707-9527INTERCHANGEABLE
RECEIVER,LIQUID REFRIGERANT
RWRT53
5945-01-707-9860INTERCHANGEABLE
RELAY,MOTOR DRIVEN
RWRLY121
4110-01-707-9861INTERCHANGEABLE
PANEL,CONTROL,ELECTRICAL-ELECTRO
RWTT65-PM(L)(R10F10)
5910-01-707-9862INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
RWCP121

Frequently Asked Questions

What is NSN 4140-01-707-9557?

NSN 4140-01-707-9557 is a Impeller,fan,axial, manufactured by Cospolich Inc., classified under FSC 4140 (No Item Name Available). Status: active.

What are the part numbers for NSN 4140-01-707-9557?

NSN 4140-01-707-9557 has 3 cross-referenced part numbers: RWFB28 (Cospolich Inc.), 50408 ITEM 49 (Cospolich Inc.), 50408 (Cospolich Inc.).

What NSN replaces 4140-01-707-9557?

There are 12 known substitutes for 4140-01-707-9557: 6105-00-448-4290, 4720-01-206-5107, 4730-01-442-4595 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of RWFB28?

Key specifications for RWFB28: End Item Identification: SHIPBOARD MODULAR COMBINATION REFRIGERATOR/FREEZER; Part Name Assigned by Controlling Agency: CONDENSER FAN BLADE, REFRIGERATOR. 2 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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