PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40304Bur,dental,engine Test

Bell Intl Inc · NSN 6520-01-309-3531 · FSC 6520 · No Item Name Available
Verified by PartsTable
NSN 6520-01-309-3531 — this item is cataloged by the U.S. Government under National Stock Number 6520-01-309-3531. Primary manufacturer part number: 40304.
Features
  • Bur,dental,engine Test — FSC 6520
  • Purchase Description Identification: 1U601-40301
  • General Characteristics Item Description: REPAIR PART FOR DENTAL ENGINE,LABORATORY,MDL 40-L
  • 2 verified cross-references
  • Primary manufacturer: Bell Intl Inc
Applications
  • Mechanical power generation
  • Drive system operation
  • Auxiliary equipment operation
General Description

The Bur,dental,engine Test, cataloged under National Stock Number 6520-01-309-3531, is classified within Federal Supply Class 6520 (No Item Name Available) of the Medical, Dental, and Veterinary Equipment group. The primary manufacturer of record is Bell Intl Inc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 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. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6520-01-309-3531
Primary Part Number40304
Item NameBur,dental,engine Test
FSC / FSG6520 / 65 — No Item Name Available
ManufacturerBell Intl Inc
StatusACTIVE
Purchase Description Identification1U601-40301
General Characteristics Item DescriptionREPAIR PART FOR DENTAL ENGINE,LABORATORY,MDL 40-L
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
2915-00-098-9010 INTERCHANGEABLE
Distributor,engine
4720-00-145-6212P10-5535 INTERCHANGEABLE
Hose,preformed
Donaldson Company, Inc.
3040-00-270-80514500-239 INTERCHANGEABLE
Connecting Link,rigid
Tyee Aircraft Inc Div Tyee Aircraft
5331-00-290-94861-1345-4-6 INTERCHANGEABLE
O-Ring
The Boeing Company Div Defense
2520-00-309-391465A81D953 INTERCHANGEABLE
Housing,gearbox
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
2520-00-340-212065A81D947 INTERCHANGEABLE
Cover,gearbox
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
5841-00-518-678940301 INTERCHANGEABLE
Plate,chassis
Frontgrade Technologies Inc.
5915-00-519-448830707 INTERCHANGEABLE
Filter,radio Frequency Interfere
Raytheon Company Dba Raytheon
6680-00-530-0487403-04 INTERCHANGEABLE
Indicator,sight,liquid
Ernst, John C & Co, Inc.
9540-00-540-594110133-0701 INTERCHANGEABLE
Angle,structural
Transtar Metals Corp
Cross-Reference Index
Part NumberManufacturer
40301 Bell Intl Inc (USA)
40304 PRIMARY Bell Intl Inc (USA)
Related Parts
2915-00-098-9010INTERCHANGEABLE
DISTRIBUTOR,ENGINE
4720-00-145-6212INTERCHANGEABLE
HOSE,PREFORMED
P10-5535
3040-00-270-8051INTERCHANGEABLE
CONNECTING LINK,RIGID
4500-239
5331-00-290-9486INTERCHANGEABLE
O-RING
1-1345-4-6
2520-00-309-3914INTERCHANGEABLE
HOUSING,GEARBOX
65A81D953
2520-00-340-2120INTERCHANGEABLE
COVER,GEARBOX
65A81D947
5841-00-518-6789INTERCHANGEABLE
PLATE,CHASSIS
40301
5915-00-519-4488INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
30707
6680-00-530-0487INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
403-04
9540-00-540-5941INTERCHANGEABLE
ANGLE,STRUCTURAL
10133-0701
5950-00-702-6625INTERCHANGEABLE
TRANSFORMER,POWER
8912002
1680-00-887-1920INTERCHANGEABLE
ACTUATOR,ELECTROMECHANICAL,ROTAR
4030-1

Frequently Asked Questions

What is NSN 6520-01-309-3531?

NSN 6520-01-309-3531 is a Bur,dental,engine Test, manufactured by Bell Intl Inc, classified under FSC 6520 (No Item Name Available). Status: active.

What are the part numbers for NSN 6520-01-309-3531?

NSN 6520-01-309-3531 has 2 cross-referenced part numbers: 40301 (Bell Intl Inc), 40304 (Bell Intl Inc).

What NSN replaces 6520-01-309-3531?

There are 12 known substitutes for 6520-01-309-3531: 2915-00-098-9010, 4720-00-145-6212, 3040-00-270-8051 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40304?

Key specifications for 40304: Purchase Description Identification: 1U601-40301; General Characteristics Item Description: REPAIR PART FOR DENTAL ENGINE,LABORATORY,MDL 40-L; End Item Identification: 6520-01-147-4654; Part Name Assigned by Controlling Agency: BUR DENTAL ENGINE TEST E.I. NSN 6520-01-147-4654 DEN ENGINE LAB. 4 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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