PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11.781-1Disk,abrasive

Grobet File Company of America, Inc. Dba William Dixon · NSN 6520-00-523-2550 · FSC 6520 · No Item Name Available
Verified by PartsTable
NSN 6520-00-523-2550 — this item is cataloged by the U.S. Government under National Stock Number 6520-00-523-2550. Primary manufacturer part number: 11.781-1.
Features
  • Disk,abrasive — FSC 6520
  • Departure From Cited Document: AS MODIFIED BY SIZE
  • Abrasive Disk Type: PLAIN FLAT
  • Screen Grit Size Designator: 90
  • Mounting Opening Shape Style: ROUND
  • Mounting Method: ARBOR HOLE
  • Nondefinitive Spec/std Data: B CLASS AND 1 SIZE
  • Usage Design: DENTAL
Applications
  • Applications requiring Rubber Synthetic Backing construction
General Description

The Disk,abrasive, cataloged under National Stock Number 6520-00-523-2550, 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 Grobet File Company of America, Inc. Dba William Dixon. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: PG.

Technical Specifications
ParameterValue
NSN6520-00-523-2550
Primary Part Number11.781-1
Item NameDisk,abrasive
FSC / FSG6520 / 65 — No Item Name Available
ManufacturerGrobet File Company of America, Inc. Dba William Dixon
StatusACTIVE
Departure From Cited DocumentAS MODIFIED BY SIZE
Abrasive Disk TypePLAIN FLAT
Screen Grit Size Designator90
Mounting Opening Shape StyleROUND
Mounting MethodARBOR HOLE
Nondefinitive Spec/std DataB CLASS AND 1 SIZE
Usage DesignDENTAL
MaterialRUBBER SYNTHETIC BACKING
Outside Diameter0.859 INCHES MINIMUM AND 0.891 INCHES MAXIMUM IN
Diameter0.066 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN
Backing Abrasive Coating TypeCLOSED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssuePG
Verified Substitutes 3
5820-00-918-3746117811 INTERCHANGEABLE
Support,radio Receiver
The Boeing Company Div Defense
3020-01-050-9375117811 INTERCHANGEABLE
Gear,spur
L3harris Technologies, Inc Div Space & Airborne Systems
2990-01-214-745957-2121-2059 INTERCHANGEABLE
Control Assembly,push-Pull
Empigard Corp
Cross-Reference Index
Part NumberManufacturer
11.781-1 Grobet File Company of America, Inc. Dba William Dixon (USA)
Related Parts
5820-00-918-3746INTERCHANGEABLE
SUPPORT,RADIO RECEIVER
117811
3020-01-050-9375INTERCHANGEABLE
GEAR,SPUR
117811
2990-01-214-7459INTERCHANGEABLE
CONTROL ASSEMBLY,PUSH-PULL
57-2121-2059

Frequently Asked Questions

What is NSN 6520-00-523-2550?

NSN 6520-00-523-2550 is a Disk,abrasive, manufactured by Grobet File Company of America, Inc. Dba William Dixon, classified under FSC 6520 (No Item Name Available). Status: active.

What are the part numbers for NSN 6520-00-523-2550?

NSN 6520-00-523-2550 has 1 cross-referenced part number: 11.781-1 (Grobet File Company of America, Inc. Dba William Dixon).

What NSN replaces 6520-00-523-2550?

There are 3 known substitutes for 6520-00-523-2550: 5820-00-918-3746, 3020-01-050-9375, 2990-01-214-7459. Verify interchangeability with system specifications before substitution.

What are the specifications of 11.781-1?

Key specifications for 11.781-1: Departure From Cited Document: AS MODIFIED BY SIZE; Part Name Assigned by Controlling Agency: DISK ABRASIVE SILICON CARB 90 GRIT 0.859- 0.891" OD U/W AHP 100S; Abrasive Disk Type: PLAIN FLAT; Screen Grit Size Designator: 90. 13 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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