Standard Abrasives™ Unitized Wheel Steel Screw Mandrel 850034, 7/8 in x 1/4 in, Shank, 10 ea/Case

The Standard Abrasives™ Unitized Mandrel secures a 2-3? Standard Abrasives™ Unitized Wheel to a rotary tool for edge deburring and finishing applications. The silver button fits wheels with thicknesses of 1/8? or 1/4? and the black button accommodates wheels with thicknesses of 3/8? and 1/2?. Use this mandrel with a Standard Abrasives™ 913 or 933 Unitized Wheel (sold separately).
Special Price $8.65 Regular Price $10.18
UPC 00051115331800
3M ID 7000121879
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Get Inside Hard-To-Reach Areas

The Standard Abrasives™ Unitized Mandrel is a tool attachment designed to hold a small Standard Abrasives™ Unitized Wheel. The 1/4? shank diameter fits a 1/4? power tool collet or drill chuck. An integral part of the overall application, the mandrel helps operators effectively deburr and finish intricate or hard-to-reach areas.

Easy Attachment

Some Standard Abrasives™ Unitized Wheels come with Quick Change Attachment Styles: TS, TR and TP. This mandrel was especially designed for center hole (CH) unitized wheels without Quick Change attachments. The mandrel facilitates easy fastening of the abrasive wheel to the tool. It drives CH wheels with 2-3? diameters and a 3/8? center hole. Made with steel, it is exceptionally durable and long-lasting, so it can stand up to repeated wear and be used during heavy-duty applications.

Max. RPM for this mandrel is 25,100, enabling operators to use it effectively with high-speed wheels and tools.

The Standard Abrasives™ Mandrel is a helpful accessory for tackling hard-to-reach areas and getting inside tight spots on the workpiece.


  • Designed specifically for use with 2-3? Standard Abrasives™ 913 and 933 Unitized Wheels
  • 1/4? shank fits unitized wheel with 3/8? center hole
  • Versatile mandrel comes with caps that accommodate wheel thicknesses from 1/8? to 1/2?
  • Made of steel for enhanced durability, longevity and toughness
  • Attaches easily to die grinder or rotary tool
  • Max. RPM 25,100
More Information
3M ID 7000121879
Part number 850034
Keywords 3M, Standard Abrasives, Standard Abrasives Unitized Mandrel, unitized mandrel, mandrel for rotary tool, edge deburring, finishing applications, 2-3 inch Standard Abrasives Unitized Wheel, 913 Unitized Wheel, 933 Unitized Wheel, 1\/4 inch shank, 3\/8 inch center hole, steel mandrel, durable mandrel, die grinder attachment, rotary tool attachment, High-speed wheels, mandrel attachment, hard-to-reach areas, intricate deburring, manufacturing industry, metalworking, transport manufacturing, vehicle assembly, personal recreation vehicles, two-wheel vehicles.
Global Product Hierarchy Tools & Equipment > Mandrels & Adapters
Product Type simple
Quantity 0
Trademark 1 Standard Abrasives™
Country of Origin United States
Sales Unit EA
SAP Shelf Life In Days 1825
Base - Billing Unit EA
Base - Metric Gross Weight 31.8 G
Base - Item Quantity 1
Base - Unit EA
Unit of Use - Billing Unit EA
Unit of Use - Customary Cubic Dimension 11.554845944337558 ci
Unit of Use - Customary Gross Weight 0.07010699937479108 lbs
Unit of Use - Customary Net Weight 0.05842249947899256 lbs
Unit of Use - Metric Cubic Dimension 189.35 CCM
Unit of Use - Metric Net Weight 26.5 G
Unit of Use - Item Quantity 1
Unit of Use - Total Unit Quantity 1
Unit of Use - Previous Packaging Level Quantity 1
Unit of Use - Item Unit EACH
Unit of Use - Unit EA
Shipper - Billing Unit EA
Shipper - Customary Cubic Dimension 115.5539515803441 ci
Shipper - Customary Gross Weight 0.7010699937479107 lbs
Shipper - Customary Net Weight 0.5842249947899256 lbs
Shipper - Customary Height Dimension 4.0 in
Shipper - Customary Length Dimension 5.374803149606299 in
Shipper - Customary Width Dimension 5.374803149606299 in
Shipper - Metric Cubic Dimension 1893.59 CCM
Shipper - Metric Weight 0.318 KG
Shipper - Metric Net Weight 0.265 KG
Shipper - Metric Height Dimension 10.16 CM
Shipper - Metric Length Dimension 13.652 CM
Shipper - Metric Width Dimension 13.652 CM
Shipper - Item Quantity 10
Shipper - Total Unit Quantity 10
Shipper - Previous Packaging Level Quantity 10
Shipper - Previous Packaging Level Unit EACH
Shipper - Item Unit EACH
Shipper - Unit BAG
Pallet - Billing Unit EA
Pallet - Customary Cubic Dimension 90620.25998067744 ci
Pallet - Customary Gross Weight 426.9913093996709 lbs
Pallet - Customary Net Weight 327.16599708235833 lbs
Pallet - Customary Height Dimension 45.0 in
Pallet - Customary Length Dimension 47.99212598425197 in
Pallet - Customary Width Dimension 41.968503937007874 in
Pallet - Metric Cubic Dimension 1.485 M3
Pallet - Metric Net Weight 148.4 KG
Pallet - Metric Height Dimension 1.143 M
Pallet - Metric Length Dimension 1.219 M
Pallet - Metric Width Dimension 1.066 M
Pallet - Item Quantity 5600
Pallet - Total Unit Quantity 5600
Pallet - Previous Packaging Level Quantity 560
Pallet - Previous Packaging Level Unit BOX
Pallet - Item Unit EACH
Pallet - Unit PAL
Pallet - Pallet Layer Quantity 10
Pallet - Shipping Container Per Layer Quantity 56
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