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DMR® undersize keystock is used where close or undersized tolerances are required. Made from 1018 steel and 303 stainless steel.
Unit of Measure

Specifications

Size A&B

N/A 1/4” x 5/16” Undersize DMR_RectangularKeystock-Dimensions_01.jpg

Size A

N/A 1/4" in

Size B

N/A 5/16" in

Length

N/A 12.000 in

Wt. Per 12"

N/A 0.27 lb

Material

N/A 1018 Steel 303 Stainless Steel

Finish

N/A Zinc Plated

Tolerances

N/A Tolerances for Size 3/4" and smaller:
1018 Steel - Unplated = + .000 to -.003
1018 Steel - Zinc Plated = + .001 to -.002
Tolerances for Size 3/4" Thru 1-1/2":
1018 Steel - Unplated = + .000 to -.004
1018 Steel - Zinc Plated = + .001 to -.003
Tolerances for Size Over 1-1/2":
1018 Steel - Unplated = + .000 to -.005
1018 Steel - Zinc Plated = + .001 to -.004

Tolerances for Size 1/8" Thru 1/4":
303 Stainless - Squares = + .000 to -.002
303 Stainless - Flats = + .004 to -.004
Tolerances for Size 5/16" Thru 7/16":
303 Stainless - Squares = + .000 to -.003
303 Stainless - Flats = + .002 to -.002
Tolerances for Size 1/2" Thru 7/8":
303 Stainless - Squares = + .000 to -.004
303 Stainless - Flats = + .002 to -.002
Tolerances for Size 1":
303 Stainless - Squares = + .000 to -.006

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