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Imperial
Flat
Precision Ground Flat Stock, regular [GFS reg]
For example: 3/4" x 4" x 36" reg
Thickness
ground, tol. +/-0.001"
Width
ground or fine milled, tol. +0.005" / -0.000"
Length
milled or saw cut, tol. +0.125" / +0.500"
Precision Ground Flat Stock, oversize [GFS O/S]
For example: 3/4" x 4" x 36" O/S
Thickness
ground, tol. +0.010" / +0.015"
Width
ground or fine milled, tol. +0.010" / +0.015"
Length
milled or saw cut, tol. +0.125" / +0.500"
$mart Flat Stock [$mart]
Standardized Precision Blanks
For example: 3/4" x 4" x 24"
Thickness
ground or fine milled, tol. +0.015" / +0.035"
Width
saw cut, tol. +0.125" / +0.250"
Length
saw cut, tol. +0.500" / -0.000"
EDM Block hardened [EDM]
For example: 1/2" x 4" x 4"
Thickness
ground or fine milled, tol. +0.010" / -0.000"
Square dimensions
ground or fine milled, tol. min. +0.0125"
Grain structure is perpendicular in relation to top & bottom.
Round
Drill Rod [DR]
Precision Round Bars
For example: DR 3/4" x 36"
turned, ground & polished (TGP)
Tol. Dia. < 1/8" : +/-0.0003", L +0.125" / -0.000"
Tol. Dia. 1/8" to < 1/2" : +/-0.0005", L +0.125" / -0.000"
Tol. Dia. 1/2" to 2" : +/-0.001", L +0.125" / -0.000"
Cold Finished Rounds [CF]
Precision Round Bars
For example: CF 3/4" x 36"
drawn, smooth turned, ground or ground and polished
Tol. Dia. < 1/2" : +/-0.0015", L +tol. / -0.400"
Tol. Dia. 1/2" to < 1-1/2" : +/-0.0025", L +tol. / -0.400"
Tol. Dia. 1-1/2" to 4" : +/-0.004", L +tol. / -0.400"
These are maximum tolerances. For more exact tolerances call our sales team.
Decarb Free Rounds [DCF]
Oversize Round Bars
For example: DCF 3/4" x 36"
Diameter
peeled or rough-turned, tol. min. +0.010"
Length
saw cut, tol. +tol. / -0.400"
These steel rounds are oversized to finish to nominal diameter.
Exception
4XX Series Stainless steel, tol. Dia. +tol. / -0.000", L +tol. / -0.400"
Metric
Flat
Precision Ground Flat Stock Metric, regular [GFSM reg]
acc. to DIN 59350
For example: 20.0 x 100.0 x 1,000 mm
Thickness
ground or fine milled, tol. +0.05 / -0 mm
Width
ground or fine milled, tol. +0.2 / -0 mm
Length
milled or saw cut, tol. +35 / -0 mm
Exception
AISI 1045: T +0.25 / -0 mm; W +0.4 / -0 mm
Precision Ground Flat Stock Metric, oversize [GFSM O/S]
For example: 20.3 x 100.3 x 1,000 mm
Thickness
ground or fine milled, tol. +0.4 / -0 mm
Width
ground or fine milled, tol. +0.4 / -0 mm
Length
milled or saw cut, tol. +35 / -0 mm
$mart Flat Stock Metric [$martM]
Standardized Precision Blanks Metric
For example: 20.3 x 103 x 600 mm
Thickness
ground or fine milled, tol. +0.4 / -0 mm
Width
saw cut, tol. +3 / -0 mm
Length
saw cut, tol. +15 / -0 mm
Hard Flat Metric [HardM]
Hardened Standardized Blanks Metric
For example: 10.2 x 250 x 500 mm
Thickness
ground or fine milled, tol. +0.2 / -0 mm
Width
saw cut, tol. +10 / -0 mm
Length
saw cut, tol. +10 / -0 mm
Flatness tolerance: +0.2 / -0 mm across the item (aimed for)
Round
Drill Rod Metric [DRM]
Precision Round Bars Metric
For example: DRM 10.0 x 914 mm (36")
turned, ground & polished (TGP) - ISO h9
Tol. Dia. ≤ 10.0 mm : +0 / -0.036 mm, L +tol.
Tol. Dia. > 10.0 mm to 18.0 mm : +0 / -0.043 mm, L +tol.
Tol. Dia. > 18.0 mm to 25.0 mm : +0 / -0.052 mm, L +tol.
These are maximum tolerances. For more exact tolerances call our sales team.
Cold Finished Rounds Metric [CFM]
Precision Round Bars Metric
For example: CFM 10.0 x 914 mm (36")
drawn, smooth turned, ground or ground and polished - ISO h9
Tol. Dia. ≤ 10.0 mm : +0 / -0.036 mm, L +tol.
Tol. Dia. > 10.0 mm to 18.0 mm : +0 / -0.043 mm, L +tol.
Tol. Dia. > 18.0 mm to 25.0 mm : +0 / -0.052 mm, L +tol.
These are maximum tolerances. For more exact tolerances call our sales team.