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Precision Ground Rod, Cut to Length, With Chamfer
Inch Sizes 1/8" to 1-1/4" Diameter
h6 tolerance
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Fractional
Size
D x L
Dimensions, inch Description TechMet Stock #
Standard Grade Complementary Grade
D L C TMK-320 TMK-3028 TMK-326 TMK-3012
    1/8 x 1-1/2
0.1250
   1-1/2
0.015
    .125 x 1-1/2 w/ch
505115
503095
    1/8 x 2
0.1250
   2
0.015
    .125 x 2 w/ch
505109
503096
505305
505511
    1/8 x 2-1/4
0.1250
   2-1/4
0.015
    .125 x 2-1/4 w/ch
503075
    1/8 x 2-1/2
0.1250
   2-1/2
0.015
    .125 x 2-1/5 w/ch
505101
505541
    1/8 x 3
0.1250
   3
0.015
    .125 x 3 w/ch
505154
505514
    1/8 x 4
0.1250
   4
0.015
    .125 x 4 w/ch
505111
    3/16 x 2
0.1875
   2
0.015
    .1875 x 2 w/ch
505123
505515
    3/16 x 2-1/2
0.1875
   2-1/2
0.015
    .1875 x 2-1/2 w/ch
503182
505396
505517
    3/16 x 2-3/4
0.1875
   2-3/4
0.015
    .1875 x 2-3/4 w/ch
505141
    3/16 x 3
0.1875
   3
0.015
    .1875 x 3 w/ch
503183
505165
    1/4 x 1-1/2
0.2500
   1-1/2
0.015
    .250 x 1-1/2 w/ch
505103
    1/4 x 2
0.2500
   2
0.015
    .250 x 2 w/ch
505107
505307
505507
    1/4 x 2-1/2
0.2500
   2-1/2
0.015
    .250 x 2-1/2 w/ch
505124
503185
505324
505524
    1/4 x 3
0.2500
   3
0.015
    .250 x 3 w/ch
505125
503186
505325
505519
    1/4 x 3-1/4
0.2500
   3-1/4
0.015
    .250 x 3-1/4 w/ch
505197
    1/4 x 3-1/2
0.2500
   3-1/2
0.015
    .250 x 3-1/2 w/ch
502024
505326
    1/4 x 4
0.2500
   4
0.015
    .250 x 4 w/ch
505163
503187
505350
505549
    1/4 x 6
0.2500
   6
0.015
    .250 x 6 w/ch
505212
503189
505352
    5/16 x 2
0.3125
   2
0.015
    .3125 x 2 w/ch
505126
505526
    5/16 x 2-1/2
0.3125
   2-1/2
0.015
    .3125 x 2-1/2 w/ch
505127
503190
505353
505520
    5/16 x 3
0.3125
   3
0.015
    .3125 x 3 w/ch
505142
503191
505354
505521
    5/16 x 4
0.3125
   4
0.015
    .3125 x 4 w/ch
505117
503192
505355
505522
    5/16 x 6
0.3125
   6
0.015
    .3125 x 6 w/ch
505178
503193
505356
    3/8 x 2
0.3750
   2
0.015
    .375 x 2 w/ch
505128
505525
    3/8 x 2-1/2
0.3750
   2-1/2
0.015
    .375 x 2-1/2 w/ch
505129
503194
505357
505529
    3/8 x 3
0.3750
   3
0.015
    .375 x 3 w/ch
505130
503195
505330
505523
    3/8 x 3-1/2
0.3750
   3-1/2
0.015
    .375 x 3-1/2 w/ch
505143
505329
    3/8 x 4
0.3750
   4
0.015
    .375 x 4 w/ch
505144
503196
505328
    3/8 x 4-1/2
0.3750
   4-1/2
0.015
    .375 x 4-1/2 w/ch
505190
    3/8 x 5
0.3750
   5
0.015
    .375 x 5 w/ch
505213
503197
505358
    3/8 x 6
0.3750
   6
0.015
    .375 x 6 w/ch
505214
503198
505306
    7/16 x 2-1/2
0.4375
   2-1/2
0.031
    .4375 x 2-1/2 w/ch
505131
    7/16 x 2-3/4
0.4375
   2-3/4
0.031
    .4375 x 2-3/4 w/ch
505132
505542
    7/16 x 4
0.4375
   4
0.031
    .4375 x 4 w/ch
505177
505543
    1/2 x 2-1/2
0.5000
   2-1/2
0.031
    .500 x 2-1/2 w/ch
505133
505533
    1/2 x 3
0.5000
   3
0.031
    .500 x 3 w/ch
505134
503199
505334
505506
    1/2 x 3-1/2
0.5000
   3-1/2
0.031
    .500 x 3-1/2 w/ch
505140
505340
505513
    1/2 x 4
0.5000
   4
0.031
    .500 x 4 w/ch
505135
503200
505335
505538
    1/2 x 5
0.5000
   5
0.031
    .500 x 5 w/ch
505138
503201
505383
    1/2 x 6
0.5000
   6
0.031
    .500 x 6 w/ch
505136
503215
505395
505209
    9/16 x 3-1/2
0.5625
   3-1/2
0.031
    .5625 x 3-1/2 w/ch
505113
    5/8 x 3
0.6250
   3
0.031
    .625 x 3 w/ch
505100
505548
    5/8 x 3-1/2
0.6250
   3-1/2
0.031
    .625 x 3-1/2 w/ch
505102
503202
505384
    5/8 x 4
0.6250
   4
0.031
    .625 x 4 w/ch
505104
505341
505528
    5/8 x 5
0.6250
   5
0.031
    .625 x 5 w/ch
505106
505530
    5/8 x 6
0.6250
   6
0.031
    .625 x 6 w/ch
505137
503203
505385
505531
    3/4 x 3
0.7500
   3
0.031
    .750 x 3 w/ch
505108
503204
505386
505532
    3/4 x 4
0.7500
   4
0.031
    .750 x 4 w/ch
505110
503205
505342
505534
    3/4 x 5
0.7500
   5
0.031
    .750 x 5 w/ch
505112
505535
    3/4 x 6
0.7500
   6
0.031
    .750 x 6 w/ch
505114
503206
505343
505536
    7/8 x 4
0.8750
   4
0.031
    .875 x 4 w/ch
503218
    1 x 3
1.0000
   3
0.031
    1.000 x 3 w/ch
505116
503207
505387
505516
    1 x 4
1.0000
   4
0.031
    1.000 x 4 w/ch
505118
503208
505388
505518
    1 x 4-1/2
1.0000
   4-1/2
0.031
    1.000 x 4-1/2 w/ch
505162
    1 x 5
1.0000
   5
0.031
    1.000 x 5 w/ch
505120
503209
505389
505537
    1 x 6
1.0000
   6
0.031
    1.000 x 6 w/ch
505122
503210
505390
505539
    1-1/4 x 4-1/2
1.2500
   4-1/2
0.031
    1.250 x 4-1/2 w/ch
505217
503213
505393
    1-1/4 x 6
1.2500
   6
0.031
    1.250 x 6 w/ch
505218
503214
505394


Diameter Tolerance, h6 Ground, all lengths

Rod diameter (inch) Tolerance (inch)
0 ≤ 0.118 +0 / -0.00024
> 0.118 ≤ 0.236 +0 / -0.00031
> 0.236 ≤ 0.394 +0 / -0.00035
> 0.394 ≤ 0.709 +0 / -0.00043
> 0.709 ≤ 1.181 +0 / -0.00051
> 1.181 ≤ 1.250 +0 / -0.00063


Length (Ground, cut to length)

Diameter Length (inch) Tolerance (inch)
All ≤ 8 +1/16, -0
All > 8 + 1/8, -0


TOLERANCES, inch
Dia, inch Straightness
 
0<L≤2.362
2.362<L≤3.150
3.150<L≤3.937
3.937<L≤4.724
4.724<L≤5.905
 5.905<L≤7.874 
 7.874<L≤11.811 
 .079≤D<.158 0.0002 0.0003 0.0005 0.0008      
 .158≤D<.237 0.0002 0.0003 0.0005 0.0008    
 .237≤D<.315 0.0002 0.0003 0.0005 0.0008  
 .315≤D<.394 0.0002 0.0003 0.0006  
 .394≤D<.630 0.0002 0.0003 0.0006
 .630≤D.788 0.0002 0.0003 0.0006
 .788≤D≤1.260  0.0002 0.0003


TOLERANCES, inch
Dia, inch Roundness
 
0<L≤2.362
2.362<L≤3.15
3.15<L≤3.937
3.937<L≤4.724
4.724<L≤5.905
 5.905<L≤7.874 
 7.874<L≤11.811 
 .079≤D≤1.260  0.0001 max

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