Measurements are nominal. Holes are sized to accommodate
stud sizes.
TERMINAL & PUNCHED HOLE SIZE and AWG CHARTS
TERMINALS OF (TC) TINNED COPPER, (NPC) NICKEL
PLATED COPPER, AND (NPS) NICKEL PLATED STEEL
NOT AVAILABLE IN ALL SIZES OR AWG GUAGES
Measurements are nominal. Holes are sized to accommodate
stud sizes.
NOTE: FACTIONAL NUMBERS INDICATE CRIMPED RING TERMINALS - DECIMALS INDICATED SOLDER DIPPED AND PUNCH.
| CRIMPS FOR STUD SIZES | RING TERMINAL | TC | NPC | NPS | AVAILABLE PUNCH SIZES FOR TYPES "A" &
"D" Attn: These are hole sizes - one size over stud size recommended. |
| . | . | . | . | . | .062 (1/16) |
| . | . | . | . | . | .078 (5/64) |
| . | . | . | . | . | .093 (3/32) |
| #4 | YES | YES | . | . | .109 (7/64) |
| . | . | . | . | . | .125 (1/8) |
| #6 | YES | YES | YES | YES | .140 (9/64) |
| .. | . | .. | .. | . | .156 (5/32) |
| #8 | YES | YES | YES | YES | .171 (11/64) |
| . | . | . | .187 (3/16) | ||
| #10 | YES | YES | YES | YES | .203 (13/64) |
| . | . | . | . | . | .218 (7/32) |
| . | . | . | . | . | .234 (15/64) |
| . | . | . | . | . | .250 (1/4) |
| 1/4 | YES | YES | YES | YES | .265 (17/64) |
| . | . | . | . | . | .281 (9/32) |
| . | . | . | . | . | .296 (19/64) |
| . | . | . | . | . | .312 (5/16) |
| 5/16 | YES | YES | YES | YES | .328 (21/64) |
| . | . | . | . | . | .343 (11/32) |
| . | . | . | . | . | .359 (23/64) |
| . | . | . | . | . | .375 (3/8) |
| 3/8 | YES | YES | YES | YES | .390 (25/64) |
| . | . | . | . | . | .406 (13/32) |
| . | . | . | . | . | .421 (27/64) |
| . | . | . | . | . | .437 (7/16) |
| 7/16 | YES | YES | . | . | .453 (29/64) |
| . | . | . | . | . | .468 (15/32) |
| . | . | .484 (31/64) | |||
| 1/2 | YES | YES | .. | .. | .500 (1/2) |
| 5/8 | YES | YES | . | . | NOT AVAILABLE |
| 3/4 | YES | YES | . | . | NOT AVAILABLE |
| 7/8 | YES | YES | . | . | NOT AVAILABLE |
AWG (American Wire Gauge) diameter of elctrical wires
| WIRE SIZE (AWG) | WIRE DIA. INCHES | WIRE DIA. mm | AREA, CIRCULAR MILLS | FT/OHMS (Standard Annealed Copper ) |
| 40 | 0.003 | 0.08 | . | . |
| 38 | 0.004 | 0.10 | . | . |
| 36 | 0.005 | 0.13 | . | . |
| 34 | 0.006 | 0.16 | . | . |
| 32 | 0.008 | 0.20 | . | . |
| 30 | 0.010 | 0.26 | . | . |
| 28 | 0.013 | 0.32 | . | . |
| 26 | 0.016 | 0.41 | . | . |
| 24 | 0.020 | 0.51 | . | . |
| 22 | 0.025 | 0.64 | 642.4 | 61.95 |
| 20 | 0.032 | 0.81 | 1,022 | 98.5 |
| 18 | 0.040 | 1.02 | 1,624 | 157 |
| 16 | 0.051 | 1.29 | 2,583 | 249 |
| 14 | 0.064 | 1.63 | 4,107 | 396 |
| 12 | 0.080 | 2.05 | 6,530 | 630 |
| 10 | 0.102 | 2.59 | 10,380 | 1,001 |
| 8 | 0.129 | 3.26 | 16,510 | 1,592 |
| 6 | 0.162 | 4.12 | 26.250 | 2,531 |
| 4 | 0.204 | 5.19 | 41,740 | 4,025 |
| 2 | 0.258 | 6.54 | 66,370 | 6,400 |
| 1 | 0.289 | 7.35 | . | . |
| 1/0 | 0.324 | 8.25 | 105,500 | 10,180 |
| 2/0 | 0.365 | 9.27 | 133,100 | 12,830 |
| 3/0 | 0.410 | 10.40 | 167, 800 | 16,180 |
| 4/0 | 0.460 | 11.68 | 211,600 | 20,400 |
| 250MCM | 0.500 | 12.70 | . | . |
| 300MCM | 0.540 | 13.72 | . | . |
| 350MCM | 0.590 | 14.99 | . | . |
| 400MCM | 0.630 | 16.00 | . | . |
| 500MCM | 0.700 | 17.78 | . | . |