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Precision Sized Continuous Ring Core Drills with Brass Nut 5/8", 3/4" and 16mm Thread
- Actual diameter of hole is size shown up to
.010" over.
- Customer specified length. Specify cutting
depth at ordering. Additional charge for lengths over 8" cutting depth.
- Most drills are stock items. Some sizes may
require up to two weeks delivery. Inquire at time of ordering.
- All drills can be retipped for new tool
performance at a reduced price.
- Barrel tubes can be economically replaced if
damaged.
- Designed to minimize runout.

| Diameter |
Fractional Equivalent* |
Part # 5/8" thread |
Part # 3/4" thread |
Part # 16mm thread |
Replacement Shank and Ring Part # No Nut |
| .370" |
-- |
235-3197 |
235-0197 |
235-4197 |
235-2197 |
| .375" |
-- |
235-3198 |
235-0198 |
235-4198 |
235-2198 |
| .440" |
-- |
235-3183 |
235-0183 |
235-4183 |
235-2183 |
| .468" |
7/16 |
235-3184 |
235-0184 |
235-4184 |
235-2184 |
| .500" |
-- |
235-3188 |
235-0188 |
235-4188 |
235-2188 |
| .525" |
1/2 |
235-3163 |
235-0163 |
235-4163 |
235-2163 |
| .530" |
-- |
235-3199 |
235-0199 |
235-4199 |
235-2199 |
| .560" |
-- |
235-3185 |
235-0185 |
235-4185 |
235-2185 |
| .625" |
-- |
235-3200 |
235-0200 |
235-4200 |
235-2200 |
| .640" |
-- |
235-3186 |
235-0186 |
235-4186 |
235-2186 |
| .650" |
5/8 |
235-3164 |
235-0164 |
235-4164 |
235-2164 |
| .671" |
-- |
235-3168 |
235-0168 |
235-4168 |
235-2168 |
| .675" |
-- |
235-3182 |
235-0182 |
235-4182 |
235-2182 |
| .700" |
11/16 |
235-3165 |
235-0165 |
235-4165 |
235-2165 |
| .750" |
-- |
235-3203 |
235-0203 |
235-4203 |
235-2203 |
| .760" |
-- |
235-3187 |
235-0187 |
235-4187 |
235-2187 |
| .775" |
3/4 |
235-3084 |
235-0084 |
235-4084 |
235-2084 |
| .781" |
-- |
235-3169 |
235-0169 |
235-4169 |
235-2169 |
| .812" |
-- |
235-3170 |
235-0170 |
235-4170 |
235-2170 |
| .838" |
13/16 |
235-3112 |
235-0112 |
235-4112 |
235-2112 |
| .855" |
-- |
235-3204 |
235-0204 |
235-4204 |
235-2204 |
| .875" |
-- |
235-3205 |
235-0205 |
235-4205 |
235-2205 |
| .880" |
-- |
235-3201 |
235-0201 |
235-4201 |
235-2201 |
| .900" |
7/8 |
235-3167 |
235-0167 |
235-4167 |
235-2167 |
| 1.000" |
-- |
235-3189 |
235-0189 |
235-4189 |
235-2189 |
| 1.025" |
1 |
235-3087 |
235-0087 |
235-4087 |
235-2087 |
| 1.150" |
1 1/8 |
235-3101 |
235-0101 |
235-4101 |
235-2101 |
| 1.250" |
-- |
235-3206 |
235-0206 |
235-4206 |
235-2206 |
| 1.260" |
-- |
235-3207 |
235-0207 |
235-4207 |
235-2207 |
| 1.275" |
1 1/4 |
235-3102 |
235-0102 |
235-4102 |
235-2102 |
| 1.375" |
-- |
235-3202 |
235-0202 |
235-4202 |
235-2202 |
| 1.400" |
1 3/8 |
235-3119 |
235-0119 |
235-4119 |
235-2119 |
| 1.525" |
1 1/2 |
235-3099 |
235-0099 |
235-4099 |
235-2099 |
| 1.650" |
1 5/8 |
235-3118 |
235-0118 |
235-4118 |
235-2118 |
| 1.775" |
1 3/4 |
235-3113 |
235-0113 |
235-4113 |
235-2113 |
| 2.025" |
2 |
235-3190 |
235-0190 |
235-4190 |
235-2190 |
*Fractional equivalent indicates nominal size of tube. Actual size of hole is fractional size shown plus up to 0.35" diameter.
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