HINGED SPIRAL NAIL STOP COLLARS (S 61) |
 Available in the size range 4½" to 20", this device can be used in both upset and non-upset casing to provide maximum clearance during rotation. It has a groove in the middle into which a spiral nail can
be driven for improved grip on the casing. The broader band firmly grips the collar into position around the casing. |
HINGED SPIRAL NAIL STOP COLLARS (S 61) |
COLLAR TYPE / MAXIMUM O.D. |
Size |
Hinged Spiral |
in. |
in. |
mm. |
3 ½ |
- |
- |
4 ½ |
5.827 |
148 |
5 |
6.378 |
162 |
5 ½ |
6.850 |
174 |
6 ⅝ |
7.992 |
203 |
7 |
8.386 |
213 |
7 ⅝ |
9.016 |
229 |
8 ⅝ |
10.000 |
254 |
9 ⅝ |
11.024 |
280 |
10 ¾ |
12.165 |
309 |
11 ¾ |
13.189 |
335 |
13 ⅜ |
14.803 |
376 |
16 |
17.480 |
444 |
18 ⅝ |
20.118 |
511 |
20 |
21.496 |
546 |
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