Hole End Clock Mainspring

September 19, 2018 3:35 pm Published by Leave your thoughts

$9.89$39.89

What is being measured below is the sizes of the new mainspring to match up to the old one.

The width is measured first and matched up to the width below, then the thickness is measured with a micrometer, then the approximate length.

So, if you match up the width first, you can then see what spring is closest in thickness and length that will be closest to the old one.

The diameter column is what the spring will fit best, in the inside diameter of the brass barrel. WARNING: Wear safety glasses and gloves if working with a hole end mainsprings, they can and will be dangerous. If you choose, we have a mainspring replacement service, all you have to do is send us the entire barrel.

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Description

What is being measured below is the sizes of the new mainspring to match up to the old one.

The width is measured first and matched up to the width below, then the thickness is measured with a micrometer, then the approximate length.

So, if you match up the width first, you can then see what spring is closest in thickness and length that will be closest to the old one.

The diameter column is what the spring will fit best, in the inside diameter of the brass barrel. WARNING: Wear safety glasses and gloves if working with a hole end mainsprings, they can and will be dangerous. If you choose, we have a mainspring replacement service, all you have to do is send us the entire barrel.

Hole End Mainsprings Measurements to item #
WIDTH inch | mm THICKNESS inch | mm LENGTH inch DIAMETER mm Item # Price
3/32' | 2.3 .007' | 0.18 18' 14 CMH 100 $6
5/32' 4 .008' | 0.2 24' 17 CMH 101 $6
5/32' 4 .011' | 0.28 26 1/2' 22 CMH 103 $6
3/16' 4.8 .009' | 0.23 24' 17 CMH 104 $6
7/32' 5.6 .008' | 0.2 26' 20 CMH 105 $9
7/32' 5.6 .0095' 0.24 24' 18 CMH 106 $9
1/4' 6.4 .011' 0.28 15 3/4' MB CMH 109 $9
1/4' 6.4 .011' 0.28 39' 26 CMH 110 $9
9/32 7 .007' 0.18 44' 19 CMH 111 $9
9/32 7 .010' 0.25 18' MB CMH 112 $9
9/32' 7 .010' 0.25 39 1/2' 25 CMH 113 $9
5/16' 8 .008' 0.2 27' 18 CMH 114 $9
5/16' 8 .010' | 0.25 28' 19 CMH 116 $9
5/16' 8 .010' | 0.25 32' 23 CMH 117 $19
5/16' 8 .010' | 0.25 39 1/2' 25 CMH 118 $9
5/16' 8 .011' | 0.28 45 1/4' 28 CMH 119 $9
5/16' 8 .015' 0.38 40' 34 CMH 120 $13
5/16' 8 .016' 0.41 54' 38 CMH 121 $14
11/32' 8.7 .013' 0.33 66' 38 CMH 122 $14
23/64' 9 .011' 0.28 45 1/4' 28 CMH 124 $14
23/64 9 .0125' 0.32 18 1/2' MB CMH 125 $12
3/8 9.5 .011' 0.28 48' 26 CMH 126 $14
3/8' 9.5 .014' 0.36 48' 32 CMH 127 $14
3/8' 9.5 .017' 0.43 54' 38 CMH 128 $14
25/64' 10 .011' 0.28 45 1/4' 28 CMH 130 $14
25/64' 10 .012' | 0.32 73' 40 CMH 131 $14
7/16' 11 .010' | 0.25 32 1/4' 22 CMH 132 $12
7/12' 11 .011' | 0.28 49' 28 CMH 135 $14
7/16' 11 .0155' | 0.4 55 1/2' 38 CMH 136 $14
15/32' 12 .010' | 0.25 39 1/2' 25 CMH 137 $14
15/32' 12 .012' 0.3 53' 32 CMH 139 $14
15/32' 12 .014' 0.36 72' 41 CMH 140 $14
15/32' 12 .013' 0.33 27' 25H CMH 141 $25
1/2' 12.7 .013' 33 60' 36 CMH 142 $15
1/2 12.7 .015' 0.38 36' 25 CMH 143 $15
1/2 12.7 .016' 0.41 65' 32 CMH 144 $15
1/2' 12.7 .018' 0.46 60' 38 CMH 145 $14
33/64' 13 .010' 0.25 39 1/2' 25 CMH 146 $14
33/64' 13 .010' 0.28 45 1/2' 28 CMH 147 $14
33/64' .012' | 0.3 53' 32 CMH 148 $14
33/64' 13 .014' | 0.36 38' 30H CMH 150 $25
33/64' 13 .022' | 0.55 28' 32H CMH 151 $25
17/32' 13.5 .010' | 0.26 72' 34 CMH 149 $19
35/64' 14 .011' | 0.28 45 1/4' 28 CMH 152 $14
35/64' 14 .011' 0.28 49' 30 CMH 153 $16
35/64' 14 .012' 0.3 61' 35 CMH 155 $19
35/64' 14 .0155' 0.4 37 1/2' 36 CMH 156 $16
35/64 14 .013' 0.33 27' 25H CMH 158 $25
35/64 14 .014' 0.36 32' 30H CMH 159 $25
9/16' 14.3 .012' 0.3 39' 28 CMH 157 $16
9/16' 14.3 .015' 0.38 42' 28 CMH 160 $16
19/32' 15 .011' 0.28 45 1/4' 28 CMH 161 $16
19/32' 15 .011' | 0.28 49' 30 CMH 162 $16
19/32' 15 .012' | 0.3 53' 32 CMH 163 $16
5/8' 16 .010' | 0.25 39 1/2' 25 CMH 164 $16
5/8' 16 .011' | 0.28 45 1/4' 28 CMH 165 $16
5/8' 16 .011' | 0.28 49' 30 CMH 166 $16
5/8' 16 .013' 0.33 78' 34 CMH 167 $19
5/8' 16 .013' 0.33 105' 47 CMH 168 $25
5/8' 16 .014' 0.36 70' 39 CMH 169 $19
5/8' 16 .016' 0.41 59' 35 CMH 170 $19
5/8 16 .0175' 0.45 43 1/2' 37 CMH 171 $15
5/8 16 .018' 0.46 41' 36H CMH 172 $29
5/8' 16 .018' 0.46 72' 40 CMH 173 $19
5/8' 16 .018' 0.46 96' 53 CMH 174 $29
43/64' 17 .010' | 0.25 72' 34 CMH 176 $19
43/64' 17 .010' | 0.25 39 1/2' 25 CMH 177 $16
43/64' 17 .011' | 0.28 45 1/4' 28 CMH 178 $16
43/64' 17 .011' | 0.28 49' 30 CMH 179 $16
43/64' 17 .018' | 0.46 54' 40 CMH 180 $16
11/16' 17.5 .012' 0.3 72' 30 CMH 181 $19
11/16' 17.5 .014' 0.36 54' 34 CMH 182 $16
45/64' 18 .018' | 0.46 44' 38H CMH 183 $29
11/16' 17.5 .018' 0.46 96' 53 CMH 184 $29
45/64' 18 .011' 0.28 45 1/4' 28 CMH 185 $29
45/64 18 .011' 0.28 49' 30 CMH 186 $16
45/64 18 .012' 0.3 53' 32 CMH 187 $19
45/64' 18 .012' 0.3 61' 35 CMH 188 $19
45/64' 18 .016' 0.41 56' 39 CMH 189 $19
45/64' 18 .016' 0.41 61 1/2' 42 CMH 190 $19
45/64' 18 .0175' | 0.44 70' 45 CMH 191 $19
45/64' 18 .019' | 0.48 47' 35 CMH 192 $15
45/64' 18 .021' | 0.53 48' 40 CMH 193 $15
3/4' 19 .009' | 0.23 72' 33 CMH 194 $25
3/4' 19 .010' 0.25 39 1/2' 25 CMH 195 $16
3/4' 19 .011' 0.28 45 1/4' 28 CMH 196 $19
3/4' 19 .011' 0.28 49' 30 CMH 197 $19
3/4' 19 .011' 0.28 50' 30 CMH 198 $19
3/4 19 .012' 0.3 53' 32 CMH 199 $19
3/4 19 .012' 0.3 61' 35 CMH 200 $19
3/4' 19 .012' 0.3 75' 35 CMH 201 $19
3/4' .012' 0.3 90' 35 CMH 202 $25
3/4' 19 .014' | 0.36 90' 35 CMH 204 $25
3/4' 19 .015' | 0.38 72' 36 CMH 205 $25
3/4' 19 .0155' | 0.4 53 1/2' 37 CMH 206 $19
3/4' 19 .016' 0.41 53' 38H CMH 208 $29
3/4' 19 .016' 0.41 56' 39 CMH 209 $29
3/4' 19 .016' 0.41 60' 38 CMH 210 $19
3/4' 19 .017' 0.43 44' 35 CMH 211 $19
3/4 19 .017' 0.43 45' 36H CMH 212 $29
3/4 19 .0175' 0.44 70' 45 CMH 213 $19
3/4' 19 .018' 0.46 96' 53 CMH 214 $29
3/4' 19 .019' 0.48 68 1/2' 45 CMH 215 $19
25/32' 20 .011' | 0.28 49' 30 CMH 217 $19
25/32' 20 .012' | 0.3 53' 32 CMH 218 $19
25/32' 20 .012' | 0.3 61' 35 CMH 219 $19
25/32' 20 .0155' | 0.4 53' 38 CMH 220 $19
25/32' 20 .016' | 0.41 53' 38H CMH 221 $35
25/32' 20 .0175' 0.44 70' 45 CMH 222 $19
25/32' 20 .018' 0.46 76 1/2' 48 CMH 223 $22
53/64' 21 .011' 0.28 45 1/4' 28 CMH 224 $19
53/64' 21 .011' 0.28 49' 30 CMH 225 $19
53/64 21 .012' 0.3 53' 32 CMH 226 $19
53/64 21 .012' 0.3 61' 35 CMH 227 $19
53/64' 21 .0125' 0.32 67' 38 CMH 228 $19
53/64' 21 .015' 0.38 100' 50H CMH 229 $37
7/8' 22.2 .011' 0.28 49' 30 CMH 230 $16
7/8' 22.2 .012' | 0.3 53' 32 CMH 231 $19
7/8' 22.2 .012' | 0.3 61' 35 CMH 232 $19
7/8' 22.2 .0125' | 0.32 67' 38 CMH 233 $25
7/8' 22.2 .013' | 0.33 72' 33 CMH 234 $25
7/8' 22.2 .0155' | 0.4 50' 37 CMH 235 $19
7/8' 22.2 .0175' 0.44 70' 45 CMH 236 $19
7/8' 22.2 .018' 0.46 84' 49 CMH 237 $29
7/8' 22.2 .018' 0.46 96' 53 CMH 228 $29
7/8' 22.2 .0195' 0.5 56' 42 CMH 239 $19
61/64 24 .0175' 0.44 70' 45 CMH 240 $25
61/64 24 .018' 0.46 76 1/2' 48 CMH 241 $25
61/64' 24 .018' 0.46 80 1/2' 50 CMH 242 $25
63/64' 25 .018' 0.46 78 1/2' 49 CMH 243 $25
1' 25.4 .018' 0.46 96' 53 CMH 244 $29

Additional information

Weight 0.2 lbs
Mainspring

CMH 101, CMH 100, CMH 103, CMH 104, CMH 105, CMH 106, CMH 109, CMH 110, CMH 111, CMH 112, CMH 113, CMH 114, CMH 115, CMH 116, CMH 117, CMH 118, CMH 119, CMH 120, CMH 121, CMH 122, CMH 123, CMH 124, CMH 125, CMH 126, CMH 127, CMH 128, CMH 130, CMH 131, CMH 132, CMH 135, CMH 136, CMH 137, CMH 139, CMH 140, CMH 141, CMH 142, CMH 143, CMH 144, CMH 145, CMH 146, CMH 147, CMH 148, CMH 149, CMH 150, CMH 151, CMH 152, CMH 153, CMH 155, CMH 156, CMH 157, CMH 158, CMH 159, CMH 160, CMH 161, CMH 162, CMH 163, CMH 164, CMH 165, CMH 166, CMH 167, CMH 168, CMH 169, CMH 170, CMH 171, CMH 172, CMH 173, CMH 174, CMH 176, CMH 177, CMH 178, CMH 179, CMH 180, CMH 181, CMH 182, CMH 183, CMH 184, CMH 185, CMH 186, CMH 187, CMH 188, CMH 189, CMH 190, CMH 191, CMH 192, CMH 193, CMH 194, CMH 195, CMH 196, CMH 197, CMH 198, CMH 199, CMH 201, CMH 202, CMH 204, CMH 205, CMH 206, CMH 208, CMH 209, CMH 210, CMH 211, CMH 212, CMH 213, CMH 214, CMH 215, CMH 216, CMH 217, CMH 218, CMH 220, CMH 221, CMH 222, CMH 223, CMH 224, CMH 225, CMH 226, CMH 227, CMH 228, CMH 229, CMH 230, CMH 231, CMH 232, CMH 233, CMH 234, CMH 235, CMH 236, CMH 237, CMH 238, CMH 239, CMH 240, CMH 241, CMH 242, CMH 243, CMH 244

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