Monotype Caster/Keyboard Interchangeable Screws
The table below is taken from various Monotype Book of Parts lists, Monotype Parts Lists and Symbol Conversion Lists for the Composition caster, Super caster and Keyboard (see note at the foot of the table). It shows for any given size of screw, all the symbol numbers that use that particular screw. Sizes are diameter and then length, in inches. The part number is shown in parentheses, taken from the Symbol Conversion List, or shown as (?) if not listed there. If the screw has a description of its head, this is shown beneath the part number. Apart from a very few, the list below has not been checked for screws above part 700 (a taper pin and not a screw). Also, sizes for only the one screw are omitted. If the part number, e.g. 290, is known, the shared screws can also be seen from Monotype Parts Numbers, but that list will not show any other part number that might share the same size. Part numbers that do share the same size may differ in head shape, etc. so may not be identical.
(The list below has been formatted to print out on A4 paper).
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1/8" × 3/16" | 1/8" × 3/16" | 1/8" × 15/64" | 1/8" × 1/4" | 1/8" × 17/64" | 1/8" × 5/16" |
cont. | cont. | cont. | cont. | (66) | cont. |
28G17 | (?) | (97) | 22SA5 | 25H10 | 296E15 |
10CK2 | 55B2 | 297E17 | 23SA5 | 25H12 | 44F8 |
11CK2 | (80) | 53SL6 | 14SC1 | 57KA18 | c4KA7 |
1CK150 | 63KB27 | 6SL14 | 19SD2 | 58KA18 | 4KA12 |
1CK191 | a64KB3 | 7SL14 | 12SE7 | 23SH5 | bKA16 |
16CT15 | 1/8" × 13/64" | 1/8" × 1/4" | 18SE11 | 23SH14 | 1KB4 |
10KA2 | (77) | (47) | 9SF6 | (68) | 18KC33 |
12KA24 | Countersunk | 48A22 | 9SF7 | Countersunk | a92KC11 |
24KB12 | 51KA6 | 24C11 | 39SL3 | 56A10 | (78) |
32KB5 | 67KB7 | 30C6 | 45SL8 | 11E8 | a14C7 |
a61KB8 | 1/8" × 7/32" | 146F2 | 46SL8 | 301E8 | 219F9 |
a77KB44 | (69) | 217F6 | 47SL8 | 92CT15 | 45H31 |
18KC31 | Grub | 75H6 | (73) | d4KA7 | 4KA21 |
34KC31 | a40A4 | 76H6 | 9A16 | 32KB14 | 5SD2 |
88KC10 | 3B14 | a4KA12 | 29G3 | 33SE1 | 23SL12 |
a90KC8 | 6CT23 | a4KA16 | a9KB3 | 32ST15 | (?) |
92KC9 | 48KC52 | 6KA29 | 42SE14 | 1/8" × 5/16" | 14C7 |
93KC11 | 92KC11 | 6KA72 | (50) | (54) | 147F7 |
19SC1 | (85) | 7KA21 | a3D12 | 37A23 | 1/8" × 3/8" |
3SF3 | Countersunk | 7KA80 | a50F13 | b40A2 | (94) |
62SH14 | a27KB20 | 23KB6 | 8G4 | b49A2 | 56A16 |
63SH2 | (99) | 32KB54 | 28SE9 | 62A23 | 34B9 |
12SL8 | Countersunk | a46KB33 | 3SF1 | 79A12 | 93KC13 |
13SL8 | 82KC8 | 58KB7 | (90) | 16C8 | 33SL7 |
32SL7 | 1/8" × 15/64" | 99KB12 | 51KA18 | 25D120 | (71) |
43SL17 | (58) | 18KC50 | (70) | 54D2 | Countersunk |
44SL15 | 25D26 | 25KC2 | Countersunk | 19E10 | 56A9 |
54SL15 | 4SD2 | 34KC34 | 31F10 | 20E1 | |
58SL4 | | 92KC13 | | 293E17 | |
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1/8" × 7/16" | 1/8" × 9/16" | 5/32" × 0.135" | 5/32" × 1/4" | 5/32" × 5/16" | 5/32" × 13/32" |
(53) | (52) | (176) | (134) | cont. | cont. |
36E49 | a51F9 | Grub | 42B4 | 91KB4 | (163) |
133E12 | 55KA3 | 76A3 | (137) | 20KC3 | 3SL2 |
209E6 | 18KC32 | 30C14 | 175F2 | 1SA3 | 5SL4 |
207F21 | 1/8" × 5/8" | 222E23 | 13G17 | 62SH3 | (152) |
219F5 | (128) | 245E6 | 12H48 | 62SH6 | Countersunk |
38H14 | Headless | 32CT10 | a55H3 | (?) | 10E11 |
66H11 | 4D1 | 57KA7 | 1SH2 | 97F3 | 5/32" × 3/8" |
59KA13 | 5D1 | 58KA7 | (161) | (164) | (143) |
99KB3 | 6D1 | 11KC14 | 26G3 | 49F11 | 107E6 |
a18KC43 | 82KC2 | 48SL3 | 73H3 | (510) | 92F3 |
a36KC10 | 1/8" × 3/4" | 5/32" × 3/16" | 21SA6 | Hexagon | 136F7 |
25SB14 | Headless | (145) | (178) | 10SA2 | 57H3 |
29SE6 | (127) | b16C8 | a63KB21 | (558) | 58H3 |
30SE2 | 4D3 | 92KB5 | a63KB22 | Countersunk | 8KA23 |
31SE2 | 5D3 | (552) | (562) | 10SA13 | 53KB14 |
33SH6 | 6D3 | a200F11 | 6A38 | (561) | a88KB3 |
56SH11 | 58SL22 | 5/32" × 7/32" | 5/32" × 5/16" | a36E88 | 20SG2 |
9SL2 | 4BA × 5/8" | (170) | (135) | 5/32" × 11/32" | 24SG1 |
(84) | (115) | 15D5 | 64A2 | (142) | 3SH2 |
Grub | 53H35 | 57D5 | 16E3 | 25D19 | 4SH2 |
37A22 | 25KA18 | 43SL3 | 26E31 | 77KB58 | a4SL4 |
40A16 | 5/32" × 1/8" | 43SL15 | 36E271 | 5/32" × 13/32" | (?) |
49A23 | (179) | 44SL3 | 137E2 | (134) | a13D4 |
62A22 | Grub | 44SL13 | 82F2 | 78A6 | (162) |
(51) | 44F28 | 54SL3 | 96F5 | 12D1 | 297E4 |
41KC6 | 92CT8 | 54SL13 | 97F7 | 118F3 | 1CK209 |
| 92CT9 | | 107F2 | 19KB2 | 16SD6 |
| 32ST8 | | 52KB4 | a34KC16 | |
| 32ST9 | | a63KB3 | a33SL9 | |
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3/16" × 13/32" | 3/16" × 7/16" | 3/16" × 7/16" | 3/16" × 1/2" | 3/16" × 9/16" | 3/16" × 11/16" |
(396) | cont. | cont. | cont. | cont. | (239) |
Grub | 301E6 | (406) | (232) | Hexagon | 92E9 |
301E14 | 70F4 | Grub | 92E11 | 211F9 | 245E7 |
50KB7 | 136F5 | 12SE12 | 245E10 | (254) | 25SB26 |
29SB7 | 1CK134 | 3/16" × 1/2" | 59KA2 | 60KC1 | 31SL2 |
(667) | 1CK136 | (?) | 22SG6 | 3/16" × 5/8" | (421) |
221F2 | 6KA5 | 17B6 | a6SL2 | (196) | a47H1 |
3/16" × 7/16" | 7KA3 | 70H30 | a7SL2 | 42A7 | 3/16" × 3/4" |
(199) | a6SD4 | (198) | a8SL2 | 7C2 | (195) |
6C1 | 33SL3 | 15B6 | 53SL3 | 222E24 | 11B3 |
36C8 | (216) | 3D2 | (3068) | 208F3 | 1G9 |
85F2 | Hexagon | 136F9 | Taper Head | a50F22 | 12KA7 |
161H3 | a3D7 | 1G11 | b18B1 | 1G12 | 12KA12 |
c8KA12 | 318E10 | 26G11 | a35B2 | a1KB12 | (?) |
c9KA12 | 16KA4 | 29G11 | a20C1 | 1CK189 | a36B4 |
50KB6 | 30KB3 | 70H4 | (237) | 12KA6 | (191) |
12KC4 | 31KB27 | 1KA15 | Bolt | 28KA7 | 43B2 |
18KC7 | 95KC4 | 12KA5 | 86F2 | 51KA14 | a23C1 |
34KC12 | 10SF12 | 12KA10 | 93KC16 | 46KB11 | 25D2 |
a14SA1 | (412) | 40KA4 | 23ST2 | 26SE1 | a19E6 |
30SC7 | 49F12 | 1KB8 | (429) | 293E13 | 1CK167 |
7SE3 | 161H16 | 5KB3 | Grub | 54SH7 | 50KB5 |
59SH3 | 5SD10 | 11KC3 | 318E22 | (?) | 53KB11 |
(?) | 56SL3 | 18KC37 | 12SE13 | 23C1 | a95KC6 |
3D7 | 59SH15 | 29KC4 | (420) | (203) | 1SE11 |
(204) | (242) | 37KC3 | a79E1 | Thin head | 7SE2 |
Thin Head | 58SL21 | 95KC9 | 3/16" × 9/16" | 1G13 | 33SL5 |
28B1 | (211) | 29SC2 | (215) | 33SL4 | |
17C2 | Grub | 36SH2 | Bolt | 6KA3 | |
216E7 | 302E20 | | 15B1 | 7KA5 | cont. |
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1/4" × 1/2" | 1/4" × 9/16" | 1/4" × 5/8" | 1/4" × 5/8" | 1/4" × 3/4 | 1/4" × 7/8" |
cont. | (278) | cont. | cont. | cont. | (288) |
25D70 | Hexagon | 107E2 | (353) | 77F2 | 1A3 |
26SA120 | 162H7 | 22F2 | 54D3 | a8KA14 | 3B7 |
26SL3 | 1SC2 | 24F1 | 68D2 | a9KA14 | 15B3 |
4SD7 | a18SG2 | 25H6 | (?) | 41KC4 | 302E5 |
59SL4 | 60SH7 | 25H7 | 33B2 | 41KC10 | a24F4 |
a27SG1 | 62SH22 | 25H11 | 29C2 | 61KC1 | 206F8 |
(348) | (285) | a70H30 | 94E2 | 8SE2 | 1G14 |
200E2 | a12H25 | 75H7 | 12H4 | a8SE12 | 12H43 |
217E2 | 66H3 | 76H8 | (281) | 25SG1 | 25H16 |
302E9 | a28KA7 | a8KA10 | 1A4 | (353) | 37H2 |
1CK202 | 31KB7 | a9KA10 | 3C24 | 54D3 | b53H6 |
29SG4 | 4SD10 | 12KA14 | 19E11 | 68D2 | 32CT4 |
34SG14 | 8SE4 | 34KB3 | 301E6 | (337) | 35KA2 |
58SL31 | 15SF1 | 46KB13 | a31KC19 | 107E5 | 46KB3 |
21ST2 | 10SH9 | 18KC14 | 7SA9 | 202F3 | 30KC5 |
(341) | 56SH3 | 18KC21 | 5SC2 | 45H25 | 39KC3 |
Hexagon | (343) | 30KC6 | (317) | a51KA26 | 56KC7 |
29SG5 | 1SE2 | a30KC63 | Hexagon | 19SA25 | 58KC1 |
1/4" × 17/32" | 1/4" × 5/8" | 22SA6 | 315E3 | 17SB2 | 27SE2 |
(271) | (286) | 23SA7 | Grub | 3SD4 | 29SE7 |
49F1 | 42A8 | 26SB2 | 137F2 | (307) | 34SG9 |
161H8 | 4B2 | 8SE10 | (327) | 22SG8 | 10SH27 |
59SH8 | 15B4 | 23SE2 | Hexagon | 1/4" × 13/16" | 23SH13 |
(329) | 25B2 | 23SH9 | b44F10 | (532) | 32SH5 |
77A3 | 3C6 | 23SH10 | 1/4" × 3/4 | 294E2 | 21SL4 |
(328) | 4C2 | 23SH12 | (287) | a302E10 | 42SL3 |
Hexagon | 19E1 | 36SH30 | a9B9 | 303E7 | (?) |
129E7 | 99E2 | 39SL22 | 23B2 | | 23B1 |
| 105E14 | | 22C2 | | 12H6 |
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1/4" × 7/8" | 1/4" × 1" | 1/4" × 1 1/8" | 1/4" × 1 1/4" | 1/4" × 1 7/16" | 5/16" × 1/2" |
cont. | cont. | cont. | cont. | cont. | (368) |
(312) | (276) | 302E10 | 23H3 | 92KC5 | Hexagon |
51KA27 | Hexagon | 51F5 | 76H7 | (?) | 3E1 |
23SL10 | 94F2 | 1G4 | 23SA6 | 8B1 | 57H2 |
(308) | 95F2 | 23H3 | a58SH6 | (333) | 67H6 |
Hexagon | 1SE3 | 76H7 | (?) | Countersunk | 21ST5 |
b18H3 | a8SE13 | 23SA6 | 8B2 | a60A6 | 5/16" × 5/8" |
b24H3 | (277) | a58SH6 | 11C1 | 1/4" × 1 1/2" | (380) |
15SH3 | Bolt | 1/4" × 1 3/16" | a50E | (?) | 1A9 |
1/4" × 15/16" | 41KC11 | (305) | (279) | 45F9 | 21SH3 |
(334) | | Stepped | Hexagon | (13908) | (659) |
23SL4 | | 12H8 | 19E2 | a37H9 | Hexagon |
(316) | | 10SH5 | 57KA10 | 32SH1 | 175E5 |
a1A4 | | (324) | 58KA10 | 1/4" × 1 13/16" | 45H27 |
75A9 | | Hexagon | (345) | (293) | 66H4 |
79A10 | 1/4" × 1 1/16" | 49D9 | b9B3 | 24F4 | a67H6 |
301E12 | (272) | 102F1 | b2SE7 | Plug | 19SA27 |
29SB5 | Hexagon | 109F1 | 1/4" × 1 3/8" | 220F6 | 56SH4 |
(344) | 76A5 | 1/4" × 1 1/4" | (?) | (354) | a57SH2 |
24B4 | 59D14 | (290) | a50E1 | Hexagon | 5/16" × 3/4" |
39F22 | 138E5 | 3B6 | (291) | a19E2 | (376) |
1/4" × 1" | (339) | 19D1 | 51F6 | a45F9 | 3D5 |
(304) | 53H54 | a1G22 | 206F7 | (269) | 175E9 |
a9B8 | 33KA8 | 58SH6 | (342) | Hexagon | a12H19 |
25B1 | 46KB38 | (289) | Hexagon | a2SE7 | 13SA2 |
b18KC21 | 29SB4 | a9B3 | 16SG8 | 1/4" × 1 15/16" | 16SB4 |
58SL28 | 1/4" × 1 1/8" | 215E2 | 1/4" × 1 7/16" | (335) | 5SF3 |
(?) | (289) | 302E10 | (292) | a55KC1 | 10SH4 |
24B1 | a9B3 | 51F5 | 3B5 | 20SC3 | |
| 215E2 | 1G4 | 41B17 | | cont. |
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The table above was first created from the list given on page 43 of the Book of Parts of "Monotype" Casting Machines Fifth edition. It was then compared with Monotype Parts Numbers (which had been created from the three Symbol Conversion Lists) and the many duplicates listed there but omitted from the original list were added, with screw sizes as shown in the various Monotype Parts Lists. Then Monotype Parts Numbers was searched for single screw/part number entries and again sizes were taken from the appropriate Monotype Parts Lists, and any one size that resulted in more than one screw was added to the table. Single entry screws were added to a new Screw Sizes table, which also lists all the screw sizes, with links to the present list where appropriate. Several anomalies were encountered whilst doing all this. One screw size might serve several different part numbers (e.g. 47, 50 and 73 are all 1/8" × 1/4"); some part numbers (eg 63) were not listed as screws; some screws had no size shown (e.g. 92CT6); some screws had no part numbers (e.g. 144F3, not listed in the Symbol Conversion List, or 14C7, with only a14C7 listed in the Symbol Conversion List, so presumably too old a version of screw); some screws changed size but kept the same part number (i.e. when they became countersunk, e.g. 31). Given that, and the risks of errors creeping in when entering/amending data, the present list should not be regarded as definitive.
Go to Monotype Screw Sizes
or Lists of Monotype Information
or Alembic home page
This page was written in 2015 by David Bolton and last updated 16 July 2015.