MS24693 fully threaded screws, 100 degree countersunk head
These screws are typically for non-structural usage because they are fully threaded and are available in both fine and course thread. You must use a table to find out dash number for diameter and length.
Options: ‘A’ is Anodized Aluminum screw
‘B’ is Uncoated Brass screw
‘BB’ Black Brass screw
‘C’ is Stainless steel
‘S’ is Carbon steel
Available in sizes from #4 to 3/8”
Current Spec: NASM 24693 (still uses MS24693 for part number)
Common sizes and lengths
Length |
Dash Number |
Dash Number |
||||||
Coarse Thread |
Fine Thread |
|||||||
.138-32 (#6) |
.164-32 (#8) |
.190-24 (#10 or 3/16”) |
.250-20 (1/4”) |
.138-40 (#6) |
.164-36 (#8) |
.190-32 (#10 or 3/16”) |
.250-28 (1/4”) |
|
.187 |
23 |
|
|
|
|
|
|
|
.250 |
24 |
46 |
|
|
224 |
246 |
268 |
|
.312 |
25 |
47 |
69 |
91 |
225 |
247 |
269 |
|
.375 |
26 |
48 |
70 |
92 |
226 |
248 |
270 |
292 |
.437 |
27 |
49 |
71 |
93 |
227 |
249 |
271 |
293 |
.500 |
28 |
50 |
72 |
94 |
228 |
250 |
272 |
294 |
.625 |
29 |
51 |
73 |
95 |
229 |
251 |
273 |
295 |
.750 |
30 |
52 |
74 |
96 |
230 |
252 |
274 |
296 |
.875 |
31 |
53 |
75 |
97 |
231 |
253 |
275 |
297 |
1.000 |
32 |
54 |
76 |
98 |
232 |
254 |
276 |
298 |
1.125 |
33 |
55 |
77 |
99 |
233 |
255 |
277 |
299 |
1.250 |
34 |
56 |
78 |
100 |
234 |
256 |
278 |
300 |
1.375 |
|
|
|
|
235 |
257 |
279 |
301 |
1.500 |
36 |
58 |
80 |
102 |
236 |
258 |
280 |
302 |
1.625 |
|
|
|
|
237 |
259 |
281 |
303 |
1.750 |
38 |
60 |
82 |
104 |
238 |
260 |
282 |
304 |
1.875 |
|
|
|
|
239 |
261 |
283 |
305 |
2.000 |
40 |
62 |
84 |
106 |
240 |
262 |
284 |
306 |
Example: MS24693S276 is a 1” 10-32 steel bolt
MS24694 Shanked screws, 100 degree countersunk head
These screws are typically for structural usage because they have a shank and are available in fine thread only. You must use a table to find out dash number for diameter and length.
Options: ‘A’ is Anodized Aluminum screw
‘C’ is Stainless steel
‘S’ is Carbon steel
Available in sizes from #8 to 5/8”
Current Spec: NASM 24694 (still uses MS24694 for part number)
Common sizes and lengths
Length |
Dash Number |
|||||
.164-32 (#8) |
.190-32 #10 |
.250-28 (1/4) |
||||
Dash no |
Grip |
Dash no |
Grip |
Dash no |
Grip |
|
.281 |
1 |
.094 |
46 |
.109 |
-- |
|
.344 |
2 |
.094 |
47 |
.109 |
92 |
.141 |
.406 |
3 |
.094 |
48 |
.109 |
93 |
.141 |
.469 |
4 |
.094 |
49 |
.109 |
94 |
.141 |
.531 |
5 |
.094 |
50 |
.109 |
95 |
.141 |
.594 |
6 |
.156 |
51 |
.109 |
96 |
.141 |
.656 |
7 |
.219 |
52 |
.188 |
97 |
.141 |
.719 |
8 |
.281 |
53 |
.250 |
98 |
.188 |
.781 |
9 |
.344 |
54 |
.313 |
99 |
.250 |
.844 |
10 |
.406 |
55 |
.375 |
100 |
.313 |
.906 |
11 |
.469 |
56 |
.438 |
101 |
.375 |
.969 |
12 |
.531 |
57 |
.500 |
102 |
.438 |
1.031 |
13 |
.594 |
58 |
.563 |
103 |
.500 |
1.094 |
14 |
.656 |
59 |
.625 |
104 |
.563 |
1.156 |
15 |
.719 |
60 |
.688 |
105 |
.625 |
1.219 |
16 |
.781 |
61 |
.750 |
106 |
.688 |
1.281 |
17 |
.844 |
62 |
.813 |
107 |
.750 |
1.344 |
18 |
.906 |
63 |
.875 |
108 |
.813 |
1.406 |
19 |
.969 |
64 |
.938 |
109 |
.875 |
1.469 |
20 |
1.031 |
65 |
1.000 |
110 |
.938 |
1.531 |
21 |
1.094 |
66 |
1.063 |
111 |
1.000 |
1.594 |
22 |
1.156 |
67 |
1.125 |
112 |
1.063 |
1.656 |
23 |
1.219 |
68 |
1.188 |
113 |
1.125 |
1.719 |
24 |
1.281 |
69 |
1.250 |
114 |
1.188 |
1.781 |
25 |
1.344 |
70 |
1.313 |
115 |
1.250 |
1.844 |
26 |
1.406 |
71 |
1.375 |
116 |
1.313 |
1.906 |
27 |
1.469 |
72 |
1.438 |
117 |
1.375 |
1.969 |
28 |
1.531 |
73 |
1.500 |
118 |
1.438 |
2.031 |
29 |
1.594 |
74 |
1.563 |
119 |
1.500 |
Example: MS24694S58 is a 1.031” long 10-32 steel bolt
MS27039 Structural Pan Head screw
These screws are typically for structural usage because they have an unthreaded shank. You must use a table to find out dash number for diameter and length.
Options: ‘DD’ is Anodized Aluminum screw
‘C’ is Stainless steel
‘-‘ is Carbon steel
Available in sizes from #8 to 1/2”
Current Spec: NASM 27039 (still uses MS27039 for part number)
Common sizes and lengths
.164-32 (#8) |
.190-32 (#10 or 3/16”) |
.250-28 (1/4”) |
||||||
Dash No |
Length |
Grip |
Dash No |
Length |
Grip |
Dash No |
Length |
Grip |
0804 |
.281 |
|
1-04 |
.281 |
|
4-04 |
.281 |
|
0805 |
.344 |
|
1-05 |
.344 |
|
4-05 |
.344 |
|
0806 |
.406 |
|
1-06 |
.406 |
|
4-06 |
.406 |
|
0807 |
.469 |
|
1-07 |
.469 |
|
4-07 |
.469 |
|
0808 |
.531 |
.094 |
1-08 |
.531 |
.062 |
4-08 |
.531 |
|
0809 |
.594 |
.156 |
1-09 |
.594 |
.125 |
4-09 |
.594 |
.062 |
0810 |
.656 |
.219 |
1-10 |
.656 |
.188 |
4-10 |
.656 |
.125 |
0811 |
.719 |
.281 |
1-11 |
.719 |
.250 |
4-11 |
.719 |
.188 |
0812 |
.781 |
.344 |
1-12 |
.781 |
.312 |
4-12 |
.781 |
.250 |
0813 |
.844 |
.406 |
1-13 |
.844 |
.375 |
4-13 |
.844 |
.312 |
0814 |
.906 |
.469 |
1-14 |
.906 |
.438 |
4-14 |
.906 |
.375 |
0815 |
.969 |
.531 |
1-15 |
.969 |
.500 |
4-15 |
.969 |
.438 |
0816 |
1.031 |
.594 |
1-16 |
1.031 |
.563 |
4-16 |
1.031 |
.500 |
0817 |
1.094 |
.656 |
1-17 |
1.094 |
.625 |
4-17 |
1.094 |
.563 |
0818 |
1.156 |
.719 |
1-18 |
1.156 |
.688 |
4-18 |
1.156 |
.625 |
0819 |
1.219 |
.781 |
1-19 |
1.219 |
.750 |
4-19 |
1.219 |
.688 |
0820 |
1.281 |
.844 |
1-20 |
1.281 |
.813 |
4-20 |
1.281 |
.750 |
0821 |
1.344 |
.906 |
1-21 |
1.344 |
.875 |
4-21 |
1.344 |
.813 |
0822 |
1.406 |
.969 |
1-22 |
1.406 |
.938 |
4-22 |
1.406 |
.875 |
0823 |
1.469 |
1.031 |
1-23 |
1.469 |
1.000 |
4-23 |
1.469 |
.938 |
0824 |
1.531 |
1.094 |
1-24 |
1.531 |
1.062 |
4-24 |
1.531 |
1.000 |
0825 |
1.594 |
1.156 |
1-25 |
1.594 |
1.125 |
4-25 |
1.594 |
1.062 |
0826 |
1.656 |
1.219 |
1-26 |
1.656 |
1.188 |
4-26 |
1.656 |
1.125 |
0827 |
1.719 |
1.281 |
1-27 |
1.719 |
1.250 |
4-27 |
1.719 |
1.188 |
0828 |
1.781 |
1.344 |
1-28 |
1.781 |
1.312 |
4-28 |
1.781 |
1.250 |
0829 |
1.844 |
1.406 |
1-29 |
1.844 |
1.375 |
4-29 |
1.844 |
1.312 |
0830 |
1.906 |
1.469 |
1-30 |
1.906 |
1.438 |
4-30 |
1.906 |
1.375 |
0831 |
1.969 |
1.531 |
1-31 |
1.969 |
1.500 |
4-31 |
1.969 |
1.438 |
0832 |
2.031 |
1.594 |
1-32 |
2.031 |
1.563 |
4-32 |
2.031 |
1.500 |
Example: MS27039-1-16 is a 1.031” long 10-32 steel bolt
MS35206 Non-Structural Pan Head screw cad plated steel
These screws are typically for non-structural usage because they have a fully threaded shank. Coarse thread only. You must use a table to find out dash number for diameter and length.
Available in sizes from #2 to 3/8”
Current Spec: NASM 35206 (still uses MS35206 for part number)
Common sizes and lengths
|
.112-40 (#4) |
.138-32 (#6) |
.164-32 (#8) |
.190-24 (#10) |
Length |
Dash No |
Dash No |
Dash No |
Dash No |
.125 |
201 |
224 |
239 |
- |
.188 |
202 |
225 |
240 |
258 |
.250 |
203 |
226 |
241 |
259 |
.312 |
204 |
227 |
242 |
260 |
.375 |
205 |
228 |
243 |
261 |
.438 |
206 |
229 |
244 |
262 |
.500 |
207 |
230 |
245 |
263 |
.562 |
320 |
327 |
331 |
337 |
.625 |
208 |
231 |
246 |
264 |
.750 |
209 |
232 |
247 |
265 |
.875 |
210 |
233 |
248 |
266 |
1.000 |
321 |
234 |
249 |
267 |
1.125 |
- |
328 |
332 |
338 |
1.250 |
- |
235 |
250 |
268 |
1.375 |
- |
236 |
333 |
339 |
1.500 |
322 |
237 |
251 |
269 |
Example: MS35206-247 is a 3/4” long 8-32 steel screw
MS35207 Non-Structural Pan Head screw cad plated steel
These screws are typically for non-structural usage because they have a fully threaded shank. Fine thread only. You must use a table to find out dash number for diameter and length.
Available in sizes from #2 to 3/8”
Current Spec: NASM 35207 (still uses MS35207 for part number)
Common sizes and lengths
|
.190-32 (#10) |
.250-28 (1/4) |
|
Length |
Dash No |
Dash No |
|
.188 |
258 |
|
|
.250 |
259 |
|
|
.312 |
260 |
276 |
|
.375 |
261 |
277 |
|
.438 |
262 |
278 |
|
.500 |
263 |
279 |
|
.625 |
264 |
280 |
|
.750 |
265 |
281 |
|
.875 |
266 |
282 |
|
1.000 |
267 |
283 |
|
1.250 |
268 |
284 |
|
1.500 |
269 |
285 |
Example: MS35207-277 is a 1” long 10-32 steel screw
MS35214, MS35215 Black coated Brass pan head screws
Typically used for mounting instruments as they are black coated and are non-magnetic. MS35214 are coarse thread, MS35215 are fine thread.
Coating: ‘C’ – after dash number is cadmium plated brass
Nothing after dash number is black chemical finish
Current spec: NASM 35214 and NASM35215 (still uses MS35214 and MS35215 for part number)
Length |
#4-40 (0.112”) |
#6-32 (0.138) |
#8-32 (0.164) |
#10-32 (0.190) |
.12 |
MS35214-10 |
MS35214-21 |
MS35214-36 |
|
.19 |
MS35214-11 |
MS35214-22 |
MS35214-37 |
|
.25 |
MS35214-12 |
MS35214-23 |
MS35214-38 |
MS35215-51 |
.31 |
MS35214-13 |
MS35214-24 |
MS35214-39 |
MS35215-52 |
.38 |
MS35214-14 |
MS35214-25 |
MS35214-40 |
MS35215-53 |
.44 |
MS35214-15 |
MS35214-26 |
MS35214-41 |
MS35215-54 |
.50 |
MS35214-16 |
MS35214-27 |
MS35214-42 |
MS35215-55 |
.56 |
MS35214-106 |
MS35214-108 |
MS35214-114 |
|
.62 |
MS35214-17 |
MS35214-28 |
MS35214-43 |
MS35215-56 |
.75 |
MS35214-18 |
MS35214-29 |
MS35214-44 |
MS35215-57 |
.88 |
MS35214-19 |
MS35214-30 |
MS35214-45 |
MS35215-58 |
1.00 |
MS35214-20 |
MS35214-31 |
MS35214-46 |
MS35215-59 |
1.12 |
MS35214-107 |
MS35214-109 |
MS35214-115 |
|
1.25 |
|
MS35214-32 |
MS35214-47 |
MS35215-60 |
1.38 |
|
MS35214-110 |
MS35214-116 |
|
1.50 |
|
MS35214-33 |
MS35214-48 |
MS35215-61 |
Example: MS35214-27 is a 6-32 screw 0.5” long with a black chemical finish
MS35215-55 is a 10-32 screw 0.5” long with a black chemical finish
AN525 WASHER HEAD SCREWS
These screws are the same strength as AN3, AN4 bolts but have a smaller head philips head that makes it more attractive for exterior use through the skin. Available in #8 coarse, #10 fine and ¼” fine thread. They also have a non-threaded shank.
Options: ‘-‘ between first and second dash numbers is for slotted screws
‘R’ between first and second dash numbers is for Phillips head
Current spec: NASM 525 (still uses AN525 for part number)
All available lengths with standard threads
Length |
Grip |
Dash Numbers |
||
.164-32 (#8) |
.190-32 (#10) |
.250-28 (1/4) |
||
.375 |
.031 |
832-6 |
10-6 |
416-6 |
.438 |
.063 |
832-7 |
10-7 |
416-7 |
.500 |
.125 |
832-8 |
10-8 |
416-8 |
.563 |
.156 |
832-9 |
10-9 |
416-9 |
.625 |
.219 |
832-10 |
10-10 |
416-10 |
.688 |
.281 |
832-11 |
10-11 |
416-11 |
.750 |
.344 |
832-12 |
10-12 |
416-12 |
.875 |
.469 |
832-14 |
10-14 |
416-14 |
1.000 |
.594 |
832-16 |
10-16 |
416-16 |
1.125 |
.719 |
832-18 |
10-18 |
416-18 |
1.250 |
.844 |
832-20 |
10-20 |
416-20 |
1.375 |
.969 |
832-22 |
10-22 |
416-22 |
1.500 |
1.094 |
832-24 |
10-24 |
416-24 |
1.625 |
1.219 |
832-26 |
10-26 |
416-26 |
1.750 |
1.344 |
832-28 |
10-28 |
416-28 |
1.875 |
1.469 |
832-30 |
10-30 |
416-30 |
2.000 |
1.594 |
832-32 |
10-32 |
416-32 |
Example: AN525-10R16 is a 1” long 10-32 screw with Phillips head
AN525-10-16 is a 1” long 10-32 screw with slotted head
AN526C, MS51957, MS51958 Stainless steel pan head screws
Fully threaded stainless steel screws. AN526C is no longer valid, and in most cases a commercial screw (aka hardware store) has been substituted. MS51957 is coarse thread, MS51958 is fine thread and have to meet the mil-spec requirements.
Options: ‘R’ in AN526 number is Phillips head
No code after dash number is 300 stainless
‘L’ after dash number is 316 stainless
‘B’ after dash number black oxide
Current Spec: NASM 51957 and NASM 51958 (still uses MS number for part number)
Common Lengths and diameters
|
Old number AN526C |
New Number |
||||
Length |
6-32 |
8-32 |
10-32 |
6-32 |
8-32 |
10-32 |
.250 |
-632R4 |
-832R4 |
-1032R4 |
MS51957-26 |
MS51957-41 |
MS51958-59 |
.312 |
-632R5 |
-832R5 |
-1032R5 |
MS51957-27 |
MS51957-42 |
MS51958-60 |
.375 |
-632R6 |
-832R6 |
-1032R6 |
MS51957-28 |
MS51957-43 |
MS51958-61 |
.438 |
-632R7 |
-832R7 |
-1032R7 |
MS51957-29 |
MS51957-44 |
MS51958-62 |
.500 |
-632R8 |
-832R8 |
-1032R8 |
MS51957-30 |
MS51957-45 |
MS51958-63 |
.625 |
-632R10 |
-832R10 |
-1032R10 |
MS51957-31 |
MS51957-46 |
MS51958-64 |
.750 |
-632R12 |
-832R12 |
-1032R12 |
MS51957-32 |
MS51957-47 |
MS51958-65 |
.875 |
-632R14 |
-832R14 |
-1032R14 |
MS51957-33 |
MS51957-48 |
MS51958-66 |
1.000 |
-632R16 |
-832R16 |
-1032R16 |
MS51957-34 |
MS51957-49 |
MS51958-67 |
1.125 |
-632R18 |
-832R18 |
-1032R18 |
MS51957-124 |
MS51957-127 |
|
1.250 |
-632R20 |
-832R20 |
-1032R20 |
MS51957-35 |
MS51957-50 |
MS51958-68 |
1.375 |
-632R22 |
-832R24 |
-1032R24 |
MS51957-125 |
MS51957-128 |
|
1.500 |
-632R24 |
-832R24 |
-1032R24 |
MS51957-36 |
MS51957-51 |
MS51958-69 |
AN526C-832R16 is a 1” long 8-32 stainless screw with Phillips head and is equivalent to MS51957-49.