MS17984 at a glance
Where to buyCurrent standard: NASM17984. MS17984 is now controlled by NASM17984 (MS17984F, Notice 1). The part numbers do not change: MS17984C303 is still the number on drawings, IPCs and bags, and it is the same part. Order it by that number; the current document is NASM17984.
Specification
| Item | Value |
|---|---|
| Current standard | NASM17984 (part numbers unchanged) |
| Type | Quick release pin, button handle |
| Material | Shank and spindle: corrosion-resistant steel 17-4PH (AMS 5643, condition H-900) or PH15-7Mo (AMS 5520 or AMS 5657, condition CH-900), Rockwell C40 min; locking elements: CRES 440C (AMS 5630 or AMS 5880); handle and button: CRES 303 or aluminum alloy 380, 2011, 2017, 2024 or 6061-T6; collar: CRES 301, 302, 303 or 304; spring and attaching ring or link: CRES 17-7PH (AMS 5678) or CRES 302 |
| Finish | CRES parts passivated (QQ-P-35); aluminum alloy parts anodized (MIL-A-8625, Type I or II, Class 2) or chemical film (MIL-C-5541, Class 1A); handles black |
| Status | Check the current issue before design use. Cancelled by Notice 1 (Nov 1998) and superseded by NASM17984; the notice states the part numbers are identical. |
Dimensions by size
| Dimension, in | 3/16 | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A max — A dia, max | .1885 | .2485 | — | .3735 | .4360 | .4985 | .5610 | .6235 | .7485 | .8735 | .9985 |
| A min — A dia, min | — | .2470 | .3095 | .3720 | .4345 | .4970 | .5595 | .6220 | .7470 | .8720 | .9970 |
| B — B, ±.005 | — | .289 | .375 | .440 | .509 | .594 | .666 | .750 | .887 | 1.046 | 1.219 |
| C — C, +.000 −.040 | — | — | — | .365 | .380 | .460 | .510 | .580 | .670 | .760 | .890 |
| D max — D dia, max | .310 | .310 | .310 | .390 | .390 | .565 | .565 | .580 | .700 | .840 | .950 |
| D min — D dia, min | — | — | .250 | .300 | .300 | .435 | .435 | .450 | .570 | .700 | .750 |
| E max — E dia, max | .440 | .440 | .490 | .570 | .625 | — | .765 | .865 | 1.000 | 1.130 | 1.250 |
| E min — E dia, min | .310 | .310 | .410 | .450 | .550 | .600 | .680 | .750 | .865 | .980 | 1.175 |
| F max — F dia, max | .800 | — | 1.135 | 1.135 | 1.400 | 1.400 | 1.650 | 1.700 | 1.900 | 2.250 | 2.250 |
| F min — F dia, min | .720 | .720 | .810 | .875 | .940 | 1.300 | 1.340 | 1.530 | 1.790 | 2.120 | 2.120 |
| G — G, max | .830 | .890 | .930 | 1.040 | 1.160 | 1.190 | 1.410 | 1.500 | 1.680 | 1.985 | 2.140 |
| H — H, min | .480 | — | — | .620 | .620 | .720 | .950 | .950 | 1.140 | 1.270 | 1.490 |
| Double shear, min, lb | — | 9200 | 14400 | 20600 | 28000 | 36800 | 46000 | 57500 | 82500 | 112500 | 147000 |
| Recommended hole dia, max | .194 | .254 | .3165 | .379 | .4425 | .505 | .5675 | .630 | .757 | .882 | 1.010 |
| Recommended hole dia, min | .190 | .250 | .3125 | .375 | .4375 | .500 | .5625 | .625 | .750 | .875 | 1.000 |
Dimensions in inches, as tabulated in the standard (letters as on its drawing). Loads in pounds.
Part numbers
Every part number by nominal diameter and grip. The standard governs.
3/1697 part numbers
1/497 part numbers
5/1697 part numbers
3/897 part numbers
7/1695 part numbers
1/295 part numbers
9/1693 part numbers
5/891 part numbers
3/491 part numbers
7/890 part numbers
190 part numbers
Part number
What each code means
| Part | Meaning |
|---|---|
| Example | MS17984C410 — Corrosion-resistant steel pin, 1/4 shank diameter, grip 1.000 |
Notes from the standard
- Part number: basic MS number, C (corrosion-resistant steel pin), shank diameter in sixteenths of an inch and grip in tenths of an inch: MS17984C410 is the 1/4 pin with a 1.000 grip.
- Grip lengths from the first listed to 9.900 in steps of .100 for every diameter.
- Grip +.020 −.000, measured to the edge of the locking element hole prior to staking.
- For cost purposes 1/4, 1/2 and 5/8 pins are preferred over 3/16, 7/16 and 9/16 pins respectively.
- Collar mandatory on pins with aluminum alloy handles, optional on pins with CRES handles.
- Alloy steel pins were eliminated: numbers of Revision E with a dash in place of C (alloy steel) are cancelled and superseded in Revision F by the same number with C (MS17984-410 is superseded by MS17984C410).
Where to buy
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Distributors coming soon.
Sources
- MS17984 Rev. F, 1 Jun 1994 — Pin, Quick Release, Self-Retaining, Positive Locking, Single Acting, Button Handle — dimensions, part numbers and notes. Public domain, distribution unlimited.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.
