MS17986 at a glance
Where to buyCurrent standard: NASM17986. MS17986 is now controlled by NASM17986 (MS17986G, Notice 1). The part numbers do not change: MS17986C303 is still the number on drawings, IPCs and bags, and it is the same part. Order it by that number; the current document is NASM17986.
Specification
| Item | Value |
|---|---|
| Current standard | NASM17986 (part numbers unchanged) |
| Type | Quick release pin, L handle |
| Material | Shank and spindle: corrosion-resistant steel 17-4PH (UNS S17400, AMS 5643) or PH15-7Mo (UNS S15700, AMS 5657), heat treated per MIL-H-6875 to condition H-900 (17-4PH) or CH-900 (PH15-7Mo), Rockwell C40 min; locking elements: CRES 440C (UNS S44004, AMS 5630 or AMS 5880); handle and button: CRES 303 (ASTM A484, A581 or A582) or aluminum alloy 380 (QQ-A-591), 2011 (QQ-A-225/3), 2017 (QQ-A-225/5), 2024 (QQ-A-225/6) or 6061-T6 (QQ-A-200/8 or QQ-A-225/8); collar: CRES 301, 302, 303 or 304; spring: CRES 17-7PH (AMS 5678) or CRES 302 Class 1 (ASTM A313); attaching link or ring: CRES 17-7PH, spring temper (AMS 5678), or CRES 302 (ASTM A313) |
| 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 Cancelled by Notice 1 (Nov 1998) and superseded by NASM17986; the notice states the part numbers are identical.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 | .3110 | .3735 | .4360 | .4985 | .5610 | .6235 | .7485 | .8735 | .9985 |
| A min — A dia, min | .1870 | .2470 | .3095 | .3720 | .4345 | .4970 | .5595 | .6220 | .7470 | .8720 | .9970 |
| B — B, ±.005 | .220 | .289 | .375 | .440 | .509 | .594 | .666 | .750 | .887 | 1.045 | 1.219 |
| C — C, +.000 −.040 | .260 | .290 | .330 | .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 | .250 | .250 | .300 | .300 | .435 | .435 | .450 | .570 | .700 | .750 |
| E max — E dia, max | .500 | .500 | .500 | .625 | .625 | .800 | .800 | .975 | 1.000 | 1.320 | 1.320 |
| E min — E dia, min | .380 | .380 | .380 | .510 | .510 | .630 | .630 | .810 | .810 | 1.120 | 1.180 |
| F max — F, max | 1.800 | 1.800 | 1.800 | 2.030 | 2.030 | 2.360 | 2.360 | 3.070 | 3.070 | 3.700 | 3.700 |
| F min — F, min | 1.720 | 1.720 | 1.720 | 1.945 | 1.945 | 2.230 | 2.230 | 2.385 | 2.465 | 2.750 | 2.750 |
| G — G, max | 1.270 | 1.270 | 1.270 | 1.450 | 1.470 | 1.600 | 1.600 | 1.700 | 1.720 | 2.170 | 2.170 |
| H — H, min | .760 | .760 | .760 | .850 | .850 | .850 | .850 | .905 | .980 | 1.200 | 1.200 |
| K — K, max | .340 | .340 | .340 | .390 | .390 | .500 | .500 | .600 | .600 | .800 | .800 |
| Double shear, min, lb | 5150 | 9200 | 14400 | 20600 | 28000 | 36800 | 46000 | 57500 | 82500 | 112500 | 147000 |
| Tensile strength, min, lb | 200 | 230 | 510 | 575 | 710 | 1160 | 1420 | 2070 | 2950 | 3900 | 5480 |
| 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 | .5525 | .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
3/895 part numbers
7/1695 part numbers
1/293 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 | MS17986C410 — 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: MS17986C410 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 F with a dash in place of C (alloy steel) are cancelled and superseded in Revision G by the same number with C (MS17986-410 is superseded by MS17986C410).
Where to buy
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Distributors coming soon.
Sources
- MS17986 Rev. G, 1 Jun 1994 — Pin, Quick Release, Self-Retaining, Positive Locking, Single Acting, "L" 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.
