AN486, MS27975 Threaded clevis end
Used to terminate ends of control linkages, requires use of a pin, checknut, and cotter pin.
Available in size 1/4x28 threaded shank, left ‘L’ at end or right hand threads ‘R’ at end.
Current spec: AN486 spec was cancelled in 1968, NASM27975 (uses MS27975 part number)
Common sizes:
Dash No. |
Type of fork |
Rated Strength (lb) |
Tapped Threads |
Pin Diameter |
Length from end to pin center |
Slot width |
Slot length inside radius end to pin center |
1 |
Wide |
3800 |
¼-28 |
.250 |
1.00 |
.266 |
1.00 |
2 |
Narrow |
2850 |
¼-28 |
.250 |
1.00 |
.141 |
1.00 |
3 |
Wide |
4700 |
¼-28 |
.190 |
1.00 |
.266 |
1.00 |
4 |
Narrow |
3500 |
¼-28 |
.190 |
1.00 |
.141 |
1.00 |
Example: MS27975-3R is a ¼-28 right hand thread end with a 3/16” pin.
AN665 Threaded clevis end
Used to terminate ends of control linkages, requires use of a pin, checknut, and cotter pin.
Available in sizes from 6-40 to 1” threaded shanks, left ‘L’ at end or right hand threads ‘R’ at end.
Current spec: AN665 spec was cancelled in 1998, no known exact replacement. AN486 similar though.
Common sizes:
Dash No. |
Rated Strength (lb) |
Tapped Threads |
Pin Diameter |
Length from end to pin center |
Slot width |
Slot length inside radius end to pin center |
21L 21R |
2400 |
10-32 |
.190 |
1.531 |
.150 |
.469 |
34L 34R |
4200 |
¼-28 |
.250 |
1.813 |
.203 |
.625 |
61L 61R |
6900 |
5/16-24 |
.313 |
2.000 |
.203 |
.844 |
80L 80R |
10000 |
3/8-24 |
.375 |
2.250 |
.266 |
.875 |
Example: AN665-21R is a 10-32 right hand thread end with a 3/16” pin.
AN392-AN404, MS20392 Straight pin for clevis ends
Pin for use in Clevis ends, requires cotter pin.
Available in sizes from 1/8 to 1” diameters, Lengths up to 4.25”
AN392 is an 1/8” dia. steel pin and AN404 is a 7/8” dia. Steel pin
Material codes are for MS20392 part number only
Material code: ‘C’ – Steel Alloy 4130
‘S’ - Steel Alloy 8740
‘R’ – Stainless PH13-8Mo Chrome Plated
‘P’ – Stainless PH13-8Mo Cleaned, Descaled, and Passivated
‘A’ – Titanium Alloy Ti-64Al-4V aluminum coated
‘T’ – Titanium Alloy Ti-64Al-4V No Finish
Effective length, is the length of the shank from the head to the inside of the cotter pin hole
Current spec: AN392-AN404 specs were cancelled in 1957, NASM20392 (uses MS20392 for part number)
Common sizes:
? IN NEW PART NUMBER IS REPLACED BY THE MATERIAL CODE ABOVE |
||||||||
Effective Length |
3/16” dia. Pin Use MS24665-132 cotter pin |
1/4” dia. Pin Use MS24665-132 cotter pin |
5/16” dia. Pin Use MS24665-283 cotter pin |
3/8” dia. Pin Use MS24665-283 cotter pin |
||||
Old AN393 |
New MS20392 |
Old AN394 |
New MS20392 |
Old AN395 |
New MS20392 |
Old AN396 |
New MS20392 |
|
.219 |
-7 |
-2?7 |
-7 |
-3?7 |
-7 |
-4?7 |
-7 |
-5?7 |
.281 |
-9 |
-2?9 |
-9 |
-3?9 |
-9 |
-4?9 |
-9 |
-5?9 |
.344 |
-11 |
-2?11 |
-11 |
-3?11 |
-11 |
-4?11 |
-11 |
-5?11 |
.406 |
-13 |
-2?13 |
-13 |
-3?13 |
-13 |
-4?13 |
-13 |
-5?13 |
.469 |
-15 |
-2?15 |
-15 |
-3?15 |
-15 |
-4?15 |
-15 |
-5?15 |
.531 |
-17 |
-2?17 |
-17 |
-3?17 |
-17 |
-4?17 |
-17 |
-5?17 |
.594 |
-19 |
-2?19 |
-19 |
-3?19 |
-19 |
-4?19 |
-19 |
-5?19 |
.656 |
-21 |
-2?21 |
-21 |
-3?21 |
-21 |
-4?21 |
-21 |
-5?21 |
.719 |
-23 |
-2?23 |
-23 |
-3?23 |
-23 |
-4?23 |
-23 |
-5?23 |
.781 |
-25 |
-2?25 |
-25 |
-3?25 |
-25 |
-4?25 |
-25 |
-5?25 |
.844 |
-27 |
-2?27 |
-27 |
-3?27 |
-27 |
-4?27 |
-27 |
-5?27 |
.906 |
-29 |
-2?29 |
-29 |
-3?29 |
-29 |
-4?29 |
-29 |
-5?29 |
.969 |
-31 |
-2?31 |
-31 |
-3?31 |
-31 |
-4?31 |
-31 |
-5?31 |
1.031 |
-33 |
-2?33 |
-33 |
-3?33 |
-33 |
-4?33 |
-33 |
-5?33 |
Example: AN393-17 is a 3/16 steel pin effective length of .531” same as MS20392-2C17.
