MS APPROVED PARTS
MS Part Number 
RBC Part Number 1
RBC Part Number 2
RBC Part Number 3 Status Description 
AS5927 ATF--T8     A Track Roller, Single Row, Corrosion Resistant
AS5928 ATL--T8     A Track Roller, Double Row, Corrosion Resistant
AS5929 (A)AHRSC     A Track Roller, Stud Type, Corrosion Resistant
M81820/1 NEEG-     A Spherical Bearing, Narrow Series, Grooved, Mil-B-81820 Liner
M81820/2 WEE-     A Spherical Bearing, Wide Series, Mil-B-81820 Liner
M81820/3 WEEG-     A Spherical Bearing, Wide Series, Grooved, Mil-B-81820 Liner
M81820/4 NEE-     A Spherical Bearing, Narrow Series, Mil-B-81820 Liner
M81934/1- A PBE- -A- 06-382 PBHP- -A- A Journal, Mil-B-81943 Liner, Fabroid, 2024-T851 Backing
M81934/1- C PBE- -C- 06-282 PBHP- -C- A Journal, Mil-B-81943 Liner, Fabroid, 17-4 PH Backing
M81934/2- A FBE- -A- 07-382 FBHP- -A- A Flanged Journal, Mil-B-81943 Liner, Fabroid, 2024-T851 Backing
M81934/2- C FBE- -C- 07-282 FBHP- -C- A Flanged Journal, Mil-B-81943 Liner, Fabroid, 17-4 Backing
M81935/1 MT 01-824   A Rod End, Male, Mil-B-81820 Liner, 4340 Cd plated body, 17-4 race, 440C ball
M81935/2 FT 02-824   A Rod End, Female, Mil-B-81820 Liner, 4340 Cd plated body, 17-4 race, 440C ball
M81935/4 MT- AN     A Rod End, Male, Narrow Series, Mil-B-81820 Liner
M81935/5 FT- AN     A Rod End, Female, Narrow Series, Mil-B-81820 Liner
M81935/6 MPH(E/T)     A Rod End, Male, Wide Series, AS81820 Liner, PH13-8Mo Ball and Hsg, 17-4 Outer Ring
M81935/7 FPH(E/T)     A Rod End, Female,Wide Series,AS81820 Liner, PH13-8Mo Ball and Hsg, 17-4 Outer Ring
M81935/8 MPH(E/T)-AN     A Rod End, Male, Narrow Series, AS81820 Liner, PH13-8Mo Ball and Hsg, 17-4 Outer Ring
M81935/9 FPH(E/T)-AN     A Rod End, Female, Narrow Series, AS81820 Liner, PH13-8Mo Ball and Hsg, 17-4 Outer Ring
Mil-B-81936/1 03-582     A Spherical Bearing, 17-4 PH Race, Beryllium Cu Ball, Grooved, Relubricatible
Mil-B-81936/1 R 03-592     A Spherical Bearing, 17-4 PH Race, Beryllium Cu Ball, Grooved
Mil-B-81936/2 03-580     A Spherical Bearing, 17-4 PH Race, Beryllium Cu Ball, Relubricatible
Mil-B-81936/2 R 03-590     A Spherical Bearing, 17-4 PH Race, Beryllium Cu Ball
MS14101 03-825 NEG-   A Spherical Bearing, Narrow Series, Grooved, Mil-B-81820 Liner
MS14102 03-824 WE-   A Spherical Bearing, Wide Series, Mil-B-81820 Liner
MS14103 03-826 WEG-   A Spherical Bearing, Wide Series, Grooved, Mil-B-81820 Liner
MS14104 03-823 NE-   A Spherical Bearing, Narrow Series, Mil-B-81820 Liner
MS14101A 03-825L     A Extended Life - Spherical Bearing, Narrow Series, Grooved, Mil-B-81820 Liner
MS14102A 03-824L     A Extended Life - Spherical Bearing, Wide Series, Mil-B-81820 Liner
MS14103A 03-826L     A Extended Life - Spherical Bearing, Wide Series, Grooved, Mil-B-81820 Liner
MS14104A 03-823L     A Extended Life - Spherical Bearing, Narrow Series, Mil-B-81820 Liner
MS14237       A Bushings, Metal
MS14238       A Bushings, Metal
MS17319       A Bushings, Metal
MS17796       A Bushings, Metal
MS20819       A Bushings, Metal
MS21150 REP S     A Rod End, Solid Shank, Ball Bearing
MS21151 REP M     A Rod End, External Thread, Ball Bearing
MS21152 REP H     A Rod End, Hollow Shank, Ball Bearing
MS21153 REP F     A Rod End, Internal Thread, Ball Bearing
MS21154B   03-529-   P Spherical Bearing, AL Bronze Cad Plated, Grooved
MS21154S   03-569-   P Spherical Bearing, 4340 Cad Plated, Grooved
MS21155B   03-520-   P Spherical Bearing, AL Bronze Cad Plated
MS21155S   03-560-   P Spherical Bearing, 4340 Cad Plated
MS21240   06-211-   A Journal, Mil-B-8943 Liner, Fabroid, 17-4 PH Backing
MS21240   06-311-   A Journal, Mil-B-8943 Liner, Fabroid, 7075-T6 Backing
MS21241   07-211-   A Flanged Journal, Mil-B-8943 Liner, Fabroid, 17-4 PH Backing
MS21241   07-311-   A Flanged Journal, Mil-B-8943 Liner, Fabroid, 7075-T6 Backing
MS21242S   01-740-   A Rod End, Male, Fabroid Liner, 4340 Cd plated body, 17-4 race, 440C ball
MS21243S   02-740-   A Rod End, Female, Fabroid Liner, 4340 Cd plated body, 17-4 race, 440C ball
MS21428 MB500DD     A Precision Series Single Row Ball Bearing
MS21432 HRS     A Track Roller, Stud Type
MS21438 ATF     A Track Roller, Single Row, Replaces NBF
MS21439 ATL     A Track Roller, Double Row, Replaces NBL
MS21443 P & PD     P Single & Double Row Ball Bearing, Pulley Series
MS21447 HRSC     A Track Roller, Stud Type, Crowned
MS21783       A Bushings, Metal
MS24397       A Bushings, Metal
MS24461 NBC     A Track Roller, Single Row, Thin Cross Section
MS24463 NBE     A Track Roller, Single Row, Self Aligning
MS24464 NBK     A Track Roller, Double Row, Self Aligning
MS24465 NBF     A Track Roller, Single Row, Replaced by ATF
MS24466 NBL     A Track Roller, Double Row, Replaced by ATL
MS27640 KP     A Single Row Ball Bearing, Heavy Duty
MS27640 R MKP     A Single Row Ball Bearing, Heavy Duty, Precision
MS27641 KP A     A Single Row Ball Bearing, Medium Duty
MS27641 R MKP A     A Single Row Ball Bearing, Medium Duty, Precision
MS27642 KP B     A Single Row Ball Bearing, Light Duty
MS27642-S MKP B     A Single Row Ball Bearing, Light Duty, Precision
MS27643 DSP     A Double Row Ball Bearing, Internal Self Aligning
MS27643 R MDSP     A Double Row Ball Bearing, Internal Self Aligning, Precision
MS27644 DP     A Double Row Ball Beairng, Radial Type & "-W" Wide
MS27645  KSP (A)     A Single Row Ball Bearing, Internal Self Aligning
MS27645 R MKSP (A)     A Single Row Ball Bearing, Internal Self Aligning, Precision
MS27646 B500DD     A Single Row Ball Bearing, Double sealed, Extra Light Duty
MS27647 & (-G) (G) DW (K)     A Double Row Ball Bearing, Extra Wide, & "G" relubricable
MS27647 R MDW (K)     A Double Row Ball Bearing, Extra Wide, Precision
MS27648 KP BS     A Single Row Ball Bearing, External Self Aligning, Extra Light Duty
MS27649 AW AK     A Single Row Ball Bearing, Stainless Steel
MS35689       A Bushings, Metal
MS35771       A Bushings, Metal
NAS42       A Industry Standard Spacer
NAS43       A Industry Standard Spacer
NAS47       A Industry Standard Spacer
NAS72       A Industry Standard Unlined Bushing
NAS73       A Industry Standard Unlined Bushing
NAS74       A Industry Standard Unlined Bushing
NAS75       A Industry Standard Unlined Bushing
NAS76       A Industry Standard Unlined Bushing
NAS77       A Industry Standard Unlined Bushing
NAS537       A Industry Standard Unlined Bushing
NAS538       A Industry Standard Unlined Bushing
NAS659 RA M     A Rod End, External Thread, Ball Bearing
NAS659 RR M     A Rod End, External Thread, Roller Bearing
NAS660 RA F     A Rod End, Hollow Shank, Ball Bearing
NAS660 RR F     A Rod End, Hollow Shank, Roller Bearing
NAS1056       A Industry Standard Bushing
NAS1057       A Industry Standard Bushing
Note: Status column legend: "A" = Approved and "P" = Pending. Please check with customer service for more up to date information.