The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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Effective August 21st, 2023, the Naval Air Warfare Center Aircraft Division (NAWCAD) has disapproved Timken Aurora’s qualification status for SAE-AS81820 and SAE-AS81935 specifications. Timken Aurora is working diligently to get requalified.

  • Body - 4340 alloy steel per AMS 6415 - heat treated, cadmium plated.
  • Ball - 440C stainless steel per AMS 5630 - heat treated.
  • Optional Ball - 13-8 Mo stainless steel per AMS 5629 - heat treated. (Specify by adding suffix "C" ex.: ATM-3TC)
  • Race - 17-4 PH stainless steel per AMS 5643 - heat treated.
  • PTFE Liner - (AT 3200) Permanently bonded to race inside diameter, qualified to SAE-AS81820 Type A.
  • Temperature range: -65°F to +325°F
  • No load rotational breakaway torque can be varied to meet specific application requirements.
  • Keyways are available. Units are supplied without keyways. When a keyway is required, specify by adding suffix "K". Ex.: ATMK-3T.
  • As applicable, keyways will conform to SAE-AS81935/3 or NAS 559.
  • All threads are rolled after heat treatment, and conform to UNJF-3A per AS8879.
  • Rod End Bearings listed are manufactured to conform to the dimensions, materials, and configurations of SAE-AS81935/4, and are approved for procurement under this specification.
ASM-T & ASB-T Image
Unit of Measure
1 2 3 4 

Part Number

Thread Type

B - Ball Bore

W - Ball Width

H - Head Width

A - Base to Center

D - Head Diameter

C - Thread Length

Thread Size

Ultimate Radial Static Load Capacity

CAD

ATBK-8T N/A Left Hand N/A .5000 in N/A .500 in N/A .400 in N/A 2.544 in N/A 1.459 in N/A 1.468 in N/A 1/2-20 N/A 24,200 lb N/A CAD
ATBK-8TC N/A Left Hand N/A .5000 in N/A .500 in N/A .400 in N/A 2.544 in N/A 1.459 in N/A 1.468 in N/A 1/2-20 N/A 24,200 lb N/A CAD
ATM-10T N/A Right Hand N/A .6250 in N/A .625 in N/A .510 in N/A 2.832 in N/A 1.763 in N/A 1.562 in N/A 5/8-18 N/A 38,500 lb N/A CAD
ATM-10TC N/A Right Hand N/A .6250 in N/A .625 in N/A .510 in N/A 2.832 in N/A 1.763 in N/A 1.562 in N/A 5/8-18 N/A 38,500 lb N/A CAD
ATB-10T N/A Left Hand N/A .6250 in N/A .625 in N/A .510 in N/A 2.832 in N/A 1.763 in N/A 1.562 in N/A 5/8-18 N/A 38,500 lb N/A CAD
ATB-10TC N/A Left Hand N/A .6250 in N/A .625 in N/A .510 in N/A 2.832 in N/A 1.763 in N/A 1.562 in N/A 5/8-18 N/A 38,500 lb N/A CAD
ATMK-10T N/A Right Hand N/A .6250 in N/A .625 in N/A .510 in N/A 2.832 in N/A 1.763 in N/A 1.562 in N/A 5/8-18 N/A 38,500 lb N/A CAD
ATMK-10TC N/A Right Hand N/A .6250 in N/A .625 in N/A .510 in N/A 2.832 in N/A 1.763 in N/A 1.562 in N/A 5/8-18 N/A 38,500 lb N/A CAD
ATBK-10T N/A Left Hand N/A .6250 in N/A .625 in N/A .510 in N/A 2.832 in N/A 1.763 in N/A 1.562 in N/A 5/8-18 N/A 38,500 lb N/A CAD
ATBK-10TC N/A Left Hand N/A .6250 in N/A .625 in N/A .510 in N/A 2.832 in N/A 1.763 in N/A 1.562 in N/A 5/8-18 N/A 38,500 lb N/A CAD
ATM-12T N/A Right Hand N/A .7500 in N/A .750 in N/A .603 in N/A 3.193 in N/A 2.140 in N/A 1.687 in N/A 3/4-16 N/A 56,600 lb N/A CAD
ATM-12TC N/A Right Hand N/A .7500 in N/A .750 in N/A .603 in N/A 3.193 in N/A 2.140 in N/A 1.687 in N/A 3/4-16 N/A 56,600 lb N/A CAD
ATB-12T N/A Left Hand N/A .7500 in N/A .750 in N/A .603 in N/A 3.193 in N/A 2.140 in N/A 1.687 in N/A 3/4-16 N/A 56,600 lb N/A CAD
ATB-12TC N/A Left Hand N/A .7500 in N/A .750 in N/A .603 in N/A 3.193 in N/A 2.140 in N/A 1.687 in N/A 3/4-16 N/A 56,600 lb N/A CAD
ATMK-12T N/A Right Hand N/A .7500 in N/A .750 in N/A .603 in N/A 3.193 in N/A 2.140 in N/A 1.687 in N/A 3/4-16 N/A 56,600 lb N/A CAD
ATMK-12TC N/A Right Hand N/A .7500 in N/A .750 in N/A .603 in N/A 3.193 in N/A 2.140 in N/A 1.687 in N/A 3/4-16 N/A 56,600 lb N/A CAD
ATBK-12T N/A Left Hand N/A .7500 in N/A .750 in N/A .603 in N/A 3.193 in N/A 2.140 in N/A 1.687 in N/A 3/4-16 N/A 56,600 lb N/A CAD
ATBK-12TC N/A Left Hand N/A .7500 in N/A .750 in N/A .603 in N/A 3.193 in N/A 2.140 in N/A 1.687 in N/A 3/4-16 N/A 56,600 lb N/A CAD
ATM-14T N/A Right Hand N/A .8750 in N/A .875 in N/A .713 in N/A 3.677 in N/A 2.372 in N/A 2.000 in N/A 7/8-14 N/A 77,400 lb N/A CAD
ATM-14TC N/A Right Hand N/A .8750 in N/A .875 in N/A .713 in N/A 3.677 in N/A 2.372 in N/A 2.000 in N/A 7/8-14 N/A 77,400 lb N/A CAD
ATB-14T N/A Left Hand N/A .8750 in N/A .875 in N/A .713 in N/A 3.677 in N/A 2.372 in N/A 2.000 in N/A 7/8-14 N/A 77,400 lb N/A CAD
ATB-14TC N/A Left Hand N/A .8750 in N/A .875 in N/A .713 in N/A 3.677 in N/A 2.372 in N/A 2.000 in N/A 7/8-14 N/A 77,400 lb N/A CAD
ATMK-14T N/A Right Hand N/A .8750 in N/A .875 in N/A .713 in N/A 3.677 in N/A 2.372 in N/A 2.000 in N/A 7/8-14 N/A 77,400 lb N/A CAD
ATMK-14TC N/A Right Hand N/A .8750 in N/A .875 in N/A .713 in N/A 3.677 in N/A 2.372 in N/A 2.000 in N/A 7/8-14 N/A 77,400 lb N/A CAD
ATBK-14T N/A Left Hand N/A .8750 in N/A .875 in N/A .713 in N/A 3.677 in N/A 2.372 in N/A 2.000 in N/A 7/8-14 N/A 77,400 lb N/A CAD
Unit of Measure
1 2 3 4