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  • Body - 4340 alloy steel per AMS 6415, heat treated, cadmium plated.
  • Ball - 440C stainless steel per AMS 5630, heat treated.
  • 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.
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Item #

Thread Type

B - Ball Bore

W - Ball Width

A - Base to Center

D - Head Diameter

Thread Size

Ultimate Radial Static Load Capacity

ATM-3T N/A Right Hand N/A .1900 in N/A .281 in N/A 1.315 in N/A .680 in N/A 1/4-28 N/A 3,000 lb
ATB-3T N/A Left Hand N/A .1900 in N/A .281 in N/A 1.315 in N/A .680 in N/A 1/4-28 N/A 3,000 lb
ATMK-3T N/A Right Hand N/A .1900 in N/A .281 in N/A 1.315 in N/A .680 in N/A 1/4-28 N/A 3,000 lb
ATBK-3T N/A Left Hand N/A .1900 in N/A .281 in N/A 1.315 in N/A .680 in N/A 1/4-28 N/A 3,000 lb
ATMK-3TB N/A Right Hand N/A .1900 in N/A .281 in N/A 1.315 in N/A .680 in N/A 1/4-28 N/A 3,000 lb
ATBK-3TB N/A Left Hand N/A .1900 in N/A .281 in N/A 1.315 in N/A .680 in N/A 1/4-28 N/A 3,000 lb
ATM-4T N/A Right Hand N/A .2500 in N/A .343 in N/A 1.443 in N/A .827 in N/A 1/4-28 N/A 5,300 lb
ATB-4T N/A Left Hand N/A .2500 in N/A .343 in N/A 1.443 in N/A .827 in N/A 1/4-28 N/A 5,300 lb
ATMK-4T N/A Right Hand N/A .2500 in N/A .343 in N/A 1.443 in N/A .827 in N/A 1/4-28 N/A 5,300 lb
ATBK-4T N/A Left Hand N/A .2500 in N/A .343 in N/A 1.443 in N/A .827 in N/A 1/4-28 N/A 5,300 lb
ATM-5T N/A Right Hand N/A .3125 in N/A .375 in N/A 1.948 in N/A .984 in N/A 5/16-24 N/A 8,600 lb
ATB-5T N/A Left Hand N/A .3125 in N/A .375 in N/A 1.948 in N/A .984 in N/A 5/16-24 N/A 8,600 lb
ATMK-5T N/A Right Hand N/A .3125 in N/A .375 in N/A 1.948 in N/A .984 in N/A 5/16-24 N/A 8,600 lb
ATBK-5T N/A Left Hand N/A .3125 in N/A .375 in N/A 1.948 in N/A .984 in N/A 5/16-24 N/A 8,600 lb
ATM-6T N/A Right Hand N/A .3750 in N/A .406 in N/A 2.030 in N/A 1.131 in N/A 3/8-24 N/A 13,000 lb
ATB-6T N/A Left Hand N/A .3750 in N/A .406 in N/A 2.030 in N/A 1.131 in N/A 3/8-24 N/A 13,000 lb
ATMK-6T N/A Right Hand N/A .3750 in N/A .406 in N/A 2.030 in N/A 1.131 in N/A 3/8-24 N/A 13,000 lb
ATBK-6T N/A Left Hand N/A .3750 in N/A .406 in N/A 2.030 in N/A 1.131 in N/A 3/8-24 N/A 13,000 lb
ATM-7T N/A Right Hand N/A .4375 in N/A .437 in N/A 2.250 in N/A 1.294 in N/A 7/16-20 N/A 17,800 lb
ATB-7T N/A Left Hand N/A .4375 in N/A .437 in N/A 2.250 in N/A 1.294 in N/A 7/16-20 N/A 17,800 lb
ATMK-7T N/A Right Hand N/A .4375 in N/A .437 in N/A 2.250 in N/A 1.294 in N/A 7/16-20 N/A 17,800 lb
ATBK-7T N/A Left Hand N/A .4375 in N/A .437 in N/A 2.250 in N/A 1.294 in N/A 7/16-20 N/A 17,800 lb
ATM-8T N/A Right Hand N/A .5000 in N/A .500 in N/A 2.544 in N/A 1.459 in N/A 1/2-20 N/A 24,200 lb
ATB-8T N/A Left Hand N/A .5000 in N/A .500 in N/A 2.544 in N/A 1.459 in N/A 1/2-20 N/A 24,200 lb
ATMK-8T N/A Right Hand N/A .5000 in N/A .500 in N/A 2.544 in N/A 1.459 in N/A 1/2-20 N/A 24,200 lb
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