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SPG & SRG Ball Joints

1/2-20

Left-hand thread available in all sizes. (Add suffix "LH" to part number.)  
  • Series SPG & SRG Ball Joints
  • Parts are designed & manufactured to SAE J490, Type G, and either Style 2 or Style 4 specifications.
  • Ball studs are made from 1045 steel, surface hardened.
  • Bodies are made from 1045 steel, surface hardened.
  • SPG & SRG are .0003 minimum zinc plated & dichromate treated for corrosion resistance. 
  • Ball sockets are packed with lubricant.
  • Metrics are available upon request. 

 


SERIES SPG BALL JOINTS are swaged metal designs with a 1045 steel carbon body and ball stud both surfaces hardened for good pull out characteristics and wear resistance. The Type SPG is provided with a weather resistant rubber dirt shield for protection against contaminants. 

AETNA PART NO.A
Thread Size
BCDEFGHJKLTensile and Shear Strength (Pounds)Force to Remove Ball Stud (Pounds)
SPG1000 10-32 7/16 7/16 1/8 3/8 5/16 7/8 7/16 1-1/16 .172 .299 295 690
SPG1002 1/4-28 15/32 9/16 1/8 7/16 3/8 31/32 1/2 1-7/32 .193 .345 882 1050
SPG1003 5/16-24 17/32 11/16 5/32 1/2 7/16 1-1/8 9/16 1-13/32 .232 .403 1587 1282
SPG1004 3/8-24 11/16 7/8 3/16 5/8 1/2 1-3/8 3/4 1-11/16 .287 .49 2437 1700
SPG1005 7/16-20 7/8 1-1/8 1/4 3/4 5/8 1-15/16 1-1/8 2-3/8 .412 .615 3390 2700
SPG1006 1/2-20 7/8 1-1/8 1/4 3/4 5/8 1-15/16 1-1/8 2-3/8 .412 .615 3390 2700

SERIES SRG BALL JOINTS are similar to our SPG SERIES in that it features a swaged metal design with a 1045 carbon body and ball stud both surfaces hardened and incorporates a retaining ring feature holding the ball stud for excellent pull-out characteristics and wear resistance (substantially higher than our SPG series units). The SRG series is provided with a weather resistant dirt shield for protection against contaminants. The retaining ring is made from galvanized wire, stress relieved.

AETNA PART NO.A
Thread Size
BCDEFGHJKLTensile and Shear Strength (Pounds)Force to Remove Ball Stud (Pounds)
SRG103 10-32 15/32 7/16 1/8 7/16 3/8 31/32 15/32 1-7/32 .217 .289 420 1400
SRG107 1/4-28 15/32 9/16 1/8 7/16 3/8 31/32 17/32 1-7/32 .217 .31 882 1400
SRG108 5/16-24 17/32 11/16 5/32 1/2 7/16 1-1/8 9/16 1-13/32 .232 .355 1375 1575
SRG109 3/8-24 11/16 7/8 3/16 5/8 1/2 1-3/8 3/4 1-11/16 .284 .433 1675 2000
SRG111 1/2-20 7/8 1-1/8 1/4 3/4 5/8 1-15/16 1-1/8 2-3/8 .382 .558 2637 2855
SRG112 5/8-20 1 1-1/8 5/16 7/8 3/4 2-1/16 1-1/8 2-37/64 .417 .558 2920 3135

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