Standardized Type AA Threaded Inserts Closed End


Item # 256AA-13SS


  • Class II threads meet A.S.M.E. (U.S.) specifications
  • Offered in a wide variety of lengths
  • Close tolerance of ID after tapping insures perfect fit on locating pins
  • Smooth ring on OD eliminates knurl teeth on surface of molded part
  • Holes tapped to maximum depth


TYPE AA Molded-In Inserts feature a new design for molded-in use. Close tolerance of minor thread diameter and careful burnishing of inner thread crests assure snug fit on locating pins. Smooth ring on open end of insert eliminates knurl teeth showing on surface of molded part.


Thread Type


U.S. Thread Size (A)

Outside Diameter (B)

Outside Diameter Reference (B)

Length (C)

Length Tolerance (C)

U.S. I.D. (Check with our engineering department for tolerances after tapping) (D)

U.S. Minimum Number of Full Threads (E)

Shoulder O.D. (F)

Base Materials

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Installation Methods


Safety Notes

WARNING: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. Do not use in connection with drinking water. Wash hands after handling.

WARNING: Cancer and Reproductive Harm -