151 SERIES
THREADED INSERT, BLIND, SNAP-IN HEAD STYLE
HEAVY DUTY, "HIGH PERFORMANCE"

TABLE I
CODE
NO.		 T
THREAD		 A DIA
±.010		 B SELF-LK
±.06		 C DIA
±.010		 INSTALL
HOLE
+.010/-.000
632 6-32 UNC .500 .12 .427 .468
832 8-32 UNC .500 .12 .427 .468
1032 10-32 UNF .531 .12 .458 .500
420 1/4-20 UNC .594 .16 .521 .562
428 1/4-28 UNF .594 .16 .521 .562
518 5/16-18 UNC .656 .20 .583 .625
524 5/16-24 UNF .656 .20 .583 .625
616 3/8-16 UNC .719 .20 .646 .687
624 3/8-24 UNF .719 .20 .646 .687
714 7/16-14 UNC .781 .20 .708 .750
720 7/16-20 UNF .781 .20 .708 .750
813 1/2-13 UNC .844 .20 .771 .812
820 1/2-20 UNF .844 .20 .771 .812
 
TABLE II
DASH
NO.		 L ±.03
LENGTH
MINIMUM FULL THREAD DEPTH
#6 #8 #10 1/4 5/16 3/8 7/16 1/2
-5 .312 .162 .162 --    --    --    --    --    --   
-6 .375 .225 .225 .175 --    --    --    --    --   
-7 .437 .276 .287 .237 --    --    --    --    --   
-8 .500 .276 .328 .300 .225 --    --    --    --   
-10 .625 .276 .328 .375 .350 .350 .350 --    --   
-12 .750 .276 .328 .375 .475 .475 .475 .400 .400
-14 .875 .276 .328 .375 .500 .600 .600 .525 .525
-16 1.000 .276 .328 .375 .500 .625 .725 .650 .650
-18 1.125 .276 .328 .375 .500 .625 .750 .775 .775
-20 1.250 .276 .328 .375 .500 .625 .750 .874 .900
-22 1.375 .276 .328 .375 .500 .625 .750 .874 1.000
-24 1.500 .276 .328 .375 .500 .625 .750 .874 1.000
 
TABLE III
DASH
NO.		 SKIN THICKNESS INSTALL SIDE
-1 .010-.019
-2 .020-.029
-3 .030-.039
-4 .040-.049
-5 .050-.059
-6 .060-.069
-7 .070-.079
-8 .080-.089
-9 .090-.099
 
  • Notes:
    1. Threads per MIL-S-7742
    2. Patent No. 4,941,785 and 5,082,405
    3. Number of Spiral Ribs varies with length

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Last Revised: 08/26/2010