• Available in six sizes from 1/2” to 1-1/2”, (13mm – 38mm).
  • Button Spelter terminations have a 100% efficiency rating, based on the catalog strength of the wire rope.
  • Designed for use with mobile cranes. Can be used to terminate high performance, rotation resistant ropes, and standard 6 strand ropes.
  • Easy to install assembly utilizes Crosby WIRELOCK® socketing compound.
  • Sockets and buttons are re-usable.
  • Replacement buttons and sockets are available.
  • Locking feature available to prevent rotation of rope.
  • Button contains cap with eye that can be attached to, and used to pull, rope during reeving process.
  • Manufactured to the requirements of API-2C.


SB-427 Button Spelter Socket

SB-427 Button Spelter Sockets
Wire Rope Size SB-427 Stock No. Ultimate Load
(t)		 Weight Each
(lb)		 Button Only Stock No. Dimensions
(in)		 Tolerance +/-
(in) (mm) A B C D E F J K L M C
1/2 – 5/8 13-16 1052005 27 6.1 1052309 7.94 3.23 1.28 1.19 1.22 0.57 1.50 3.50 0.25 2.93 0.06
5/8 – 3/4 16-19 1052014 45 10.3 1052318 9.44 3.88 1.53 1.38 1.44 0.66 1.75 4.28 0.38 3.43 0.06
3/4 – 7/8 19-22 1052023 57 17.1 1052327 10.81 4.41 1.78 1.62 1.69 0.75 2.06 4.78 0.38 3.96 0.06
7/8 – 1 22-26 1052032 82 29.2 1052336 12.88 5.48 2.03 2.00 2.00 0.89 2.44 5.62 0.62 4.52 0.09
1-1/8 – 1-1/4 28-32 1052041 136 46.0 1052345 14.90 5.68 2.53 2.25 2.50 1.11 2.94 7.08 0.75 5.72 0.09
1-3/8 – 1-1/2 35-38 1052050 161 78.0 1052354 18.06 7.17 3.03 2.75 2.75 1.24 3.62 8.08 0.75 6.76 0.09
SB-427TB (Bolt, Nut and Cotter Pin)
Wire Rope Size SB-427TB Stock No. Ultimate Load
(t)		 Weight Each
(lb)		 Button Only Stock No. Dimensions
(in)		 Tolerance +/-
(in) (mm) A B C D E F J K L M C
1/2 – 5/8 13-16 1052006 27 6.1 1052309 7.94 3.23 1.28 1.19 1.22 0.57 1.50 3.50 0.25 2.93 0.06
5/8 – 3/4 16-19 1052015 45 10.3 1052318 9.44 3.88 1.53 1.38 1.44 0.66 1.75 4.28 0.38 3.43 0.06
3/4 – 7/8 19-22 1052024 57 17.1 1052327 10.81 4.41 1.78 1.62 1.69 0.75 2.06 4.78 0.38 3.96 0.06
7/8 – 1 22-26 1052033 82 29.2 1052336 12.88 5.48 2.03 2.00 2.00 0.89 2.44 5.62 0.62 4.52 0.09
1-1/8 – 1-1/4 28-32 1052042 136 46.0 1052345 14.90 5.68 2.53 2.25 2.50 1.11 2.94 7.08 0.75 5.72 0.09
1-3/8 – 1-1/2 35-38 1052051 161 78.0 1052354 18.06 7.17 3.03 2.75 2.75 1.24 3.62 8.08 0.75 6.76 0.09