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Crosby® Wood Blocks for Manila Rope

Block Size (in.) Fitting Single Sheave Double Sheave Triple Sheave
21 B Galv 22 B Galv 23 B Galv.
CERTEX Cat. Ref. No. Crosby Stock No. CERTEX Cat. Ref. No. Crosby Stock No. CERTEX Cat. Ref. No Crosby Stock No.
3 HS CX13-0376 603813 CX13-0402 604616 CX13-0426 605410
4 HS CX13-0377 603831 CX13-0403 604634 CX13-0427 605438
5 HS CX13-0378 603859 CX13-0404 604652 CX13-0428 605456
6 HS CX13-0379 603877 CX13-0405 604670 CX13-0429 605474
8 HS CX13-0380 603911 CX13-0406 604714 CX13-0430 605517
3 N CX13-0381 606419 CX13-0407 606810 CX13-0431 607212
4 N CX13-0382 606437 CX13-0408 606838 CX13-0432 607230
5 N CX13-0383 606455 CX13-0409 606856 CX13-0433 607258
6 N CX13-0384 606473 CX13-0410 606874 CX13-0434 607276
8 N CX13-0385 606516 CX13-0411 606918 CX13-0435 607310
3 S CX13-0386 610011 CX13-0412 611617 CX13-0436 613214
4 S CX13-0387 610039 CX13-0413 611635 CX13-0437 613232
5 S CX13-0388 610057 CX13-0414 611653 CX13-0438 613250
6 S CX13-0389 610075 CX13-0415 611671 CX13-0439 613278
8 S CX13-0390 610119 CX13-0416 611715 CX13-0440 613312
Block Size (in.) Sheave Diameter
(in.)
Manila Rope Size (in.) Working Load Limit*
(lbs.)
Weight Each
(lbs.)
Outside Diam. Rim Thickness Center Pin Diam. 21 Single 22 Double 23 Triple 21 Single 22 Double 23 Triple
3 1.75 .50 .38 3J8 500 800 1200 1.00 1.75 2.50
4 2.25 .63 .38 112 1000 1400 1800 1.75 3.00 4.00
5 3.00 .75 .38 518 1200 1800 2400 3.25 5.60 6.50
6 3.50 1.00 .50 314 1800 2500 3200 5.00 8.50 11.50
8 4.75 1.13 .63 7/8-1 2800 3800 4800 9.00 14.00 21.50

*Ultimate Load is 4 times the Working Load Limit.
Note: We furnish beckets on all blocks.

WARNING: Prop 65: Products supplied by CERTEX USA may expose you to chemicals including Nickel, which is known to the State of California to cause cancer. For more information, visit to www.P65Warnings.ca.gov.

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