Size 4 58mm blocks

A strong, lightweight range of blocks for use on dayboats and cruising yachts. Ideal for mainsheet, vang tackles, lead blocks or wherever a powerful and compact purchase tackle is required.

A comprehensive range of cam cleat, fiddle and fiddle & cam cleat versions are available.

Overview
Sheave size Single 58mm x 17mm (2 1 /4 x 5/8")

Fiddle 32/58mm x 17mm (1 1 /14 x 2 1/4" x 5/8")
Max rope diameter Max rope diameter 12mm ( 7 /16")
Break load SWL 630Kg (1385 lbs)
Break load Break load 1260Kg (2770 lbs)
Max rolling load Max rolling load (ball bearing blocks) 440kg 970 lbs)
   
All available with plain or ball bearing sheaves:

Plain bearing blocks
Barton plain bearing blocks have a precision moulded acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of loads.

Ball bearing blocks
With our unique super-low friction ball race systems, featuring acetal sheaves and delrin ball bearings, running on a large diameter centre boss. This allows us to fit more load-bearing balls, which ensure extremely low friction performance, even under high loads.

Important note - break loads
Where break and safe working loads are stated, it is assumed that all sheaves are evenly loaded as in a purchase tackle. Uneven loading, or loading of one sheave in a double or triple block, will severely affect strength quoted. If unsure, please seek further assistance.

Maximum rolling load on ball bearing blocks is the maximum free running load before ball bearings will distort.

Fixed Eye Clevis Pin
Fixed Eye
Reverse Shackle
Swivel
Becket
Variloc Multi Head
Snap Shackle
Fixed Eye Clevis Pin Fixed Eye Reverse Shackle Swivel Snap Shackle Variloc Multi Head Becket
A simple, low priced fixed eye block with removable clevis pin for attachment. Pin Ø 6mm. Width between straps 13mm. With plain attachment eye. Removable shackle that can be set in-line or at 90° to the sheave. Fully swivelling head with removable shackle. With a cast stainless steel swivelling snap shackle. Ideal for quick-release downhauls or vang tackles. Allows swivel to be locked at 30° positions in relation to sheave. Inverting the plastic locking piece converts the swivel mode. Supplied with screw pin strip shackle. All the appropriate 58mm blocks are available with or without becket.
  Plain sheave   ball-bearing sheave Length mm
Weight (g)
        plain ball
Single size 4 blocks Plain sleave   Ball-bearing sleave Length Weight (g)
Single - fixed eye clevis pin 04 090   14 090 120 166 161
Single - fixed eye clevis pin + becket 04 091   14 091 140 177 175
Single - fixed eye 04 110   14 110 114 156 150
Single - fixed eye + becket 04 111   14 111 135 170 166
Single - reverse shackle 04 120   14 120 130 172 167
Single - reverse shackle + becket 04 121   14 121 150 187 181
Single - swivel 04 130   14 130 138 187 181
Single - swivel + becket 04 131   14 131 157 199 198
Single - snap shackle 04 140   14 140 148 257 250
Single - snap shackle + becket 04 141   14 141 170 269 266
Single - upright 04 150   14 150 92 218 214
Single - upright with fairlead 04 151   14 151 105 234 231
Single - cheek block 04 160   14 160 107 178 174
Single - stand up 04 170   14 170 135 243 237
Single - stand up + becket 04 171   14 171 152 262 253
Single - variloc 04 180   14 180 131 189 181
Single - variloc + becket 04 181   14 181 150 203 200
Double size 4 blocks            
Double - fixed eye 04 210   14 210 115 270 261
Double - fixed eye + becket 04 211   14 211 135 286 277
Double - reverse shackle 04 220   14 220 130 275 263
Double - reverse shackle + becket 04 221   14 221 147 288 285
Double - swivel 04 230   14 230 138 291 283
Double - swivel + becket 04 231   14 231 162 305 296
Double - upright 04 250   14 250 92 321 314
Triple size 4 blocks            
Triple - reverse shackle 04 320   14 320 132 377 365
Triple - reverse shackle + becket 04 321   14 321 145 391 380
Triple - swivel 04 330   14 330 139 391 380
Triple - swivel + becket 04 331   14 331 155 406 396
Fiddle size 4 blocks            
Fiddle - fixed eye 04 410   14 410 160 225 211
Fiddle - fixed eye + becket 04 411   14 411 178 237 225
Fiddle - reverse shackle 04 420   14 420 175 239 228
Fiddle - reverse shackle + becket 04 421   14 421 195 253 239
Fiddle - swivel 04 430   14 430 185 254 244
Fiddle - swivel + becket 04 431   14 431 202 267 252
Fiddle - snap shackle 04 440   14 440 195 326 316
Fiddle - snap shackle + becket 04 441   14 441 215 339 322
Fiddle - variloc 04 480   14 480 177 259 243
Fiddle - variloc + becket 04 481   14 481 197 269 260
Fiddle - Triple 04 930   14 930 192 359 344
Cam cleat size 4 blocks            
Single - swivel + becket + cam 04 531   14 531 157 307 299
Single - snap shackle + becket + cam 04 541   14 541 167 389 381
Single - stand up + becket + cam 04 571   14 571 152 365 358
Fiddle - double swivel + becket + cam 04 630   14 630 150 532 503
Fiddle - swivel + becket + cam 04 631   14 631 198 372 358
Fiddle - snap shackle + becket + cam 04 641   14 641 214 447 432
Fiddle - variloc + becket + cam 04 681   14 681 195 375 361
Fiddle swivel + becket + plastic cam 04 731   14 731 206 378 364
Triple - swivel + becket + cam 04 931   14 931 150 597 586
Stanchion lead size 4 blocks            
Single - stanchion lead 04 190   14 190 140 197 190