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274
Series 60
B
LO
CKS
™
SHEAVE
DIAM.
MAX.
ROPE
MAX.
WIRE
PIN
DIAM. M.W.L. B.L. WEIGHT
SHEAVE
DIAM.
MAX.
ROPE
MAX.
WIRE
PIN
DIAM. M.W.L. B.L. WEIGHT
PRODUCT No.
DESCRIPTION
mm mm mm mm kg kg
g
in.
in.
in.
in.
lb lb
oz
Core Blocks™
RF64108A
Mast base block, clevis pin head
60 12 -
8 1000*
1
2000*
1
182
2 3/8
1/2 -
5/16 2200*
1
4410*
1
6.4
RF64500
Single block, fiddle
60+30 12
-
- 1000 2000 355
2 3/8+ 1 3/16 1/2 -
2200 4410 12.5
RF64503
Single block, fiddle, snap shackle
60+30 12 -
- 1000 2000 405
2 3/8+ 1 3/16 1/2 -
2200 4410 14.2
RF64520
Single block, fiddle, cleat
60+30 12
-
-
250 500 490
2 3/8+ 1 3/16 1/2 -
550 1100 17.3
RF64523
Single block, fiddle, cleat, snap shackle
60+30 12
-
-
250 500 540
2 3/8+ 1 3/16 1/2 -
550 1100 19.0
RF64151
Foot block, single
60 12 -
-
1000 2000 180
2 3/8
1/2 -
-
2200 4410 6.4
RF64251
Foot block, double
60 12 -
-
1000*
2
2000*
2
370
2 3/8
1/2 -
-
2200*
2
4410*
2
13.1
*1 Full block rated load can only be achieved with uniformly distributed load across full length of clevis pin. ie. 14mm (9/16”) diameter mast collar post or 14mm (9/16”) wide mast collar plate/tang.
*2 Total block load. Maximum load on top sheave not to exceed 50% of total block load.
RF64520 & RF64523 cleating angle is adjustable and are fitted with a high
performance C-cleat and fairlead for secure and easy cleating.
Fiddle blocks incorporate an integrated becket through the hub of the lower
sheave, and are ideal for creating simple vang and mainsheet systems up to
4:1 on boats to 12m (40ft).
RF64503 & RF64523 features a versatile trunnion snap shackle that provides
quick & simple attachment and removal, and has 360° rotation with side-to-
side ar ticulation.
RF64108A mast base block has a removable clevis pin for attaching to suit a
14mm (9/16”) wide mast collar post.
*
Universal head can be fixed at 0° or 90° or left free to swivel, by using a
2.5mm Hex/Allen Key.
Sheave: U.V. stabilised Acetal or anodised aluminium (AW models).
Cheek plates: Aluminium alloy.
Ball Bearings: High compression strength carbon black Acetal.
Shackle, post & hub: Grade 316 stainless steel.
Pins: Grade 2205 stainless steel (RF64108, RF64108A, RF64202).
Snap shackle: 15-5PH investment cast stainless steel.
Cleat: Fibre reinforced composite.
F6R 4108A
8mm 2 x
(5/16”)
RF64251
20mm
25/32”
20mm
25/32”
NEW
NEW
NEW
NEW
NEW
NEW
F6R 4503
RF64520
RF64523
50 RF64 0
RF617A
6mm (1/4”) pin
RF6261
Snap shackle service kit
RF64151
RF64108A suits 14mm (9/16”)
mast collar post (not supplied)
14mm
(9/16”)
