Crosby McKissick 12 Ton #408 Bronze Bushing Double Snatch Block w/ Hook (8" Sheave, 5/8"-3/4" Wire Rope)

Name: Crosby McKissick 12 Ton #408 Bronze Bushing Double Snatch Block w/ Hook (8" Sheave, 5/8"-3/4" Wire Rope)
Brand: Crosby
SKU: C104185
Price: 2145.00 USD
Availability: InStock

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SKU:C104185

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Description
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Description

CROSBY McKISSICK

408 Double-Sheave Snatch Block

12 metric-tonne WLL • 8-inch sheave • Bronze bushing

Built for wire-rope rigging

A double-sheave wire-rope block for properly designed, four-part-line rigging systems. The opening design provides access to both sheaves by removing one bolt, and an S-4320 hook latch is included.

Specifications

Specification	104185
Manufacturer stock number	104185
Model	408
Working Load Limit (WLL)	12 metric tonnes
Sheave configuration	Double sheave
Nominal sheave diameter	8 in.
Wire rope diameter	5/8–3/4 in.
Bearing	Bronze bushing (BB)
End fitting	Hook with latch
Approximate product weight	53 lb
Design factor	4:1

WLL is shown in metric tonnes. BB identifies the bronze-bushed version of this model.

Key features

Opening construction simplifies wire-rope installation.
Hook latch supplied installed.
Center-pin pressure lubrication fitting supports maintenance.

Dimensions

All values below are inches. Use the lettered drawing below; the full source is the Crosby catalog PDF.

Crosby McKissick dimension drawings: use the left-hand 408 hook block views for table references A through I; the right-hand 409 shackle block is not this product. — Manufacturer drawing: use the **left-hand 408 hook block** views and references A–I. The right-hand 409 shackle block is not this product. Click the drawing to enlarge.

Drawing reference	Dimension (in.)
A	23.18
B	8.12
C	6.13
D	7.86
E	1.56
F	16.50
G	1.44
H	2.62
I	2.03

Selection & safe use

Block WLL limits the total force on the block and its attachment, which depends on line tension and rigging geometry. It is not a direct winch line-pull rating. Crosby specifies four parts of line for this double-sheave model.

These specifications cover wire rope. Do not assume compatibility with AmSteel-Blue or other synthetic ropes. Verify the rope, sheave, attachment and complete rigging arrangement for the application, and follow Crosby's inspection and operating instructions.

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