Forged Carbon Steel
Forged Alloy Steel
*Quenched & Tempered.
Special specification and marks can be made according to customers
- Packing: Packed in cartons with plastic bags inside on iron pallets
- full tracebility
Inspection Before Use
The pre-use check for hooks should cover the following:
1. The safety catch should be in place and functioning correctly.
2. The hook should be checked for any distortion, cracking and excessive wear or corrosion.
NOTE: The wear on the bearing surface of the hook should not exceed 8% of the nominal dimension.
3. Check that the opening of the hook is within the manufacturers parameters. If the hook is opened excessively it is a sign that it has been point loaded or overloaded.
4. Moving parts such as release cams should be checked for free movement.
5. If the hook is a ball bearing swivel hook check that the hook is swivelling freely and that the bearing is not making any unusual noises. Unusual noises are often a sign of bearing fatigue or bearing failure.
6. If the hook has a threaded machined shank ensure that the thread is in good order and that the nut is turning freely on the thread
Size |
Working Load Limit (Lbs) |
DIMENSIONS (in) |
| Chain |
H-331 |
A-331 |
B |
E |
P |
R |
T |
| 1/4" |
1,950 |
2,750 |
0.44 |
0.79 |
0.38 |
2.56 |
0.79 |
| 5/16" |
2,875 |
4,300 |
0.5 |
0.93 |
0.44 |
2.87 |
0.79 |
| 3/8" |
4,000 |
5,250 |
0.59 |
1.14 |
0.47 |
3.25 |
1.02 |
| 7/16" |
5,000 |
7,000 |
0.66 |
1.18 |
0.56 |
3.7 |
1.06 |
| 1/2" |
6,500 |
9,000 |
0.75 |
1.42 |
0.63 |
4 |
1.38 |
| 5/8" |
9,250 |
13,500 |
0.91 |
2 |
0.75 |
4.94 |
/ |
| 3/4" |
12,500 |
19,250 |
1.31 |
2.5 |
1 |
6.09 |
Audited Supplier 
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