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National Stock Number:
3940-01-491-0456
Federal Supply Class:
3940
National Item Identification Number:
014910456
Description:
BLOCK,TACKLE
Detail:
A MECHANICAL DEVICE, CONSISTING OF A PULLEY(S) OR SHEAVE(S) ENCASED IN A SHELL OR FRAME WHICH MAY BE PROVIDED WITH A MEANS SUCH AS A HOOK, EYE, STRAP, SCREW, ETC., BY WHICH IT MAY BE ATTACHED TO AN OBJECT. IT IS USED TO CHANGE DIRECTION OF A RUNNING ROPE AND/OR TO GAIN A MECHANICAL ADVANTAGE.
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Manufacturer Information:
| 571-6580814 ITEM 18 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 8004287 | 76257 | CROSBY GROUP INC THE MCKISSICK PLANT DIV | | M903268E | 76257 | CROSBY GROUP INC THE MCKISSICK PLANT DIV |
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Techincal Specification:
| STYLE DESIGNATOR | ROUND PATTERN | | SHELL LENGTH | 31.120 INCHES NOMINAL | | SHEAVE OUTSIDE DIAMETER | 18.000 INCHES NOMINAL | | BLOCK TYPE | REGULAR | | MATERIAL AND LOCATION | STEEL OVERALL | | SURFACE TREATMENT AND LOCATION | GALVANIZED OVERALL | | SHEAVE QUANTITY | 1 | | BEARING TYPE | ROLLER | | SHEAVE BEARING LUBRICATION METHOD | SELF-LUBRICATED | | TACKLE ACCOMMODATED TYPE | WIRE ROPE | | TACKLE LOCKING DEVICE | NOT INCLUDED | | BECKET TYPE | ROUND EYE | | BECKET QUANTITY | 1 | | ATTACHMENT STYLE | DRILLED SWIVEL EYE AND SHACKLE | | MAXIMUM LOAD RATING | 28000.0 POUNDS | | SPECIAL FEATURES | PROOF TEST TO 28 TONS |
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