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National Stock Number:
3940-00-375-1933
Federal Supply Class:
3940
National Item Identification Number:
003751933
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:
| S9400-921735 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| ATTACHMENT STYLE | CLEWLINE EYE | | BEARING TYPE | PLAIN | | BLOCK TYPE | REGULAR | | CENTER PIN DIAMETER | 3.000 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-16974, GRADE 1023W MIL SPEC SINGLE MATERIAL RESPONSE SHELL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-866, COMP 3115 MIL SPEC SINGLE MATERIAL RESPONSE CENTER PIN SECOND LAYER | | MATERIAL | COPPER ALLOY BEARING | | MATERIAL | STEEL COMP 1023W SHELL | | MATERIAL | STEEL COMP 3115 CENTER PIN SECOND LAYER | | MATERIAL | STEEL SHEAVE | | MAXIMUM TACKLE DIAMETER ACCOMMODATED | 1.625 INCHES | | SHEAVE BEARING LUBRICATION METHOD | SELF-LUBRICATED | | SHEAVE OUTSIDE DIAMETER | 12.000 INCHES NOMINAL | | SHEAVE QUANTITY | 1 | | STYLE DESIGNATOR | HALF-STRAP PATTERN | | SURFACE TREATMENT | ZINC OVERALL | | TACKLE ACCOMMODATED TYPE | WIRE ROPE |
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