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National Stock Number: 3940-01-373-2734
Federal Supply Class: 3940
National Item Identification Number: 013732734
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:
MIL-B-24220 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | MILB24220TYIIIC L1SZ12RIG25 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH |
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Techincal Specification:
STYLE DESIGNATOR | HALF-OVAL PATTERN | SHELL LENGTH | 12.000 INCHES MINIMUM | SHEAVE OUTSIDE DIAMETER | 8.000 INCHES MINIMUM | CENTER PIN DIAMETER | 1.000 INCHES MINIMUM | BLOCK TYPE | REGULAR | MATERIAL AND LOCATION | STEEL CENTER PIN AND | | STEEL SHEAVE AND | | WOOD SHELL | SURFACE TREATMENT AND LOCATION | GALVANIZED SHEAVE | SHEAVE QUANTITY | 2 | BEARING TYPE | PLAIN | TACKLE ACCOMMODATED TYPE | FIBROUS ROPE | MAXIMUM TACKLE DIAMETER ACCOMMODATED | 1.938 INCHES | TACKLE LOCKING DEVICE | INCLUDED | ANTITOPPLING DEVICE | NOT INCLUDED | ATTACHMENT STYLE | OBLONG SWIVEL EYE AND SHACKLE | MAXIMUM LOAD RATING | 15000.0 POUNDS | SPECIAL FEATURES | RIG NO. 1 | NONDEFINITIVE SPEC/STD DATA | 3 TYPE AND | | 1 CLASS AND | | 12 SIZE | SPEC/STD CONTROLLING DATA | | MANUFACTURERS CODE | 81349 | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-B-24220 |
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