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National Stock Number:
3940-01-083-4224
Federal Supply Class:
3940
National Item Identification Number:
010834224
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-L-28654 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| BEARING TYPE | ROLLER | | LOAD RATING | 800000.0 POUNDS MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-15083, GRADE 80-40 MIL SPEC SINGLE MATERIAL RESPONSE SHEAVE FIRST LAYER | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-890 MIL SPEC SINGLE MATERIAL RESPONSE YOKE | | MATERIAL | STEEL COMP 80-40 SHEAVE FIRST LAYER | | MATERIAL | STEEL YOKE | | MAXIMUM TACKLE DIAMETER ACCOMMODATED | 1.000 INCHES | | NONDEFINITIVE SPEC/STD DATA | 2 GROUP | | SHEAVE BEARING LUBRICATION METHOD | PRESSURE GREASE FITTING | | SHEAVE OUTSIDE DIAMETER | 20.000 INCHES NOMINAL | | SHEAVE QUANTITY | 7 | | STYLE DESIGNATOR | OVAL PATTERN | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | TACKLE ACCOMMODATED TYPE | WIRE ROPE |
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