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| Item Name | Block Tackle |
| Federal Supply Group (FSG) | Materials Handling Equipment |
| Federal Supply Class (FSC) | 3940 Blocks Tackle Rigging and Slings |
| National Item Identification Number (NIIN) | 00-239-8778 (002398778) |
| NCB Code | USA (00) |
| Manufacturer | Federal Specifications |
| MRC | Criteria | Characteristic |
|---|---|---|
| AMCL | BLOCK TYPE | REGULAR |
| AMCT | TACKLE ACCOMMODATED TYPE | WIRE ROPE |
| AMDB | BECKET TYPE | THIMBLE |
| AMDC | ANTITOPPLING DEVICE | NOT INCLUDED |
| AMRY | BECKET QUANTITY | 1 |
| AMXC | MAXIMUM TACKLE DIAMETER ACCOMMODATED | 0.625 INCHES |
| AMXD | TACKLE LOCKING DEVICE | NOT INCLUDED |
| STYL | STYLE DESIGNATOR | DIAMOND PATTERN |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND A GRADE AND 2 STYLE |
| AMCQ | SHEAVE QUANTITY | 2 |
| SR-1 | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | GG-B-500 |
| AMRR | SHEAVE OUTSIDE DIAMETER | 10.000 INCHES NOMINAL |
| AGCS | MAXIMUM LOAD RATING | 600.0 POUNDS |
| ACSK | BEARING TYPE | PLAIN |
| SR-1 | SPEC/STD CONTROLLING DATA | |
| ANNR | SURFACE TREATMENT AND LOCATION | ZINC MIL-Z-17871 CENTER PIN ZINC MIL-Z-17871 SHEAVE ZINC MIL-Z-17871 SHELL |
| AMWZ | SHEAVE BEARING LUBRICATION METHOD | SELF-LUBRICATED |
| AMXF | ATTACHMENT STYLE | FLATTED LOOSE SWIVEL EYE WITH SWIVEL HOOK |
| ANNQ | MATERIAL AND LOCATION | BRONZE MIL-B-5687 TYPE 1 COMP A BEARING STEEL CENTER PIN STEEL, QQ-S-681 SHEAVE STEEL, QQ-S-741 SHELL |
| SR-1 | MANUFACTURERS CODE | 81348 |
| Relevant Components for NSN - 3940-00-239-8778, 3940002398778 | ||||
| 3930-00-239-5255 (3930002395255) | 3950-00-754-3918 (3950007543918) | 3950-01-501-2275 (3950015012275) | 3950-01-476-4820 (3950014764820) | |
| 3960-00-533-7504 (3960005337504) | 3950-01-316-5767 (3950013165767) | 3940-01-493-5652 (3940014935652) | 3950-01-366-4692 (3950013664692) | |
| 3930-01-168-9688 (3930011689688) | 3910-00-959-8891 (3910009598891) | 3950-00-115-4270 (3950001154270) | 3950-01-185-1204 (3950011851204) | |
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