| 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) | 00-555-0603 (005550603) |
| NCB Code | USA (00) |
| Manufacturer | A And M Aerospace Inc, Triumph Actuation Systems Llc, Tactair Fluid Controls Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AMCT | Tackle Accommodated Type | WIRE ROPE |
| AMDC | Antitoppling Device | NOT INCLUDED |
| AMRT | Center Pin Diameter | 0.811 INCHES MINIMUM AND 0.812 INCHES MAXIMUM |
| AMRR | Sheave Outside Diameter | 13.250 INCHES NOMINAL |
| STYL | Style Designator | HALF-STRAP PATTERN |
| AMXC | Maximum Tackle Diameter Accommodated | 0.750 INCHES |
| AMXD | Tackle Locking Device | NOT INCLUDED |
| ANNQ | Material And Location | ALUMINUM SHELL |
| ANNQ | Material And Location | ALUMINUM SHEAVE |
| MRC | Decoded Requirement | Clear Text Reply |
| AMCQ | Sheave Quantity | 1 |
| ANNQ | Material And Location | STEEL CENTER PIN |
| AMCL | Block Type | REGULAR |
| Relevant Components for NSN - 3940-00-555-0603, 3940005550603 | ||||
| 3990-01-597-3360 (3990015973360) | 3990-01-596-4012 (3990015964012) | 3990-01-596-4007 (3990015964007) | 3990-01-595-6960 (3990015956960) | |
| 3990-01-595-4800 (3990015954800) | 3990-01-595-4719 (3990015954719) | 3990-01-595-0282 (3990015950282) | 3990-01-590-4391 (3990015904391) | |
| 3990-01-589-4504 (3990015894504) | 3990-01-588-5068 (3990015885068) | 3990-01-581-4986 (3990015814986) | 3990-01-574-5249 (3990015745249) | |
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