| 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) | 00-638-7945 (006387945) |
| NCB Code | USA (00) |
| Manufacturer | Boeing Company The |
| MRC | Criteria | Characteristic |
|---|---|---|
| AMCQ | Sheave Quantity | 1 |
| AMCT | Tackle Accommodated Type | WIRE ROPE |
| AMRR | Sheave Outside Diameter | 1.938 INCHES NOMINAL |
| AMRT | Center Pin Diameter | 0.250 INCHES NOMINAL |
| ACSK | Bearing Type | BALL |
| AMXC | Maximum Tackle Diameter Accommodated | 0.250 INCHES |
| ANNQ | Material And Location | ALUMINUM SHEAVE |
| ANNQ | Material And Location | STEEL BEARING |
| ANNQ | Material And Location | MAGNESIUM SHELL |
| ANNQ | Material And Location | STEEL CENTER PIN |
| AMCL | Block Type | REGULAR |
| AMXD | Tackle Locking Device | NOT INCLUDED |
| ANNR | Surface Treatment And Location | ANODIZED SHEAVE |
| AMDC | Antitoppling Device | NOT INCLUDED |
| MRC | Decoded Requirement | Clear Text Reply |
| STYL | Style Designator | OVAL PATTERN |
| Relevant Components for NSN - 3940-00-638-7945, 3940006387945 | ||||
| 3950-00-137-9573 (3950001379573) | 3960-00-475-1448 (3960004751448) | 3950-00-251-6162 (3950002516162) | 3940-01-392-5449 (3940013925449) | |
| 3950-01-496-9739 (3950014969739) | 3950-01-281-9473 (3950012819473) | 3930-00-444-7473 (3930004447473) | 3930-00-195-0590 (3930001950590) | |
| 3990-01-270-1550 (3990012701550) | 3940-00-169-4808 (3940001694808) | 3950-01-231-3665 (3950012313665) | 3950-00-451-0330 (3950004510330) | |
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