| 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) | 01-582-3165 (015823165) |
| NCB Code | USA (01) |
| Manufacturer | Crosby Group Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| FEAT | SPECIAL FEATURES | BRONZE BUSHED; NEW STYLE BLOCKS FEATURE HIGHER WORKING LOAD LIMITS; PAINTED OR GALVANIZED STEEL WITH REPLACEABLE WOOD BUMPERS; LASER CUT SIDE PLATE OPENS FOR INSERTION OF WIRE ROPE; INCORPORATES EXCLUSIVE BOLT RETAINING SPRINT TO ASSURE NO LOST BOLTS, PLUS UTILIZES SECONDARY RETAINING PIN; BRONZED BUSHED SHEAVES WITH LARGER BEARING DIAMETER FOR EXTENDED BLOCK LIFE; UTILIZES CROSBY N SYLE HOOKS WITH INTEGRATED LATCH; LUBRICATED CENTER PIN; 10 INCH AND 12 INCH SIZES UTILIZE STEEL SHEAVES ; BLOCK SIZE-10 INCH |
| Relevant Components for NSN - 3940-01-582-3165, 3940015823165 | ||||
| 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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