The Block,tackle, cataloged under National Stock Number 3940-00-264-4746, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-00-264-4746 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Status | ACTIVE |
| Sheave Bearing Lubrication Method | PRESSURE GREASE FITTING |
| Maximum Tackle Diameter Accommodated | 0.875 INCHES IN |
| Tackle Locking Device | NOT INCLUDED |
| Sheave Outside Diameter | 20.000 INCHES NOMINAL IN |
| Tackle Accommodated Type | WIRE ROPE |
| Block Type | REGULAR |
| Center Pin Diameter | 2.247 INCHES NOMINAL IN |
| Style Designator | DIAMOND PATTERN |
| Unable to Decode | UNABLE TO DECODE |
| Bearing Type | PLAIN |
| Sheave Quantity | 3 |
| Material | STEEL SHEAVE |
| Material | STEEL SHELL |
| Material | STEEL CENTER PIN |
| Material | COPPER ALLOY BEARING |
| Reference Number Differentiating Characteristics | AS DIFFERENT1ATED BY SHEAVE QUANTITY AND BY MAXIMUM TACKL DIAMETER ACCOMMODATED |
| Antitoppling Device | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 770369 PIECE 1-3 TO 20 | 3/1 Design control — primary reference U.S. Government activity |
| S1801-770369PC1-3T020 | 5/9 Secondary reference U.S. Government activity |
NSN 3940-00-264-4746 is a Block,tackle, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3940-00-264-4747. Verify interchangeability with system specifications before substitution.
Key specifications for 3940-00-264-4746: Sheave Bearing Lubrication Method: PRESSURE GREASE FITTING; Maximum Tackle Diameter Accommodated: 0.875 INCHES IN; Tackle Locking Device: NOT INCLUDED; Sheave Outside Diameter: 20.000 INCHES NOMINAL IN. 17 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.