The Block,tackle, cataloged under National Stock Number 3940-00-879-2137, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-00-879-2137 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Status | ACTIVE |
| Attachment Style | DRILLED SWIVEL EYE AND SHACKLE |
| Sheave Bearing Lubrication Method | SELF-LUBRICATED |
| Maximum Tackle Diameter Accommodated | 2.000 INCHES IN |
| Load Rating | 16000.0 POUNDS MAXIMUM LBS |
| Tackle Locking Device | NOT INCLUDED |
| Sheave Outside Diameter | 9.000 INCHES NOMINAL IN |
| Tackle Accommodated Type | FIBROUS ROPE |
| Block Type | SNATCH |
| Center Pin Diameter | 1.000 INCHES NOMINAL IN |
| Style Designator | OVAL PATTERN |
| Unable to Decode | UNABLE TO DECODE |
| Locking Style | SAFETY LOCKING |
| Nondefinitive Spec/std Data | 3 TYPE |
| Shell Length | 16.000 INCHES NOMINAL IN |
| Bearing Type | PLAIN |
| Sheave Quantity | 1 |
| Material | IRON AND STEEL SHEAVE |
| Material | STEEL CENTER PIN |
| Material | IRON AND STEEL SHELL |
| Material | COPPER ALLOY BEARING |
| 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 |
|---|---|
| 3074UK-16 | 3/9 Design control — primary reference U.S. Government activity |
| GGG-B-490 | 4/1 Identification reference U.S. Government activity |
| 3074UK-16 | 5/9 Secondary reference Apex Tool Group, Llc |
NSN 3940-00-879-2137 is a Block,tackle, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
Key specifications for 3940-00-879-2137: Attachment Style: DRILLED SWIVEL EYE AND SHACKLE; Sheave Bearing Lubrication Method: SELF-LUBRICATED; Maximum Tackle Diameter Accommodated: 2.000 INCHES IN; Load Rating: 16000.0 POUNDS MAXIMUM LBS. 21 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.