The Block,tackle, cataloged under National Stock Number 3940-00-202-2179, 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17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-00-202-2179 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Status | ACTIVE |
| Attachment Style | FLATTED LOOSE SWIVEL SAFETY SNAP HOOK |
| Maximum Tackle Diameter Accommodated | 0.375 INCHES IN |
| Tackle Locking Device | NOT INCLUDED |
| Sheave Outside Diameter | 1.500 INCHES NOMINAL IN |
| Tackle Accommodated Type | FIBROUS ROPE |
| Block Type | REGULAR |
| Center Pin Diameter | 0.188 INCHES NOMINAL IN |
| Style Designator | HALYARD PATTERN |
| Unable to Decode | UNABLE TO DECODE |
| Shell Length | 2.250 INCHES NOMINAL IN |
| Bearing Type | PLAIN |
| Sheave Quantity | 1 |
| Material | STEEL CENTER PIN |
| Material | IRON SHELL |
| Material | IRON SHEAVE |
| Material | IRON 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 |
|---|---|
| 368SIZE7AND251SIZE2 | 3/9 Design control — primary reference North and Judd Inc Wilcox-Crittenden Div |
NSN 3940-00-202-2179 is a Block,tackle, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
Key specifications for 3940-00-202-2179: Attachment Style: FLATTED LOOSE SWIVEL SAFETY SNAP HOOK; Maximum Tackle Diameter Accommodated: 0.375 INCHES IN; Tackle Locking Device: NOT INCLUDED; Sheave Outside Diameter: 1.500 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.