The Block,tackle, cataloged under National Stock Number 3940-00-276-7499, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3940-00-276-7499 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Status | ACTIVE |
| Attachment Style | CLEWLINE EYE |
| Becket Type | CLOSED SOCKET |
| Sheave Bearing Lubrication Method | SELF-LUBRICATED |
| Maximum Tackle Diameter Accommodated | 0.625 INCHES IN |
| Tackle Locking Device | NOT INCLUDED |
| Sheave Outside Diameter | 12.000 INCHES NOMINAL IN |
| Becket Quantity | 1 |
| Tackle Accommodated Type | WIRE ROPE |
| Block Type | REGULAR |
| Center Pin Diameter | 1.750 INCHES NOMINAL IN |
| Style Designator | OVAL PATTERN |
| Shell Length | 19.000 INCHES NOMINAL IN |
| Bearing Type | PLAIN |
| Sheave Quantity | 1 |
| Reference Number Differentiating Characteristics | ESS FEAT |
| 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 |
|---|---|
| 805-2453185TYPEXXX | 3/1 Design control — primary reference U.S. Government activity |
NSN 3940-00-276-7499 is a Block,tackle, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
Key specifications for 3940-00-276-7499: Attachment Style: CLEWLINE EYE; Becket Type: CLOSED SOCKET; Sheave Bearing Lubrication Method: SELF-LUBRICATED; Maximum Tackle Diameter Accommodated: 0.625 INCHES IN. 16 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.