The Block,tackle, cataloged under National Stock Number 3940-00-375-1933, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3940-00-375-1933 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Status | ACTIVE |
| Attachment Style | CLEWLINE EYE |
| Sheave Bearing Lubrication Method | SELF-LUBRICATED |
| Maximum Tackle Diameter Accommodated | 1.625 INCHES IN |
| Tackle Locking Device | NOT INCLUDED |
| Sheave Outside Diameter | 12.000 INCHES NOMINAL IN |
| Tackle Accommodated Type | WIRE ROPE |
| Block Type | REGULAR |
| Center Pin Diameter | 3.000 INCHES NOMINAL IN |
| Style Designator | HALF-STRAP PATTERN |
| Unable to Decode | UNABLE TO DECODE |
| Material Document and Classification | MIL-S-16974, GRADE 1023W MIL SPEC SINGLE MATERIAL RESPONSE SHELL W |
| Bearing Type | PLAIN |
| Unable to Decode | UNABLE TO DECODE |
| Sheave Quantity | 1 |
| Material | STEEL COMP 1023W SHELL W |
| Material | STEEL SHEAVE |
| 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 |
|---|---|
| S9400-921735 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3940-00-375-1933 is a Block,tackle, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
Key specifications for 3940-00-375-1933: Attachment Style: CLEWLINE EYE; Sheave Bearing Lubrication Method: SELF-LUBRICATED; Maximum Tackle Diameter Accommodated: 1.625 INCHES IN; Tackle Locking Device: NOT INCLUDED. 18 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.