The Block,tackle, cataloged under National Stock Number 3940-01-421-7853, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. The manufacturer of record is Universal Fabric Structures, Inc.. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-01-421-7853 |
| Primary Part Number | 9434538-10 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | Universal Fabric Structures, Inc. |
| Status | ACTIVE |
| Sheave Outside Diameter | 3.000 INCHES NOMINAL IN |
| Block Type | SNATCH |
| Style Designator | PLATE PATTERN |
| Locking Style | SAFETY LOCKING |
| Functional Description | MAIN ARCH WINCH PULLEY ASSY "R". |
| Sheave Quantity | 1 |
| Material | STEEL CORROSION RESISTING SHEAVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 9434538-10 PRIMARY | Universal Fabric Structures, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 9434538 | D/9 Drawing number reference only U.S. Government activity |
NSN 3940-01-421-7853 is a Block,tackle, manufactured by Universal Fabric Structures, Inc., classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-01-421-7853 has 1 manufacturer part number on file: 9434538-10 (Universal Fabric Structures, Inc.).
Key specifications for 9434538-10: Sheave Outside Diameter: 3.000 INCHES NOMINAL IN; Block Type: SNATCH; Style Designator: PLATE PATTERN; Locking Style: SAFETY LOCKING. 7 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.