The Block,tackle, cataloged under National Stock Number 3940-00-162-4201, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-00-162-4201 |
| Primary Part Number | 11647841 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Sheave Bearing Lubrication Method | PRESSURE GREASE FITTING |
| Surface Treatment Document and Classification | TT-P-636 FED SPEC SINGLE TREATMENT RESPONSE SHELL |
| Surface Treatment Document and Classification | TT-P-664 FED SPEC SINGLE TREATMENT RESPONSE SHEAVE |
| Tackle Locking Device | NOT INCLUDED |
| Sheave Outside Diameter | 8.000 INCHES NOMINAL IN |
| Block Type | SNATCH |
| Center Pin Diameter | 1.495 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Style Designator | PULLEY PATTERN |
| Locking Style | SAFETY W/LATCH PIN |
| Shell Length | 11.940 INCHES NOMINAL IN |
| Bearing Type | PLAIN |
| Surface Treatment | PAINT SHELL |
| Surface Treatment | PRIMER SHEAVE |
| Sheave Quantity | 1 |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 11647841 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3940-00-162-4201 is a Block,tackle, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-00-162-4201 has 1 manufacturer part number on file: 11647841 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11647841: Sheave Bearing Lubrication Method: PRESSURE GREASE FITTING; Surface Treatment Document and Classification: TT-P-636 FED SPEC SINGLE TREATMENT RESPONSE SHELL; Surface Treatment Document and Classification: TT-P-664 FED SPEC SINGLE TREATMENT RESPONSE SHEAVE; Tackle Locking Device: NOT INCLUDED. 15 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.