The Block,tackle, cataloged under National Stock Number 3940-00-414-6533, 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 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3940-00-414-6533 |
| Primary Part Number | 10876250 |
| 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 |
| Attachment Style | FLATTED STIFF SWIVEL HOOK |
| Becket Type | THIMBLE |
| Sheave Bearing Lubrication Method | SELF-LUBRICATED |
| Maximum Tackle Diameter Accommodated | 1.187 INCHES IN |
| Surface Treatment Document and Classification | TT-P-636 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Tackle Locking Device | NOT INCLUDED |
| Sheave Outside Diameter | 8.000 INCHES NOMINAL IN |
| Becket Quantity | 1 |
| Tackle Accommodated Type | WIRE ROPE |
| Block Type | REGULAR |
| Center Pin Diameter | 1.500 INCHES NOMINAL IN |
| Style Designator | OVAL PATTERN |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 8620H ASSN STD SINGLE MATERIAL RESPONSE OR SAE 8620H ASSN STD SINGLE MATERIAL RESPONSE CENTER PIN |
| Material Document and Classification | MIL-B-13501, COMP B MIL SPEC SINGLE MATERIAL RESPONSE AND MIL-B-5687, TYPE 1, COMP A MIL SPEC SINGLE MATERIAL RESPONSE BEARING |
| Shell Length | 17.812 INCHES NOMINAL IN |
| Bearing Type | PLAIN |
| Surface Treatment | PAINT OVERALL |
| Sheave Quantity | 1 |
| Material | COPPER ALLOY 546-CANCELED AND COPPER ALLOY 841 AND COPPER ALLOY BEARING |
| Material | STEEL AND STEEL COMP 8620H CENTER PIN |
| 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 |
|---|---|
| 10876250 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 3940004146533 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 3940-00-414-6533 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 3940-00-414-6533 has 1 manufacturer part number on file: 10876250 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 10876250: Attachment Style: FLATTED STIFF SWIVEL HOOK; Becket Type: THIMBLE; Sheave Bearing Lubrication Method: SELF-LUBRICATED; Maximum Tackle Diameter Accommodated: 1.187 INCHES IN. 21 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.