The Hook Block Assembly, cataloged under National Stock Number 3940-01-517-4249, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. The manufacturer of record is Pierce Manufacturing Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-01-517-4249 |
| Primary Part Number | 1212351 |
| Item Name | Hook Block Assembly |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | Pierce Manufacturing Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 1212351 PRIMARY | Pierce Manufacturing Inc (USA) |
NSN 3940-01-517-4249 is a Hook Block Assembly, manufactured by Pierce Manufacturing Inc, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-01-517-4249 has 1 manufacturer part number on file: 1212351 (Pierce Manufacturing Inc).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-731-6631. Verify interchangeability with system specifications before substitution.
Key specifications for 1212351: End Item Identification: 4210-01-517-4249 TFFT (TACTICAL FIRE FIGHTING TRUCK). 0 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.