The Hook Block Assembly, cataloged under National Stock Number 3940-01-653-8178, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. The manufacturer of record is Ingersoll Rand Co. 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 | 3940-01-653-8178 |
| Primary Part Number | HLK-KR590A |
| Item Name | Hook Block Assembly |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | Ingersoll Rand Co |
| 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 |
|---|---|
| HLK-KR590A PRIMARY | Ingersoll Rand Co (USA) |
NSN 3940-01-653-8178 is a Hook Block Assembly, manufactured by Ingersoll Rand Co, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-01-653-8178 has 1 manufacturer part number on file: HLK-KR590A (Ingersoll Rand Co).
Key specifications for HLK-KR590A: Part Name Assigned by Controlling Agency: TOP HOOK ASSEMBLY; End Item Identification: INGERSOLL RAND,CAGE 30760,AIR CHAIN HOIST,HLK SERIES. 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.