The Block,tackle, cataloged under National Stock Number 3940-01-353-7984, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. The manufacturer of record is The Crosby Group Llc Dba the Crosby Group. Government technical data includes 8 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 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 | 3940-01-353-7984 |
| Primary Part Number | H22B |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | The Crosby Group Llc Dba the Crosby Group |
| Status | ACTIVE |
| Attachment Style | FRONT EYE ROUND LOOSE HOOK |
| Tackle Locking Device | NOT INCLUDED |
| Tackle Accommodated Type | FIBROUS ROPE |
| Block Type | REGULAR |
| Style Designator | OVAL PATTERN |
| Sheave Quantity | 2 |
| Material | WOOD SHELL |
| Material | COPPER ALLOY BEARING |
| 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 |
|---|---|
| H22B PRIMARY | The Crosby Group Llc Dba the Crosby Group (USA) |
NSN 3940-01-353-7984 is a Block,tackle, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-01-353-7984 has 1 manufacturer part number on file: H22B (The Crosby Group Llc Dba the Crosby Group).
1 possible match (shared part number, not a government interchangeability claim): 3940-01-359-7365. Verify interchangeability with system specifications before substitution.
Key specifications for H22B: Attachment Style: FRONT EYE ROUND LOOSE HOOK; Tackle Locking Device: NOT INCLUDED; Tackle Accommodated Type: FIBROUS ROPE; Block Type: REGULAR. 8 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.