The Block,rear, cataloged under National Stock Number 3940-01-325-3129, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Block,rear |
| FSC / FSG | 3940 — Blocks, Tackle, Rigging, and Slings (FSG 39) |
| Manufacturers | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (CAGE 77445) |
| Parameter | Value |
|---|---|
| NSN | 3940-01-325-3129 |
| Primary Part Number | PWA57544-2 |
| Item Name | Block,rear |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| PWA57544-2 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 3940-01-325-3129 is a Block,rear, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-01-325-3129 has 1 manufacturer part number on file: PWA57544-2 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
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.