The Boom,hoist Support, cataloged under National Stock Number 3950-01-386-3422, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3950-01-386-3422 |
| Primary Part Number | 6817290 ASSY 96 |
| Item Name | Boom,hoist Support |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | ITEM IS AN ADJUSTABLE BRACE BETWEEN THE FORWARD BOOM AND THE DIHEDRAL; O/A LG AT MIDDLE OF ADJUSTMENT IS 72IN.; ITEM IS MADE FROM TWO PIECES OF 4"X4"X0.25" ALUMINUM ALLOY 5456-H111 STRUCTURAL TUBE ATTACHED BY A 2"-4 ACME MONEL SCREW AND MONEL THREADED INSERTS BOLTED TO THE INSIDE OF THE TUBES; SCREW IS TURNED BY 0.75" DIA MONEL BAR THRU ITS CENTER TO ADJUST OVERALL LENGTH; TOP END OF ADJUSTABLE BRACE HAS A CLEVIS OF ALUMINUM ALLOY WITH A 1" DIA HOLE FOR ATTACHMENT TO A PAD ON THE FORWARD BOOM BY A 1" DIA, 3" LONG CRES QUICK RELEASE IN; BOTTOM END OF THE BRACE HAS A 1.375" THICK PAD OF ALLUMINUM ALLOY WITH A 1" DIA HOLE FOR ATTACHMENT TO AN INTERLOCK BY A 1" DIA, 3.125" LONG CRES QUICK RELEASE PIN; THE INTERLOCK FITS INTO AN INTERLOCK RECEIVER ON THE TOP SIDE OF THE DIHEDRAL IN |
| 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 |
|---|---|
| 6817290 ASSY 96 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6817290 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3950-01-386-3422 is a Boom,hoist Support, manufactured by Naval Sea Systems Command, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-01-386-3422 has 1 manufacturer part number on file: 6817290 ASSY 96 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3950-01-386-4148. Verify interchangeability with system specifications before substitution.
Key specifications for 6817290 ASSY 96: General Characteristics Item Description: ITEM IS AN ADJUSTABLE BRACE BETWEEN THE FORWARD BOOM AND THE DIHEDRAL; O/A LG AT MIDDLE OF ADJUSTMENT IS 72IN.; ITEM IS MADE FROM TWO PIECES OF 4"X4"X0.25" ALUMINUM ALLOY 5456-H111 STRUCTURAL TUBE ATTACHED BY A 2"-4 ACME MONEL SCREW AND MONEL THREADED INSERTS BOLTED TO THE INSIDE OF THE TUBES; SCREW IS TURNED BY 0.75" DIA MONEL BAR THRU ITS CENTER TO ADJUST OVERALL LENGTH; TOP END OF ADJUSTABLE BRACE HAS A CLEVIS OF ALUMINUM ALLOY WITH A 1" DIA HOLE FOR ATTACHMENT TO A PAD ON THE FORWARD BOOM BY A 1" DIA, 3" LONG CRES QUICK RELEASE IN; BOTTOM END OF THE BRACE HAS A 1.375" THICK PAD OF ALLUMINUM ALLOY WITH A 1" DIA HOLE FOR ATTACHMENT TO AN INTERLOCK BY A 1" DIA, 3.125" LONG CRES QUICK RELEASE PIN; THE INTERLOCK FITS INTO AN INTERLOCK RECEIVER ON THE TOP SIDE OF THE DIHEDRAL IN; Special Features: FOR 6-INCH EXTERNAL COUNTERMEASURE-LIFTING AND HANDLING FIXTURE; End Item Identification: W/S CODE 23, SHIP OHIO CLASS SSN. 1 specification is 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.