The Bracket,mounting, cataloged under National Stock Number 5340-01-641-6057, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-641-6057 |
| Primary Part Number | 566-6985431-7 |
| Item Name | Bracket,mounting |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Mounting Hole Quantity | 3 |
| Overall Thickness | 0.500 INCHES NOMINAL IN |
| Mounting Hole Diameter | 0.531 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| Mounting Hole Type | PLAIN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 566-6985431-7 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H623-0503-7 | 5/2 Secondary reference U.S. Government activity |
| 566-6985431 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5340-01-641-6057 is a Bracket,mounting, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-641-6057 has 1 manufacturer part number on file: 566-6985431-7 (Naval Sea Systems Command).
Key specifications for 566-6985431-7: Mounting Hole Quantity: 3; Overall Thickness: 0.500 INCHES NOMINAL IN; Mounting Hole Diameter: 0.531 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: RETAINER, STAVE, CROSSHEAD. 5 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.