The Bracket,mounting, cataloged under National Stock Number 5340-01-309-4974, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-309-4974 |
| Primary Part Number | 2921253 |
| Item Name | Bracket,mounting |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| 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 |
|---|---|
| 2921253 PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| Reference | Meaning |
|---|---|
| 2921253 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 780539 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
NSN 5340-01-309-4974 is a Bracket,mounting, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-309-4974 has 1 manufacturer part number on file: 2921253 (Lockheed Martin Corporation Div Rms - Mitchel Field).
Key specifications for 2921253: Special Features: ALUMINUM ALLOY,QQ-A-250/8,ALLOY 5052-H32; CHROMATE,MIL-C-5541,CLASS 1; 2.375 IN. LG; 0.750 IN. WIDE; 0.172 IN. H; 2 MOUNTING SLOTS 0.375 IN LG BY 0.164 IN. MIN AND 0.174 IN. MAX WIDE; MOUNTING HOLE FOR INSERT 0.406 IN. MIN AND 0.409 IN. MAX DIA; INSERT SCREW THREAD INCLUDED P/N 2922500 CAGEC 10001 IN. 0 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.