The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-012-0509, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Smith and Smith Aircraft Co. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 5340-01-012-0509 |
| Primary Part Number | M12227 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Smith and Smith Aircraft Co |
| Status | ACTIVE |
| Left End Chamfer Angle | 45.0 DEGREES NOMINAL |
| Length | 1.090 INCHES NOMINAL IN |
| Right End Chamfer Depth | 0.032 INCHES NOMINAL IN |
| Style Designator | PROJECTION ONE END W/ RIGHT EXTERNAL THREAD |
| Diameter | 0.250 INCHES NOMINAL IN |
| Right End Chamfer Angle | 45.0 DEGREES NOMINAL |
| Right Slot Width | 0.048 INCHES NOMINAL IN |
| Cross-Sectional Shape | ROUND |
| Right Slot Depth | 0.060 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| M12227 PRIMARY | Smith and Smith Aircraft Co (USA) |
| Reference | Meaning |
|---|---|
| M12227 | 5/9 Secondary reference Ncr Corp Power Systems Div |
| M12227 | 5/9 Secondary reference Raytheon Company |
NSN 5340-01-012-0509 is a Standoff,threaded,spacing, manufactured by Smith and Smith Aircraft Co, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-012-0509 has 1 manufacturer part number on file: M12227 (Smith and Smith Aircraft Co).
Key specifications for M12227: Left End Chamfer Angle: 45.0 DEGREES NOMINAL; Length: 1.090 INCHES NOMINAL IN; Right End Chamfer Depth: 0.032 INCHES NOMINAL IN; Style Designator: PROJECTION ONE END W/ RIGHT EXTERNAL THREAD. 9 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.