The Standoff,threaded,spacing, cataloged under National Stock Number 5340-00-405-2640, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: AY.
| Parameter | Value |
|---|---|
| NSN | 5340-00-405-2640 |
| Primary Part Number | 2122703-283 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Left End Chamfer Angle | 12.5 DEGREES NOMINAL |
| Length | 2.500 INCHES NOMINAL IN |
| Groove Diameter | 0.843 INCHES MINIMUM AND 0.844 INCHES MAXIMUM IN |
| Style Designator | LEFT INTERNAL THREAD |
| Diameter | 1.0009 INCHES MINIMUM AND 1.0011 INCHES MAXIMUM IN |
| Right End Chamfer Angle | 12.5 DEGREES NOMINAL |
| Cross-Sectional Shape | ROUND |
| Groove Width | 0.088 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN |
| 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 | AY |
| Part Number | Manufacturer |
|---|---|
| 2122703-283 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 2122701-283 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5340-00-405-2640 is a Standoff,threaded,spacing, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-405-2640 has 1 manufacturer part number on file: 2122703-283 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 2122703-283: Left End Chamfer Angle: 12.5 DEGREES NOMINAL; Length: 2.500 INCHES NOMINAL IN; Groove Diameter: 0.843 INCHES MINIMUM AND 0.844 INCHES MAXIMUM IN; Style Designator: LEFT INTERNAL THREAD. 8 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.