The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-666-4639, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is General Atomics Dba General Atomics Corp. Government technical data includes 12 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-666-4639 |
| Primary Part Number | 34000D1421088 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | General Atomics Dba General Atomics Corp |
| Status | ACTIVE |
| Length | 1.102 INCHES NOMINAL IN |
| Style Designator | LEFT INTERNAL AND RIGHT INTERNAL THREADS |
| Diameter | 0.312 INCHES NOMINAL IN |
| Nominal Thread Size | 10.0 MILLIMETERS LEFT EXTERNAL MM |
| Nominal Thread Size | 10.0 MILLIMETERS RIGHT EXTERNAL MM |
| Cross-Sectional Shape | ROUND |
| Thread Class | 2B RIGHT EXTERNAL |
| Thread Class | 2B LEFT EXTERNAL |
| Thread Quantity Per Inch | 32 RIGHT EXTERNAL |
| Thread Quantity Per Inch | 32 LEFT EXTERNAL |
| Thread Series Designator | UNF RIGHT EXTERNAL |
| Thread Series Designator | UNF LEFT EXTERNAL |
| 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 |
|---|---|
| 34000D1421088 PRIMARY | General Atomics Dba General Atomics Corp (USA) |
NSN 5340-01-666-4639 is a Standoff,threaded,spacing, manufactured by General Atomics Dba General Atomics Corp, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-666-4639 has 1 manufacturer part number on file: 34000D1421088 (General Atomics Dba General Atomics Corp).
Key specifications for 34000D1421088: Length: 1.102 INCHES NOMINAL IN; Style Designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS; Diameter: 0.312 INCHES NOMINAL IN; Nominal Thread Size: 10.0 MILLIMETERS LEFT EXTERNAL MM. 12 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.