The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-391-1345, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-391-1345 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Width Across Flats | 0.2500 INCHES NOMINAL IN |
| Length | 2.7450 INCHES MINIMUM AND 2.7550 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416, TY 2, CL 2 FED SPEC SINGLE TREATMENT RESPONSE STANDOFF |
| Thread Length | 0.3750 INCHES NOMINAL RIGHT INTERNAL IN |
| Style Designator | LEFT INTERNAL AND RIGHT INTERNAL THREADS |
| Material Document and Classification | QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE STANDOFF |
| Thread Direction | RIGHT-HAND RIGHT INTERNAL |
| Nominal Thread Size | 0.1380 INCHES RIGHT INTERNAL IN |
| Cross-Sectional Shape | HEXAGON |
| Surface Treatment | CADMIUM AND CHROMATE STANDOFF |
| Thread Class | 2B RIGHT INTERNAL |
| Thread Quantity Per Inch | 32 RIGHT INTERNAL |
| Material | COPPER ALLOY 260 OR COPPER ALLOY 262 OR COPPER ALLOY 268 OR COPPER ALLOY 270 OR COPPER ALLOY 272 OR COPPER ALLOY 274 OR COPPER ALLOY 280 OR COPPER ALLOY 331 OR COPPER ALLOY 332 OR COPPER ALLOY 335 OR COPPER ALLOY 340 OR COPPER ALLOY 342 OR COPPER ALLOY 344 OR COPPER ALLOY 345 OR COPPER ALLOY 347 OR COPPER ALLOY 348 OR COPPER ALLOY 350 OR COPPER ALLOY 353 OR COPPER ALLOY 356 OR COPPER ALLOY 360 OR COPPER ALLOY 370 OR COPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 465 OR COPPER ALLOY 466 OR COPPER ALLOY 467 OR COPPER ALLOY 482 STANDOFF |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) RIGHT INTERNAL |
| 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 |
| Reference | Meaning |
|---|---|
| NAS1831B4C44 | 3/2 Design control — primary reference U.S. Government activity |
| NAS1831 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5340-01-391-1345 is a Standoff,threaded,spacing, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-391-1345: Width Across Flats: 0.2500 INCHES NOMINAL IN; Length: 2.7450 INCHES MINIMUM AND 2.7550 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416, TY 2, CL 2 FED SPEC SINGLE TREATMENT RESPONSE STANDOFF; Thread Length: 0.3750 INCHES NOMINAL RIGHT INTERNAL IN. 14 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.