The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-283-0558, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-283-0558 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Length | 1.352 INCHES MINIMUM AND 1.358 INCHES MAXIMUM IN |
| Thread Length | 0.470 INCHES NOMINAL RIGHT EXTERNAL IN |
| Material Document and Classification | AMS 5640 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Diameter | 0.250 INCHES NOMINAL IN |
| Cross-Sectional Shape | ROUND |
| Shoulder Diameter | 0.188 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN |
| Surface Treatment | PAINT OVERALL |
| Distance From End to Hole Center | 0.735 INCHES NOMINAL IN |
| Material | STEEL COMP 303 OR STEEL COMP 303SE OVERALL |
| Shoulder Length | 0.022 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN |
| Hole Quantity Perpendicular to Axis | 1 |
| 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 |
|---|---|
| 278022 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-283-0558 is a Standoff,threaded,spacing, classified under FSC 5340, Hardware, Commercial. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5915-01-552-5174, 5130-01-652-4831. Verify interchangeability with system specifications before substitution.
Key specifications for 5340-01-283-0558: Length: 1.352 INCHES MINIMUM AND 1.358 INCHES MAXIMUM IN; Thread Length: 0.470 INCHES NOMINAL RIGHT EXTERNAL IN; Material Document and Classification: AMS 5640 ASSN STD ALL MATERIAL RESPONSES OVERALL; Diameter: 0.250 INCHES NOMINAL IN. 11 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.