The Standoff,threaded,spacing, cataloged under National Stock Number 5340-00-903-5058, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5340-00-903-5058 |
| Primary Part Number | 21575 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Length | 0.778 INCHES MINIMUM AND 0.784 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Cross-Sectional Shape | ROUND |
| Surface Treatment | ANODIZE AND CHROMATE OVERALL |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| 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 |
|---|---|
| 21575 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| Reference | Meaning |
|---|---|
| 21575 | 5/9 Secondary reference United Technologies Corp Hamilton Sundstrand Corp |
NSN 5340-00-903-5058 is a Standoff,threaded,spacing, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-903-5058 has 1 manufacturer part number on file: 21575 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
3 possible matches (shared part number, not a government interchangeability claim): 4730-01-028-9252, 5998-01-074-2520, 5331-01-097-3636. Verify interchangeability with system specifications before substitution.
Key specifications for 21575: Length: 0.778 INCHES MINIMUM AND 0.784 INCHES MAXIMUM IN; Thread Direction: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD); Cross-Sectional Shape: ROUND; Surface Treatment: ANODIZE AND CHROMATE OVERALL. 7 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.