The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-255-6722, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Astronautics Corporation of America. 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. 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 | 5340-01-255-6722 |
| Primary Part Number | 121006 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Astronautics Corporation of America |
| Status | ACTIVE |
| Length | 0.787 INCHES MINIMUM AND 0.789 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL A |
| Style Designator | INTERNALLY THREADED FULL LENGTH |
| Material Document and Classification | QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.250 INCHES NOMINAL IN |
| Cross-Sectional Shape | ROUND |
| Surface Treatment | CHROMATE OVERALL |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| 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 |
|---|---|
| 121006 PRIMARY | Astronautics Corporation of America (USA) |
NSN 5340-01-255-6722 is a Standoff,threaded,spacing, manufactured by Astronautics Corporation of America, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-255-6722 has 1 manufacturer part number on file: 121006 (Astronautics Corporation of America).
2 possible matches (shared part number, not a government interchangeability claim): 5331-01-436-2529, 6550-01-580-8815. Verify interchangeability with system specifications before substitution.
Key specifications for 121006: Length: 0.787 INCHES MINIMUM AND 0.789 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL A; Style Designator: INTERNALLY THREADED FULL LENGTH; Material Document and Classification: QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.