The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-066-5056, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-066-5056 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Length | 1.370 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.312 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Style Designator | LEFT INTERNAL THREAD |
| Material Document and Classification | QQ-A-200/8 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-200/9 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-225/3 FED SPEC 3RD MATERIAL RESPONSE OR QQ-A-225/6 FED SPEC 4TH MATERIAL RESPONSE OR QQ-A-225/8 FED SPEC 5TH MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape | HEXAGON |
| Surface Treatment | CHROMATE OVERALL |
| Material | ALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6063 OR ALUMINUM ALLOY 2011 OR 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 |
| Reference | Meaning |
|---|---|
| 540-9227-003 | 5/9 Secondary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| 540-9227-003 | 3/2 Design control — primary reference U.S. Government activity |
| NAS1831AC4C22 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 8226-A-0632-16 | 5/9 Secondary reference Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware |
| 8226-A-0632-16 | 5/9 Secondary reference New Haven Mfg Corp Amatom Electronic Hardware Div |
NSN 5340-01-066-5056 is a Standoff,threaded,spacing, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-066-5056: Width Across Flats: 0.250 INCHES NOMINAL IN; Length: 1.370 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.312 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN. 9 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.