The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-493-8901, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-493-8901 |
| Primary Part Number | 151-7066457-34 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 0.625 INCHES NOMINAL IN |
| Length | 2.310 INCHES NOMINAL IN |
| Thread Length | 2.310 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Style Designator | INTERNALLY THREADED FULL LENGTH |
| Material Document and Classification | QQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | LEFT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Nominal Thread Size | 0.500 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Cross-Sectional Shape | OCTAGON |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 20 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Material | NICKEL ALLOY 400 OVERALL |
| Thread Series Designator | UNF 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 |
|---|---|
| 151-7066457-34 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H462-0411-34 | 5/2 Secondary reference U.S. Government activity |
NSN 5340-01-493-8901 is a Standoff,threaded,spacing, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-493-8901 has 1 manufacturer part number on file: 151-7066457-34 (Naval Sea Systems Command).
Key specifications for 151-7066457-34: Width Across Flats: 0.625 INCHES NOMINAL IN; Length: 2.310 INCHES NOMINAL IN; Thread Length: 2.310 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN; Style Designator: INTERNALLY THREADED FULL LENGTH. 12 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.