The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-516-5431, 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 21 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-516-5431 |
| Primary Part Number | 752-6405297-53 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Length | 5.600 INCHES NOMINAL IN |
| Cross-Sectional Width | 2.000 INCHES NOMINAL IN |
| Thread Length | 1.310 INCHES NOMINAL RIGHT INTERNAL IN |
| Thread Length | 2.880 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Style Designator | LEFT INTERNAL AND RIGHT INTERNAL THREADS |
| Thread Pitch Diameters | +0.1009 TO 0.1052 INCHES RIGHT INTERNAL IN |
| Thread Pitch Diameters | +0.2175 TO 0.2248 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Material Document and Classification | DOD-F-24669/1 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Length | 5.600 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Direction | RIGHT-HAND RIGHT INTERNAL |
| Nominal Thread Size | 0.250 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Nominal Thread Size | 0.125 INCHES RIGHT INTERNAL IN |
| Cross-Sectional Shape | ELLIPTICAL |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Class | 2B RIGHT INTERNAL |
| Thread Quantity Per Inch | 20 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 27 RIGHT INTERNAL |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Series Designator | UNF RIGHT INTERNAL |
| 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 |
|---|---|
| 752-6405297-53 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5340-01-516-5431 is a Standoff,threaded,spacing, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-516-5431 has 1 manufacturer part number on file: 752-6405297-53 (Naval Sea Systems Command).
Key specifications for 752-6405297-53: Length: 5.600 INCHES NOMINAL IN; Cross-Sectional Width: 2.000 INCHES NOMINAL IN; Thread Length: 1.310 INCHES NOMINAL RIGHT INTERNAL IN; Thread Length: 2.880 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN. 21 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.