The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-307-9735, 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 17 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 | 5340-01-307-9735 |
| Primary Part Number | 5856521 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flange Width Across Flats | 0.250 INCHES NOMINAL IN |
| Length | 1.006 INCHES NOMINAL IN |
| Flange Thickness | 0.250 INCHES NOMINAL IN |
| Thread Length | 0.280 INCHES NOMINAL RIGHT EXTERNAL IN |
| Thread Length | 0.344 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Style Designator | FLANGED WITH LEFT INTERNAL THREAD |
| Thread Direction | RIGHT-HAND RIGHT EXTERNAL |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Nominal Thread Size | 0.138 INCHES RIGHT EXTERNAL IN |
| Nominal Thread Size | 0.138 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Thread Class | 2A LEFT INTERNAL (INCLUDES THRU THREAD) A |
| Thread Class | 2B RIGHT EXTERNAL |
| Thread Quantity Per Inch | 32 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 32 RIGHT EXTERNAL |
| Material | STEEL COMP 303 STANDOFF |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) RIGHT EXTERNAL |
| 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 |
|---|---|
| 5856521 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5340-01-307-9735 is a Standoff,threaded,spacing, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-307-9735 has 1 manufacturer part number on file: 5856521 (Naval Sea Systems Command).
Key specifications for 5856521: Flange Width Across Flats: 0.250 INCHES NOMINAL IN; Length: 1.006 INCHES NOMINAL IN; Flange Thickness: 0.250 INCHES NOMINAL IN; Thread Length: 0.280 INCHES NOMINAL RIGHT EXTERNAL IN. 17 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.