The Standoff,threaded,spacing, cataloged under National Stock Number 5340-00-844-7839, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-844-7839 |
| Primary Part Number | 1102521PC3 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Flange Diameter | 0.250 INCHES NOMINAL IN |
| Length | 2.530 INCHES MINIMUM AND 2.560 INCHES MAXIMUM IN |
| Flange Thickness | 2.290 INCHES MINIMUM AND 2.300 INCHES MAXIMUM IN |
| Thread Length | 0.310 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Thread Length | 0.250 INCHES NOMINAL RIGHT EXTERNAL 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 | 0.112 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Surface Treatment | PASSIVATE STANDOFF |
| Thread Class | 2A RIGHT EXTERNAL A |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 40 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 32 RIGHT EXTERNAL |
| Material | STEEL COMP 416 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 |
|---|---|
| 1102521 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 1102521PC3 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 5340-00-844-7839 is a Standoff,threaded,spacing, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-844-7839 has 2 manufacturer part numbers on file: 1102521 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 1102521PC3 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 1102521PC3: Flange Diameter: 0.250 INCHES NOMINAL IN; Length: 2.530 INCHES MINIMUM AND 2.560 INCHES MAXIMUM IN; Flange Thickness: 2.290 INCHES MINIMUM AND 2.300 INCHES MAXIMUM IN; Thread Length: 0.310 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN. 18 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.