The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-426-5396, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 22 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 | 5340-01-426-5396 |
| Primary Part Number | G398-29 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Right Counterbore Diameter | 0.171 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN |
| Left Counterbore Depth | 0.094 INCHES NOMINAL IN |
| Length | 3.620 INCHES MINIMUM AND 3.630 INCHES MAXIMUM IN |
| Thread Length | 0.375 INCHES NOMINAL RIGHT INTERNAL IN |
| Thread Length | 0.375 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Style Designator | LEFT INTERNAL AND RIGHT INTERNAL THREADS |
| Material Document and Classification | QQ-A-200/3 T4 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/5 T4 FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| Diameter | 0.250 INCHES NOMINAL IN |
| Right Counterbore Depth | 0.094 INCHES NOMINAL IN |
| Left Counterbore Diameter | 0.171 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Direction | RIGHT-HAND RIGHT INTERNAL |
| Nominal Thread Size | 0.138 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Nominal Thread Size | 0.138 INCHES RIGHT INTERNAL IN |
| Cross-Sectional Shape | ROUND |
| Thread Class | 3B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Class | 3B RIGHT INTERNAL |
| Thread Quantity Per Inch | 32 RIGHT INTERNAL |
| Thread Quantity Per Inch | 32 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Material | ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 2017 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) 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 |
|---|---|
| G398-29 PRIMARY | Northrop Grumman Systems Corporation (USA) |
NSN 5340-01-426-5396 is a Standoff,threaded,spacing, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-426-5396 has 1 manufacturer part number on file: G398-29 (Northrop Grumman Systems Corporation).
Key specifications for G398-29: Right Counterbore Diameter: 0.171 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN; Left Counterbore Depth: 0.094 INCHES NOMINAL IN; Length: 3.620 INCHES MINIMUM AND 3.630 INCHES MAXIMUM IN; Thread Length: 0.375 INCHES NOMINAL RIGHT INTERNAL IN. 22 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.