The Standoff,threaded,spacing, cataloged under National Stock Number 5340-00-135-5528, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Corp Electronic Systems Defensive System Div. 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 | 5340-00-135-5528 |
| Primary Part Number | ST5H066-2CP |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Corp Electronic Systems Defensive System Div |
| Status | ACTIVE |
| Flange Width Across Flats | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Length | 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN |
| Flange Thickness | 0.175 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Style Designator | FLANGED WITH LEFT INTERNAL THREAD |
| Material Document and Classification | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE STANDOFF |
| Thread Direction | RIGHT-HAND RIGHT EXTERNAL |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Nominal Thread Size | 0.086 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Nominal Thread Size | 0.086 INCHES RIGHT EXTERNAL IN |
| Surface Treatment | PASSIVATE STANDOFF |
| Thread Class | 2A RIGHT EXTERNAL A |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 56 RIGHT EXTERNAL |
| Thread Quantity Per Inch | 56 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Material | STEEL COMP 303 OR STEEL COMP 303SE 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 |
|---|---|
| ST5H066-2CP PRIMARY | Northrop Grumman Corp Electronic Systems Defensive System Div (USA) |
NSN 5340-00-135-5528 is a Standoff,threaded,spacing, manufactured by Northrop Grumman Corp Electronic Systems Defensive System Div, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-135-5528 has 1 manufacturer part number on file: ST5H066-2CP (Northrop Grumman Corp Electronic Systems Defensive System Div).
Key specifications for ST5H066-2CP: Flange Width Across Flats: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN; Length: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN; Flange Thickness: 0.175 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN; Style Designator: FLANGED WITH LEFT INTERNAL THREAD. 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.