The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-445-4140, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Telephonics Corp. 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 | 5340-01-445-4140 |
| Primary Part Number | 689-1138-001 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Telephonics Corp |
| Status | ACTIVE |
| Length | 0.3200 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.2500 INCHES NOMINAL RIGHT EXTERNAL IN |
| Thread Length | 0.1900 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Style Designator | LEFT INTERNAL AND RIGHT EXTERNAL THREAD |
| Material Document and Classification | ASTM-A-582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.2500 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND RIGHT EXTERNAL |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Nominal Thread Size | 0.1120 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Nominal Thread Size | 0.1120 INCHES RIGHT EXTERNAL IN |
| Cross-Sectional Shape | ROUND |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2B RIGHT EXTERNAL |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 40 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 40 RIGHT EXTERNAL |
| Material | STEEL COMP 303 STANDOFF |
| Right Projection Diameter | 0.1120 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) RIGHT EXTERNAL |
| Right Projection Length | 0.2500 INCHES NOMINAL IN |
| 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 |
|---|---|
| 689-1138-001 PRIMARY | Telephonics Corp (USA) |
NSN 5340-01-445-4140 is a Standoff,threaded,spacing, manufactured by Telephonics Corp, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-445-4140 has 1 manufacturer part number on file: 689-1138-001 (Telephonics Corp).
Key specifications for 689-1138-001: Length: 0.3200 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.2500 INCHES NOMINAL RIGHT EXTERNAL IN; Thread Length: 0.1900 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) 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.