The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-618-6644, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Thorlabs, Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-618-6644 |
| Primary Part Number | TR3 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — No Item Name Available |
| Manufacturer | Thorlabs, Inc |
| Status | ACTIVE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) RIGHT INTERNAL |
| Thread Direction | RIGHT-HAND RIGHT INTERNAL |
| Style Designator | LEFT INTERNAL AND RIGHT INTERNAL THREADS |
| Nominal Thread Size | 0.25 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Length | 0.34 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Length | 3.00 INCHES NOMINAL IN |
| Cross-Sectional Shape | ROUND |
| Nominal Thread Size | 0.1640 INCHES RIGHT INTERNAL IN |
| Diameter | 0.50 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| TR3 PRIMARY | Thorlabs, Inc (USA) |
NSN 5340-01-618-6644 is a Standoff,threaded,spacing, manufactured by Thorlabs, Inc, classified under FSC 5340 (No Item Name Available). Status: active.
NSN 5340-01-618-6644 has 1 cross-referenced part number: TR3 (Thorlabs, Inc).
There are 10 known substitutes for 5340-01-618-6644: 3120-00-453-6221, 3110-00-516-5413, 3120-00-780-9567 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for TR3: Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD); Special Features: 1/2 IN-8-32 SET SCREW INCLUDED FOR RIGHT SIDE INTERNAL. IN; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) RIGHT INTERNAL; Thread Direction: RIGHT-HAND RIGHT INTERNAL. 14 total characteristics are documented in the Federal Logistics Information System.