The Standoff,threaded,spacing, cataloged under National Stock Number 5340-00-680-6340, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Kleinschmidt Inc. Government technical data includes 15 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-680-6340 |
| Primary Part Number | 55921 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — No Item Name Available |
| Manufacturer | Kleinschmidt Inc |
| Status | ACTIVE |
| Flange Width Across Flats | 0.312 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND RIGHT EXTERNAL |
| Flange Thickness | 1.109 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 40 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Length | 0.469 INCHES NOMINAL RIGHT EXTERNAL IN |
| Thread Class | 2A RIGHT EXTERNAL A |
| Thread Length | 0.375 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Length | 1.578 INCHES NOMINAL IN |
| Thread Series Designator | UNF LEFT INTERNAL (INCLUDES THRU THREAD) |
| Surface Treatment | COPPER STANDOFF |
| Style Designator | FLANGED WITH LEFT INTERNAL THREAD |
| Nominal Thread Size | 0.138 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Material | COPPER ALLOY STANDOFF |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 55921 | Kleinschmidt Inc (USA) |
NSN 5340-00-680-6340 is a Standoff,threaded,spacing, manufactured by Kleinschmidt Inc, classified under FSC 5340 (No Item Name Available). Status: active.
NSN 5340-00-680-6340 has 1 cross-referenced part number: 55921 (Kleinschmidt Inc).
There is 1 known substitute for 5340-00-680-6340: 5935-00-153-4366. Verify interchangeability with system specifications before substitution.
Key specifications for 55921: Flange Width Across Flats: 0.312 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND RIGHT EXTERNAL; Flange Thickness: 1.109 INCHES NOMINAL IN; Thread Quantity Per Inch: 40 LEFT INTERNAL (INCLUDES THRU THREAD). 15 total characteristics are documented in the Federal Logistics Information System.