The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-795-5489, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 13 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-795-5489 |
| Primary Part Number | 71781 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — No Item Name Available |
| Manufacturer | Triumph Engine Control Systems Llc |
| Status | ACTIVE |
| Distance From End to First Step | 0.2490 INCHES MINIMUM AND 0.2590 INCHES MAXIMUM IN |
| Material | STEEL |
| Bore Taper in Deg | 32.0 |
| Counterbore Diameter | 0.3400 INCHES MINIMUM AND 0.3500 INCHES MAXIMUM IN |
| Material Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM |
| End Diameter | 0.2100 INCHES MINIMUM AND 0.2300 INCHES MAXIMUM IN |
| First Step Diameter | 0.6300 INCHES NOMINAL IN |
| Style Designator | SEAT |
| Bore Diameter | 0.3400 INCHES MINIMUM AND 0.3500 INCHES MAXIMUM IN |
| Spherical Seat Top Radius | 0.1200 INCHES NOMINAL IN |
| FSC Application Data | FUEL CONTROL,MAIN,TURBINE ENGINE |
| Design Type | SOLID |
| Counterbore Length | 0.1480 INCHES MINIMUM AND 0.1680 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 71781 PRIMARY | Triumph Engine Control Systems Llc (USA) |
NSN 5340-00-795-5489 is a Seat,helical Compression Spring, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5340 (No Item Name Available). Status: active.
NSN 5340-00-795-5489 has 1 cross-referenced part number: 71781 (Triumph Engine Control Systems Llc).
There are 2 known substitutes for 5340-00-795-5489: 3110-00-175-2549, 5331-01-205-9805. Verify interchangeability with system specifications before substitution.
Key specifications for 71781: Special Features: MATL-STEEL AMS 5612;NOT CASEHARDENED; Distance From End to First Step: 0.2490 INCHES MINIMUM AND 0.2590 INCHES MAXIMUM IN; Material: STEEL; Bore Taper in Deg: 32.0. 15 total characteristics are documented in the Federal Logistics Information System.