The Spring,helical,extension, cataloged under National Stock Number 5360-00-105-4344, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Mason Electric Co. Dba Mason Controls. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-105-4344 |
| Primary Part Number | PM21837 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — No Item Name Available |
| Manufacturer | Mason Electric Co. Dba Mason Controls |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.195 INCHES NOMINAL IN |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Inside Diameter | 0.147 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Surface Treatment | CADMIUM OVERALL |
| Spring Free Length | 0.818 INCHES NOMINAL IN |
| Design Type | OPEN |
| Coil Quantity | 12 |
| End Style | FULL LOOP BOTH ENDS |
| Hook Radius | 0.073 INCHES NOMINAL BOTH ENDS IN |
| Style Designator | CYLINDRICAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5360-00-105-4344 is a Spring,helical,extension, manufactured by Mason Electric Co. Dba Mason Controls, classified under FSC 5360 (No Item Name Available). Status: active.
NSN 5360-00-105-4344 has 4 cross-referenced part numbers: 21837 (Unison Industries Llc), 21837 (Amphenol Corp Div Amphenol Aerospace Operations), PM21837 (Unison Industries Llc), PM21837 (Mason Electric Co. Dba Mason Controls).
There are 4 known substitutes for 5360-00-105-4344: 5970-00-353-7172, 3020-00-463-3111, 2990-01-165-8292 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for PM21837: Spring Free Outside Diameter: 0.195 INCHES NOMINAL IN; Coil Helix Direction: RIGHT-HAND OR LEFT-HAND; Inside Diameter: 0.147 INCHES NOMINAL IN; Material: STEEL OVERALL. 11 total characteristics are documented in the Federal Logistics Information System.