The Spring,helical,extension, cataloged under National Stock Number 5360-00-597-2191, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Optical Technology Devices 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-597-2191 |
| Primary Part Number | 21637 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — No Item Name Available |
| Manufacturer | Optical Technology Devices Inc |
| Status | ACTIVE |
| Hook Radius | 0.127 INCHES NOMINAL BOTH ENDS IN |
| Opening Width | 0.062 INCHES NOMINAL BOTH ENDS IN |
| Material | STEEL OVERALL |
| Spring Free Length | 0.870 INCHES NOMINAL IN |
| End Style | MACHINED HALF LOOP BOTH ENDS |
| Coil Quantity | 22 |
| Style Designator | CYLINDRICAL |
| Design Type | CLOSED |
| Material Document and Classification | QQ-W-423,FORM 1,COND B FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Inside Diameter | 0.178 INCHES NOMINAL IN |
| Coil Helix Direction | RIGHT-HAND |
| Spring Free Outside Diameter | 0.214 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 21637 | Optical Technology Devices Inc (USA) |
NSN 5360-00-597-2191 is a Spring,helical,extension, manufactured by Optical Technology Devices Inc, classified under FSC 5360 (No Item Name Available). Status: active.
NSN 5360-00-597-2191 has 1 cross-referenced part number: 21637 (Optical Technology Devices Inc).
There are 4 known substitutes for 5360-00-597-2191: 5950-00-019-1504, 2520-00-759-4741, 5915-01-329-7862 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 21637: Hook Radius: 0.127 INCHES NOMINAL BOTH ENDS IN; Opening Width: 0.062 INCHES NOMINAL BOTH ENDS IN; Material: STEEL OVERALL; Spring Free Length: 0.870 INCHES NOMINAL IN. 12 total characteristics are documented in the Federal Logistics Information System.