The Spring,helical,extension, cataloged under National Stock Number 5360-00-052-5708, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Telemechanics Inc. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-052-5708 |
| Primary Part Number | 180591 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Telemechanics Inc |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.090 INCHES NOMINAL IN |
| Load Rating | 0.50 POUNDS NOMINAL LBS |
| End Style | SHORT TWISTED HOOK BOTH ENDS |
| Design Type | OPEN |
| Style Designator | CYLINDRICAL |
| Spring Free Length | 0.876 INCHES NOMINAL IN |
| Coil to Hook Inside Length | 0.066 INCHES NOMINAL BOTH ENDS IN |
| Inside Diameter | 0.066 INCHES NOMINAL IN |
| Spring Length Under Load | 1.180 INCHES NOMINAL IN |
| Coil Quantity | 58 |
| Surface Treatment | PHOSPHATE OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL OVERALL |
| Hook Radius | 0.033 INCHES NOMINAL BOTH ENDS IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 180591 PRIMARY | Telemechanics Inc (USA) |
| 180591 | Lucent Technologies Inc Corporate Headquarters (USA) |
| 180591 | Data Dynamics Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 180591 | 5/9 Secondary reference American Telephone and Telegraph Co |
| 180591 | 5/9 Secondary reference At and T Teletype Corp |
| 180591 | 5/9 Secondary reference Lucent Technologies Inc Dba Federal Marketing Group |
NSN 5360-00-052-5708 is a Spring,helical,extension, manufactured by Telemechanics Inc, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-052-5708 has 3 manufacturer part numbers on file: 180591 (Telemechanics Inc), 180591 (Lucent Technologies Inc Corporate Headquarters), 180591 (Data Dynamics Ltd).
1 possible match (shared part number, not a government interchangeability claim): 5330-00-578-5014. Verify interchangeability with system specifications before substitution.
Key specifications for 180591: Spring Free Outside Diameter: 0.090 INCHES NOMINAL IN; Load Rating: 0.50 POUNDS NOMINAL LBS; End Style: SHORT TWISTED HOOK BOTH ENDS; Design Type: OPEN. 14 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.