The Spring,helical,torsion, cataloged under National Stock Number 5360-01-077-4403, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Pti Technologies Inc.. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-077-4403 |
| Primary Part Number | 4-569-23 |
| Item Name | Spring,helical,torsion |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Pti Technologies Inc. |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.197 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| End Style | ONE HOOK END OVERALL |
| End Length | 0.700 INCHES NOMINAL BOTH ENDS IN |
| Style Designator | SINGLE TORSION LEFT HAND |
| Material Document and Classification | QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Inside Diameter | 0.145 INCHES NOMINAL IN |
| Coil Quantity | 15 |
| Surface Treatment | PASSIVATE OVERALL |
| Coil Helix Direction | RIGHT-HAND |
| Material | STEEL COMP 302 OVERALL |
| End Angular Relationship | ENDS ANGLED ONE TO OTHER |
| 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 |
|---|---|
| 4-569-23 PRIMARY | Pti Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 4-569-23 | 5/9 Secondary reference Vacco Industries |
| 4-569-23 | C/1 Advisory reference — outside the item-of-supply concept Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator |
NSN 5360-01-077-4403 is a Spring,helical,torsion, manufactured by Pti Technologies Inc., classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-077-4403 has 1 manufacturer part number on file: 4-569-23 (Pti Technologies Inc.).
Key specifications for 4-569-23: Spring Free Outside Diameter: 0.197 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; End Style: ONE HOOK END OVERALL; End Length: 0.700 INCHES NOMINAL BOTH ENDS IN. 12 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.