The Spring,helical,extension, cataloged under National Stock Number 5360-00-322-6161, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Hatch & Kirk, Inc.. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-322-6161 |
| Primary Part Number | 3253849 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Hatch & Kirk, Inc. |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.688 INCHES NOMINAL IN |
| End Style | MACHINE LOOP BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Opening Width | 0.250 INCHES NOMINAL FIRST END IN |
| Opening Width | 0.375 INCHES NOMINAL SECOND END IN |
| Material Document and Classification | SAE 1066 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 5.473 INCHES NOMINAL IN |
| Coil to Hook Inside Length | 0.750 INCHES NOMINAL SECOND END IN |
| Coil to Hook Inside Length | 0.563 INCHES NOMINAL FIRST END IN |
| Inside Diameter | 0.528 INCHES NOMINAL IN |
| Coil Quantity | 23 |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL COMP 1566 OVERALL |
| Hook Radius | 0.250 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 |
|---|---|
| 3253849 PRIMARY | Hatch & Kirk, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3253849 | 5/9 Secondary reference General Motors Corp Electro-Motive Div |
NSN 5360-00-322-6161 is a Spring,helical,extension, manufactured by Hatch & Kirk, Inc., classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-322-6161 has 1 manufacturer part number on file: 3253849 (Hatch & Kirk, Inc.).
Key specifications for 3253849: Spring Free Outside Diameter: 0.688 INCHES NOMINAL IN; End Style: MACHINE LOOP BOTH ENDS; Design Type: CLOSED; Style Designator: CYLINDRICAL. 15 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.