The Spring,helical,extension, cataloged under National Stock Number 5360-01-183-1668, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-183-1668 |
| Primary Part Number | 11677629 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.474 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-Z-325,TYPE 3,CLASS 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416,TYPE 2,CLASS 2 FED SPEC 2ND TREATMENT RESPONSE OR TT-P-636 FED SPEC 3RD TREATMENT RESPONSE OVERALL |
| End Style | SHORT TWISTED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | QQ-W-428,TYPE 1 OR 2 /D/ FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 2.344 INCHES NOMINAL IN |
| Coil to Hook Inside Length | 0.380 INCHES NOMINAL BOTH ENDS IN |
| Inside Diameter | 0.380 INCHES NOMINAL IN |
| Coil Quantity | 30 |
| Surface Treatment | ZINC OR CADMIUM AND CHROMATE OR PRIMER OR ENAMEL OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL OVERALL |
| Hook Radius | 0.190 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 |
|---|---|
| 11677629 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5360-01-183-1668 is a Spring,helical,extension, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-183-1668 has 1 manufacturer part number on file: 11677629 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11677629: Spring Free Outside Diameter: 0.474 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-Z-325,TYPE 3,CLASS 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416,TYPE 2,CLASS 2 FED SPEC 2ND TREATMENT RESPONSE OR TT-P-636 FED SPEC 3RD TREATMENT RESPONSE OVERALL; End Style: SHORT TWISTED HOOK BOTH ENDS; Design Type: CLOSED. 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.