The Spring,helical,extension, cataloged under National Stock Number 5360-01-311-0207, 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 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5360-01-311-0207 |
| Primary Part Number | 12296877-2 |
| 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 | 0.850 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Load Rating | 25.50 POUNDS NOMINAL LBS |
| End Style | SHORT TWISTED HOOK FIRST END |
| End Style | LONG ROUND HOOK SECOND END |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | ASTM A228 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 8.170 INCHES NOMINAL IN |
| Spring Deflection Rate | 6.300 POUNDS PER INCH MINIMUM AND 8.300 POUNDS PER INCH MAXIMUM LBS |
| Coil to Hook Inside Length | 0.640 INCHES NOMINAL FIRST END IN |
| Inside Diameter | 0.680 INCHES NOMINAL IN |
| Spring Length Under Load | 11.620 INCHES NOMINAL IN |
| Coil Quantity | 24 |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL UNS K08500 OVERALL |
| 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 |
|---|---|
| 12296877-2 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 10086978 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5360-01-311-0207 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 5360-01-311-0207 has 1 manufacturer part number on file: 12296877-2 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12296877-2: Spring Free Outside Diameter: 0.850 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Load Rating: 25.50 POUNDS NOMINAL LBS; End Style: SHORT TWISTED HOOK FIRST END. 16 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.