The Spring,helical,compression, cataloged under National Stock Number 5360-01-421-8337, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Smalley Steel Ring Co.. Government technical data includes 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-421-8337 |
| Primary Part Number | 420372 |
| Item Name | Spring,helical,compression |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Smalley Steel Ring Co. |
| Status | ACTIVE |
| Material Document and Classification | SAE 1070-1090 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Material | STEEL 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 |
|---|---|
| 420372 PRIMARY | Smalley Steel Ring Co. (USA) |
| 420372 ITEM 22 | Smalley Steel Ring Co. (USA) |
| SSR-0112-S17 | Smalley Steel Ring Co. (USA) |
| Reference | Meaning |
|---|---|
| 420372 | 3/9 Design control — primary reference Tyco Fire Products Lp |
| SSR-0112-S17 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 420378 ITEM 22 | 5/9 Secondary reference Tyco Fire Products Lp |
NSN 5360-01-421-8337 is a Spring,helical,compression, manufactured by Smalley Steel Ring Co., classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-421-8337 has 3 manufacturer part numbers on file: 420372 (Smalley Steel Ring Co.), 420372 ITEM 22 (Smalley Steel Ring Co.), SSR-0112-S17 (Smalley Steel Ring Co.).
Key specifications for 420372: Material Document and Classification: SAE 1070-1090 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL OVERALL. 2 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.