The Spring,return,brake, cataloged under National Stock Number 5360-00-591-7838, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Meritor Industrial Products, Llc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-591-7838 |
| Primary Part Number | 1718Q121 |
| Item Name | Spring,return,brake |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Meritor Industrial Products, Llc |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,0.344 IN. OD OF MATERIAL,5.250 IN. ACROSS OPEN END OF SPRING,7.250 IN. ACROSS CLOSED END OF SPRING,@8.750 IN. LG OF SPRING IN BENT POSITION 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 |
|---|---|
| 1718Q121 PRIMARY | Meritor Industrial Products, Llc (USA) |
| Reference | Meaning |
|---|---|
| 309579 | 5/9 Secondary reference Yale Security Inc. Dba Norton Door Control |
| SMP12-372 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 1718Q121 | 5/9 Secondary reference Meritor Heavy Vehicle Systems, Llc |
| 1718Q1211 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 50750-49 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 1718-Q-121 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 1718Q121 | 5/9 Secondary reference T and J Industries Inc |
NSN 5360-00-591-7838 is a Spring,return,brake, manufactured by Meritor Industrial Products, Llc, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-591-7838 has 1 manufacturer part number on file: 1718Q121 (Meritor Industrial Products, Llc).
Key specifications for 1718Q121: General Characteristics Item Description: STEEL,0.344 IN. OD OF MATERIAL,5.250 IN. ACROSS OPEN END OF SPRING,7.250 IN. ACROSS CLOSED END OF SPRING,@8.750 IN. LG OF SPRING IN BENT POSITION IN. 1 specification is 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.