The Spring Block, cataloged under National Stock Number 1386-01-663-4335, is classified within Federal Supply Class 1386 (Underwater Use Explosive Ordnance Disposal and Swimmer Weapons Systems Tools and Equipment) of the Ammunition and Explosives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Spring Block |
| FSC / FSG | 1386 — Underwater Use Explosive Ordnance Disposal and Swimmer Weapons Systems Tools and Equipment (FSG 13) |
| Manufacturers | Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 1386-01-663-4335 |
| Primary Part Number | 1113-012ED |
| Item Name | Spring Block |
| FSC / FSG | 1386 / 13 — Underwater Use Explosive Ordnance Disposal and Swimmer Weapons Systems Tools and Equipment |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 1113-012ED | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 1113-012 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1386-01-663-4335 is a Spring Block, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 1386, Underwater Use Explosive Ordnance Disposal and Swimmer Weapons Systems Tools and Equipment. Status: active.
NSN 1386-01-663-4335 has 1 manufacturer part number on file: 1113-012ED (Naval Inventory Control Point Mechanicsburg).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1386-01-663-4335 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.