The Screen,gyratory Foundry Riddle, cataloged under National Stock Number 3680-01-281-0236, is classified within Federal Supply Class 3680 (Foundry Machinery, Related Equipment and Supplies) of the Special Industry Machinery group. The manufacturer of record is Mcenglevan Industrial Furnace Manufacturing, Inc. 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3680-01-281-0236 |
| Primary Part Number | 031687 |
| Item Name | Screen,gyratory Foundry Riddle |
| FSC / FSG | 3680 / 36 — Foundry Machinery, Related Equipment and Supplies |
| Manufacturer | Mcenglevan Industrial Furnace Manufacturing, Inc |
| Status | ACTIVE |
| General Characteristics Item Description | GALVANIZED; 24 IN. DIA; NO. 5 MESH; 20 GAUGE IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 031687 PRIMARY | Mcenglevan Industrial Furnace Manufacturing, Inc (USA) |
NSN 3680-01-281-0236 is a Screen,gyratory Foundry Riddle, manufactured by Mcenglevan Industrial Furnace Manufacturing, Inc, classified under FSC 3680, Foundry Machinery, Related Equipment and Supplies. Status: active.
NSN 3680-01-281-0236 has 1 manufacturer part number on file: 031687 (Mcenglevan Industrial Furnace Manufacturing, Inc).
1 possible match (shared part number, not a government interchangeability claim): 6540-01-513-1802. Verify interchangeability with system specifications before substitution.
Key specifications for 031687: General Characteristics Item Description: GALVANIZED; 24 IN. DIA; NO. 5 MESH; 20 GAUGE IN; End Item Identification: VR240 GYRATORY FOUNDRY RIDDLE P/N 030770. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.