The Chain,roller, cataloged under National Stock Number 3020-00-231-8686, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-231-8686 |
| Primary Part Number | 237043PC6 |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| FSC Application Data | 1. 5 IN. PROJECTILE HOIST MK 4 IN |
| First Chain Link Roller Nominal Diameter | 0.6240 INCHES IN |
| Effective Length | 37.2500 FEET NOMINAL FT |
| First Chain Link Pin Nominal Diameter | 0.3125 INCHES IN |
| Nominal Pitch Distance | 1.500 INCHES IN |
| First Chain Link Plate Width | 0.938 INCHES NOMINAL IN |
| First Chain Link Plate Width at Pin End | 0.938 INCHES NOMINAL IN |
| Minimum Tensile Strength | 10000 POUNDS PER SQUARE INCH LBS |
| First Chain Link Nominal Width Between Plates | 0.4470 INCHES IN |
| Material | STEEL |
| 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 |
|---|---|
| 224820PC2 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 237043PC6 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| MILC16906 | 4/1 Identification reference U.S. Government activity |
NSN 3020-00-231-8686 is a Chain,roller, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-231-8686 has 2 manufacturer part numbers on file: 224820PC2 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 237043PC6 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
3 possible matches (shared part number, not a government interchangeability claim): 3020-00-231-8687, 3020-00-294-4699, 3020-00-727-9129. Verify interchangeability with system specifications before substitution.
Key specifications for 237043PC6: FSC Application Data: 1. 5 IN. PROJECTILE HOIST MK 4 IN; First Chain Link Roller Nominal Diameter: 0.6240 INCHES IN; Effective Length: 37.2500 FEET NOMINAL FT; First Chain Link Pin Nominal Diameter: 0.3125 INCHES IN. 10 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.