The Rope,fibrous, cataloged under National Stock Number 4020-00-231-2541, is classified within Federal Supply Class 4020 (Fiber Rope, Cordage, and Twine) of the Rope, Cable, Chain, and Fittings group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4020-00-231-2541 |
| Item Name | Rope,fibrous |
| FSC / FSG | 4020 / 40 — Fiber Rope, Cordage, and Twine |
| Status | ACTIVE |
| Length | 400.000 YARDS MINIMUM |
| Strand Quantity | 3 |
| Circumference | 1.500 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | 1 TYPE AND 2 CLASS |
| Physical Form | COIL |
| Color | NATURAL |
| Environmental Protection | MILDEW RESISTANT |
| Unable to Decode | UNABLE TO DECODE |
| Material | COPPER-8-QUINOLINOLATE IMPREGNATION |
| Material | JUTE OR SISAL OR COTTON OR MANILA OVERALL |
| Fabrication Method | TWISTED |
| Breaking Strength | 720.0 HARNESS GROUP 2 |
| Length Per Ten Turns | 16.125 INCHES MINIMUM AND 17.750 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MILR1670 | 5/9 Secondary reference U.S. Government activity |
| A-A-500057 | 5/9 Secondary reference U.S. Government activity |
| A-A-50057 | 4/1 Identification reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
NSN 4020-00-231-2541 is a Rope,fibrous, classified under FSC 4020, Fiber Rope, Cordage, and Twine. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4020-00-238-7726, 4020-00-238-7727. Verify interchangeability with system specifications before substitution.
Key specifications for 4020-00-231-2541: Length: 400.000 YARDS MINIMUM; Strand Quantity: 3; Circumference: 1.500 INCHES NOMINAL IN; Nondefinitive Spec/std Data: 1 TYPE AND 2 CLASS. 13 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.