The Chain,roller, cataloged under National Stock Number 3020-01-446-9977, 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 Emerson Electric Co Browning Mfg Div. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-446-9977 |
| Primary Part Number | NO.41 84 PITCHES |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Emerson Electric Co Browning Mfg Div |
| Status | ACTIVE |
| Second Chain Link Pin Nominal Diameter | 0.1410 INCHES IN |
| Second Chain Link Plate Nominal Thickness | 0.0500 INCHES IN |
| First Chain Link Roller Nominal Diameter | 0.3060 INCHES IN |
| Pin Overall Length | 0.6500 INCHES NOMINAL IN |
| Second Chain Link Style | PIN |
| Effective Length | 42.0000 INCHES NOMINAL IN |
| Second Chain Link Nominal Width Between Plates | 0.3500 INCHES IN |
| First Chain Link Style | ROLLER |
| Nominal Pitch Distance | 0.5000 INCHES IN |
| First Chain Link Plate Width | 0.3830 INCHES NOMINAL IN |
| Pin Fastening Method | COTTER PIN |
| Second Chain Link Plate Width | 0.3100 INCHES NOMINAL IN |
| Minimum Tensile Strength | 1500 POUNDS PER SQUARE INCH LBS |
| First Chain Link Nominal Width Between Plates | 0.2500 INCHES IN |
| Link Row Quantity | 1 |
| Material | STEEL |
| First Chain Link Plate Nominal Thickness | 0.0500 INCHES 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 |
|---|---|
| NO.41 84 PITCHES PRIMARY | Emerson Electric Co Browning Mfg Div (USA) |
| NO.41 84 PITCHES PRIMARY | Union Chain Div of Ust Inc (USA) |
| 9001-05 PRIMARY | Insinger Machine Co (USA) |
| NO.41 84 PITCHES PRIMARY | Diamond Chain Co Div of Amsted Industries Inc (USA) |
| NO.41 84 PITCHES | Jeffrey Chain L.p. (USA) |
| Reference | Meaning |
|---|---|
| NO.41 84 PITCHES | 5/9 Secondary reference Emerson Power Transmission Corporation Div Ept |
| ASA41 84 PITCHES | 5/2 Secondary reference U.S. Government activity |
NSN 3020-01-446-9977 is a Chain,roller, manufactured by Emerson Electric Co Browning Mfg Div, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-446-9977 has 5 manufacturer part numbers on file: NO.41 84 PITCHES (Emerson Electric Co Browning Mfg Div), NO.41 84 PITCHES (Union Chain Div of Ust Inc), 9001-05 (Insinger Machine Co), NO.41 84 PITCHES (Diamond Chain Co Div of Amsted Industries Inc), NO.41 84 PITCHES (Jeffrey Chain L.p.).
1 possible match (shared part number, not a government interchangeability claim): 5985-01-601-8685. Verify interchangeability with system specifications before substitution.
Key specifications for NO.41 84 PITCHES: Second Chain Link Pin Nominal Diameter: 0.1410 INCHES IN; Second Chain Link Plate Nominal Thickness: 0.0500 INCHES IN; First Chain Link Roller Nominal Diameter: 0.3060 INCHES IN; Pin Overall Length: 0.6500 INCHES NOMINAL IN. 17 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.