The Chain,silent, cataloged under National Stock Number 3020-00-702-2637, 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 Westinghouse Electric Corp. Government technical data includes 10 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-702-2637 |
| Primary Part Number | 331C132H06REVB |
| Item Name | Chain,silent |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Link Style | SIDE GUIDES |
| Link Nominal Width | 0.2180 INCHES IN |
| Pin Overall Length | 0.2660 INCHES NOMINAL IN |
| Effective Length | 1.5312 FEET NOMINAL FT |
| Nominal Pitch Distance | 0.188 INCHES IN |
| Pin Fastening Method | RIVETED |
| Surface Treatment | PASSIVATE |
| Link Row Quantity | 4 |
| Material | STEEL CORROSION RESISTING |
| Link Nominal Width Between Plates | 0.1500 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 |
|---|---|
| 331C132H06REVB | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 331C132H06REVB | 5/2 Secondary reference U.S. Government activity |
| S1807-98PITCH | 3/9 Design control — primary reference Fmc Corp Link-Belt Div |
NSN 3020-00-702-2637 is a Chain,silent, manufactured by Westinghouse Electric Corp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-702-2637 has 1 manufacturer part number on file: 331C132H06REVB (Westinghouse Electric Corp).
Key specifications for 331C132H06REVB: Link Style: SIDE GUIDES; Link Nominal Width: 0.2180 INCHES IN; Pin Overall Length: 0.2660 INCHES NOMINAL IN; Effective Length: 1.5312 FEET NOMINAL FT. 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.