The Connecting Link,rigid, cataloged under National Stock Number 3040-00-316-4589, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Middleby Marshall Inc Conveyor Ovens and Mixers Div. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-316-4589 |
| Primary Part Number | B640 |
| Item Name | Connecting Link,rigid |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Middleby Marshall Inc Conveyor Ovens and Mixers Div |
| Status | ACTIVE |
| 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 |
|---|---|
| C645PCM550 | Middleby Marshall Inc Conveyor Ovens and Mixers Div (USA) |
| B640 PRIMARY | Middleby Marshall Inc Conveyor Ovens and Mixers Div (USA) |
| B186PCM550 | Middleby Marshall Inc Conveyor Ovens and Mixers Div (USA) |
| B640PCM550 | Middleby Marshall Inc Conveyor Ovens and Mixers Div (USA) |
| Reference | Meaning |
|---|---|
| M550 | 5/9 Secondary reference Champion Machinery Co |
NSN 3040-00-316-4589 is a Connecting Link,rigid, manufactured by Middleby Marshall Inc Conveyor Ovens and Mixers Div, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-316-4589 has 4 manufacturer part numbers on file: C645PCM550 (Middleby Marshall Inc Conveyor Ovens and Mixers Div), B640 (Middleby Marshall Inc Conveyor Ovens and Mixers Div), B186PCM550 (Middleby Marshall Inc Conveyor Ovens and Mixers Div), B640PCM550 (Middleby Marshall Inc Conveyor Ovens and Mixers Div).
4 possible matches (shared part number, not a government interchangeability claim): 1670-01-416-6961, 7025-01-487-8134, 2920-01-595-2140. Verify interchangeability with system specifications before substitution.
Key specifications for B640: Overall Length: 11.000 INCHES NOMINAL IN; Special Features: 0.500 IN. DIA HOLE ONE END,0.438 IN.-14 @UNC THD HOLE OTHER END IN; Material: STEEL. 1 specification is 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.