The Ring,wearing, cataloged under National Stock Number 4320-01-107-2607, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Barber-Nichols, Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-107-2607 |
| Primary Part Number | BAC-23 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Barber-Nichols, Llc |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Body Style | GROOVED |
| Body Outside Diameter | 3.000 INCHES NOMINAL IN |
| Groove Depth | 0.095 INCHES NOMINAL IN |
| Distance From End to Groove Center | 0.285 INCHES NOMINAL IN |
| Body Inside Diameter | 1.940 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 |
| Material | STEEL |
| Groove Width | 0.190 INCHES NOMINAL IN |
| Hole Diameter | 0.250 INCHES NOMINAL 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 |
|---|---|
| BAC-23 PRIMARY | Barber-Nichols, Llc (USA) |
| Reference | Meaning |
|---|---|
| BAC-23 | C/1 Advisory reference — outside the item-of-supply concept Vard Newport |
NSN 4320-01-107-2607 is a Ring,wearing, manufactured by Barber-Nichols, Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-107-2607 has 1 manufacturer part number on file: BAC-23 (Barber-Nichols, Llc).
1 possible match (shared part number, not a government interchangeability claim): 6145-01-527-1041. Verify interchangeability with system specifications before substitution.
Key specifications for BAC-23: Corner Shape: SQUARE ALL CORNERS; Body Style: GROOVED; Body Outside Diameter: 3.000 INCHES NOMINAL IN; Overall Length: 0.699 INCHES MINIMUM AND 0.701 INCHES MAXIMUM 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.