The Block,centering,tai, cataloged under National Stock Number 4940-01-178-0630, is classified within Federal Supply Class 4940 (Miscellaneous Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Jpw Industries Inc. Dba Jpw Industries Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Block,centering,tai |
| FSC / FSG | 4940 — Miscellaneous Maintenance and Repair Shop Specialized Equipment (FSG 49) |
| Manufacturers | Jpw Industries Inc. Dba Jpw Industries Inc (CAGE 3ZFY8) |
| Parameter | Value |
|---|---|
| NSN | 4940-01-178-0630 |
| Primary Part Number | 11-3B |
| Item Name | Block,centering,tai |
| FSC / FSG | 4940 / 49 — Miscellaneous Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Jpw Industries Inc. Dba Jpw Industries Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 11-3B PRIMARY | Jpw Industries Inc. Dba Jpw Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 11-3B | 3/9 Design control — primary reference Jet Equipment & Tools Inc |
NSN 4940-01-178-0630 is a Block,centering,tai, manufactured by Jpw Industries Inc. Dba Jpw Industries Inc, classified under FSC 4940, Miscellaneous Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4940-01-178-0630 has 1 manufacturer part number on file: 11-3B (Jpw Industries Inc. Dba Jpw Industries Inc).
1 possible match (shared part number, not a government interchangeability claim): 2540-01-202-8560. Verify interchangeability with system specifications before substitution.
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.