The Adapter,straight,pipe to Boss, cataloged under National Stock Number 4730-01-538-1841, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Tompkins Industries Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-538-1841 |
| Primary Part Number | FF6400-12 |
| Item Name | Adapter,straight,pipe to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Tompkins Industries Inc |
| Status | ACTIVE |
| Connection Type | THREADED INTERNAL BOSS SECOND END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Nominal Thread Size | 1.063 INCHES SECOND END IN |
| Nominal Thread Size | 1.188 INCHES FIRST END IN |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF FIRST END |
| Thread Series Designator | UNF SECOND END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4730-01-538-1841 is a Adapter,straight,pipe to Boss, manufactured by Tompkins Industries Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-538-1841 has 2 manufacturer part numbers on file: FF6400-12 (Tompkins Industries Inc), 1644150 (Crysteel Manufacturing, Inc Dba Crysteel Manufacturing Inc).
Key specifications for FF6400-12: Connection Type: THREADED INTERNAL BOSS SECOND END; Connection Type: THREADED EXTERNAL PIPE FIRST END; Nominal Thread Size: 1.063 INCHES SECOND END IN; Nominal Thread Size: 1.188 INCHES FIRST END IN. 7 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.