The Nut,union, cataloged under National Stock Number 4730-01-437-5299, 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 Pre-Mach Inc. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-437-5299 |
| Primary Part Number | 524433-3 |
| Item Name | Nut,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Pre-Mach Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 524433-3 | Pre-Mach Inc (USA) |
| 524433-3 | Nassau Tool Works, Inc (USA) |
| 524433-3 | Costa Precision Manufacturing Corp (USA) |
| 524433-3 | Airtronics, Llc (USA) |
| 524433-3 | Duhadaway Tool & Die Shop Inc (USA) |
| 524433-3 | Krobach Mfg. Corp. Dba Krobach Manufacturing Corp (USA) |
| Reference | Meaning |
|---|---|
| 524433-3 | 3/2 Design control — primary reference U.S. Government activity |
| 524433-3 | 5/9 Secondary reference Bay City Shovels, Inc |
| 524433-3 | 5/9 Secondary reference Computa-Base-Machining, Inc. |
| 524433-3 | 5/9 Secondary reference Preci-Manufacturing, Incorporated |
| 524433-3 | 5/9 Secondary reference Master Research & Manufacturing, Inc. Dba Master Research & Manufacturing Inc |
| 524433-3 | 5/9 Secondary reference Nuflo, Inc. |
NSN 4730-01-437-5299 is a Nut,union, manufactured by Pre-Mach Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-437-5299 has 6 manufacturer part numbers on file: 524433-3 (Pre-Mach Inc), 524433-3 (Nassau Tool Works, Inc), 524433-3 (Costa Precision Manufacturing Corp), 524433-3 (Airtronics, Llc), 524433-3 (Duhadaway Tool & Die Shop Inc) and 1 more.
Key specifications for 524433-3: End Item Identification: PREPROVISIONING SUPPORT NAVICP IS POE. 0 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.