The Coupling,drain,mani, cataloged under National Stock Number 4730-00-489-6256, 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 The Entwistle Company Llc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-489-6256 |
| Primary Part Number | 418424-1 |
| Item Name | Coupling,drain,mani |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Entwistle Company Llc |
| Status | ACTIVE |
| General Characteristics Item Description | ASSEMBLY IS COMPRISED OF: P/N 418424-2, PIPE 2" SCH 160 X 70875 LONG, MATERIAL: STEEL PER MIL-P-24691/1, GRADE B, TYPE E, SEAMLESS PIPE, (QUANTITY 1); P/N 418424-3, BOSS, 1.250" DIAMETER X 1" LONG, MATERIAL: STEEL PER ASTM A108, GRADE 1020/1018 (QUANTITY 2); P/N A316213-8, THREAD PIECE (QUANTITY 1); P/N A316214-8, TAIL PIECE (QUANTITY 1); P/N A41420-8, NUT UNION (QUANTITY 1) |
| Supplementary Features | OUTSIDE DIAMETER OF 2 HOLES: 1.25"; INSIDE DIAMETER OF 2 HOLES: 0.437" |
| Criticality Code Justification | FEAT |
| Specification/standard Data | 05047-ASME Y14.100 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Functional Description | EACH FINISHED WELD SHALL BE 100% MAGNETIC PARTICLE INSPECTED I/A/W ASTM E1444/E1444M PERFORMED BY BOTH CIRCULAR AND LONGITUDINAL METHOD; THE WET PROCESS SHALL BE USED; WELDS SHALL MEET THE CLASS 1 REQUIREMENTS OF MIL-STD-2035 AND BASE METAL SHALL MEET THE REQUIREMENTS OF MIL-STD-2035; EXCEPT NO INDICATIONS GREATER THAN .062" ARE ACCEPTABLE; FINISH SHALL BE 250 (GRADE) UNLESS OTHERWISE SPECIFIED |
| Material | STEEL |
| 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 |
|---|---|
| 418424-1 | The Entwistle Company Llc (USA) |
| 418424-1 | Bec Systems Llc Dba Bec Machine Products (USA) |
| 418424-1 | Deval Life Cycle Support Llc (USA) |
| 418424-1 | Penn State Tool & Die Corp (USA) |
| 418424-1 | Hamill Manufacturing Company Dba Hamill Manufacturing Co (USA) |
| Reference | Meaning |
|---|---|
| 418424-1 | 5/2 Secondary reference U.S. Government activity |
| 418424-1 | 3/2 Design control — primary reference U.S. Government activity |
| 418424-1 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-00-489-6256 is a Coupling,drain,mani, manufactured by The Entwistle Company Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-489-6256 has 5 manufacturer part numbers on file: 418424-1 (The Entwistle Company Llc), 418424-1 (Bec Systems Llc Dba Bec Machine Products), 418424-1 (Deval Life Cycle Support Llc), 418424-1 (Penn State Tool & Die Corp), 418424-1 (Hamill Manufacturing Company Dba Hamill Manufacturing Co).
Key specifications for 418424-1: General Characteristics Item Description: ASSEMBLY IS COMPRISED OF: P/N 418424-2, PIPE 2" SCH 160 X 70875 LONG, MATERIAL: STEEL PER MIL-P-24691/1, GRADE B, TYPE E, SEAMLESS PIPE, (QUANTITY 1); P/N 418424-3, BOSS, 1.250" DIAMETER X 1" LONG, MATERIAL: STEEL PER ASTM A108, GRADE 1020/1018 (QUANTITY 2); P/N A316213-8, THREAD PIECE (QUANTITY 1); P/N A316214-8, TAIL PIECE (QUANTITY 1); P/N A41420-8, NUT UNION (QUANTITY 1); Supplementary Features: OUTSIDE DIAMETER OF 2 HOLES: 1.25"; INSIDE DIAMETER OF 2 HOLES: 0.437"; Criticality Code Justification: FEAT; Overall Length: 10.00 INCHES NOMINAL IN. 6 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.