The Coupling,pipe,slip Joint, cataloged under National Stock Number 4730-00-025-7516, 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 Smith-Blair, Inc. Government technical data includes 8 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-025-7516 |
| Primary Part Number | 525-16600-003 |
| Item Name | Coupling,pipe,slip Joint |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Smith-Blair, Inc |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 1.250 INCHES FIRST END IN |
| Connection Style | CLAMPING W/ GASKET SEAL (PIPE) ALL ENDS |
| Nominal Overall Length | 5.000 INCHES IN |
| Style Designator | COMPRESSION NUT TYPE (DRESSER) |
| Surface Treatment | ZINC OVERALL |
| Material | IRON BODY |
| Material | STEEL OR IRON NUT |
| Material | STEEL OR IRON SLEEVE |
| 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 |
|---|---|
| 525-16600-003 PRIMARY | Smith-Blair, Inc (USA) |
| Reference | Meaning |
|---|---|
| 512-23-166 | 5/9 Secondary reference Smith-Blair, Inc |
| 512-900-16600-003 | 5/9 Secondary reference Smith-Blair, Inc |
| 512-16600-003 | 5/9 Secondary reference Smith-Blair, Inc |
| 522-90016600-003 | 5/9 Secondary reference Smith-Blair, Inc |
NSN 4730-00-025-7516 is a Coupling,pipe,slip Joint, manufactured by Smith-Blair, Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-025-7516 has 1 manufacturer part number on file: 525-16600-003 (Smith-Blair, Inc).
Key specifications for 525-16600-003: Nominal Pipe Size Accommodated: 1.250 INCHES FIRST END IN; Connection Style: CLAMPING W/ GASKET SEAL (PIPE) ALL ENDS; Nominal Overall Length: 5.000 INCHES IN; Style Designator: COMPRESSION NUT TYPE (DRESSER). 8 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.