The Nipple,pipe, cataloged under National Stock Number 4730-01-689-3628, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-689-3628 |
| Item Name | Nipple,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 1.500 INCHES ALL ENDS IN |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Nominal Length | 2.500 INCHES ALL ENDS IN |
| Nominal Overall Length | 2.500 INCHES IN |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | THREADED INTERNAL |
| Material Document and Classification | MS51873 GOVERNMENT STD/SPEC SINGLE MATERIAL RESPONSE BODY |
| Nominal Outside Diameter | 1.900 INCHES ALL ENDS IN |
| Material | STEEL BODY |
| Nominal Thickness | 0.200 INCHES ALL ENDS IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MS51873 | 4/1 Identification reference U.S. Government activity |
| MS51873-171 | 2/2 Government specification standardization U.S. Government activity |
NSN 4730-01-689-3628 is a Nipple,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-703-1552, 4730-01-703-1810. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-689-3628: Nominal Pipe Size Accommodated: 1.500 INCHES ALL ENDS IN; Connection Style: PLAIN (PIPE) ALL ENDS; Nominal Length: 2.500 INCHES ALL ENDS IN; Nominal Overall Length: 2.500 INCHES IN. 10 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.