The Nipple,tube, cataloged under National Stock Number 4730-00-871-6937, 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 19 specifications, cited from the U.S. Government catalog. 14 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-871-6937 |
| Item Name | Nipple,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 TUBE COUPLING NUT W/SLEEVE AND 1 BULKHEAD NUT |
| Surface Treatment Document and Classification | QQ-+35,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | FLARELESS (TUBE) ALL ENDS |
| Nominal Overall Length | 1.984 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | FLARELESS W/ BULKHEAD THREADS |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.562 INCHES CENTER BULKHEAD IN |
| Nominal Thread Size | 0.562 INCHES ALL ENDS IN |
| Seat Angle | 12.0 DEGREES ALL ENDS |
| Specification/standard Data | 81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 96906-MS51812 GOVERNMENT STANDARD |
| Nondefinitive Spec/std Data | 20A FIGURE A |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A CENTER BULKHEAD A |
| Thread Class | 2A ALL ENDS A |
| Material | STEEL COMP 316 OVERALL |
| Thread Series Designator | UNF CENTER BULKHEAD |
| Thread Series Designator | UNF ALL ENDS |
| 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 |
|---|---|
| MIL-F-18866 | 5/9 Secondary reference U.S. Government activity |
| MS51812-5SS | 2/2 Government specification standardization U.S. Government activity |
| 6-6 080601SA | 5/9 Secondary reference U.S. Government activity |
| 6WBU-SS | 5/1 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| MIL-DTL-18866 | 4/1 Identification reference U.S. Government activity |
| MS51812-25SS | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 6WBU-SS | 5/9 Secondary reference U.S. Government activity |
| J514 | 5/9 Secondary reference U.S. Government activity |
| 6-6 080601SA | 5/1 Secondary reference Sae International Dba Sae International |
| J514 | 5/1 Secondary reference Sae International Dba Sae International |
| MS51812-5SS | 5/9 Secondary reference Imperial |
| 492-15141 | 5/1 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division |
| 2041-6-6C | 5/1 Secondary reference Danfoss Power Solutions II, Llc |
| 6WBUSS | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters |
NSN 4730-00-871-6937 is a Nipple,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-871-6937: Furnished Items and Quantity: 2 TUBE COUPLING NUT W/SLEEVE AND 1 BULKHEAD NUT; Surface Treatment Document and Classification: QQ-+35,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Connection Style: FLARELESS (TUBE) ALL ENDS; Nominal Overall Length: 1.984 INCHES IN. 19 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.