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Tube Nipple — Fittings and Specialties; Hose, Pipe, and Tube (FSC 4730) · Part No. MS51519A16
| National Stock Number | 4730-00-077-1009 |
|---|---|
| Item name | Tube Nipple |
| FLIS item name | Nipple, Boss |
| Part number (commercial reference) | MS51519A16 |
| Alternate references | MIL-DTL-18866; MS51501A16-MS51501B16; MS51501B16; MS51501A16; 16-16 070119CA; 202712-16-16S |
| Unit of issue | EA |
| NIIN | 000771009 |
| NIIN assigned by | United States (NCB code 00) |
| Federal Supply Class (FSC) | 4730 — Fittings and Specialties; Hose, Pipe, and Tube |
| Federal Supply Group (FSG) | 47 — Pipe, Tubing, Hose, and Fittings |
| Unit price (USD) | $30.00 |
| Country of origin | Türkiye (Turkey) |
| Lead time | Within 90 days of order |
| Minimum order | May apply — confirm on quote |
| Documentation | Source documentation provided on all orders |
Characteristics decoded from the federal cataloging record for this tube nipple. Confirm controlling dimensions against your drawing or standard sheet before ordering.
| Material | Steel Overall |
|---|---|
| Thread Class | 2A All Ends |
| Thread Series Designator | Un All Ends |
| Thread Quantity Per Inch | 12 All Ends |
Fluid-line connection hardware including tube and pipe fittings, adapters, elbows, tees, unions, couplings, nipples, and bushings used to join, branch, and terminate hose, pipe, and tube.
A hydraulic boss nipple adapter rated for 3000 PSI, identified for B-1 aircraft support equipment.
Price in context. Across the 342 items we currently stock in FSC 4730 (Fittings and Specialties; Hose, Pipe, and Tube), published unit prices run from $0.38 to $12,000.00. At $30.00, this item sits above the class median of $26.28.
Typical applications. Hydraulic, pneumatic, fuel, and coolant lines on vehicles, aircraft, and ground support equipment.
Applicable standards. MS/AN flare and flareless fittings, SAE J514, MIL-DTL; steel, stainless, brass, and aluminum.
NSN 4730-00-077-1009 is supplied by Quick Brown Fox Solutions as a stock resale item. For custom-manufactured or prototype parts to your print, see our U.S.-based CNC machining services.
Country of origin: Türkiye (Turkey) — a DFARS qualifying country. Türkiye is a NATO ally with a reciprocal defense procurement agreement with the U.S. Department of Defense, making it a qualifying country under DFARS 225.003. On DoD and DLA solicitations, qualifying-country end products are evaluated without Buy American price penalties — they compete on par with domestic product — and DoD trade-agreements clauses (DFARS 252.225-7021) expressly accept qualifying-country end products.
Dollar thresholds. The Trade Agreements Act only applies to supply contracts at or above $174,000 (the WTO GPA threshold effective March 2026); below that — where the vast majority of hardware buys fall — the TAA does not apply at all. The main exclusion is civilian-agency solicitations at or above that threshold that restrict award to TAA designated-country products (Türkiye is not TAA-designated). Buyers are responsible for confirming the origin requirements of their specific solicitation.
Full country-of-origin and source documentation is provided with every order. Fulfillment within 90 days of order. Minimum order may apply.
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