They are 10 -15mm long and allow them to be fully inserted into shallow threaded holes to prevent bottoming out or sticking out. Type: threaded reducer. In order to facilitate installation and removal, there is a groove on the top of each thread reducer, which can be used with a flat-blade screwdriver.
eBay
KegLand Duotight -6.5mm (1/4")x9,5mm (3/8") Reducer Plastic Quick Connect Pipe Connector Beer Tube Pushfit Push-in Fittings
Aliexpress UK
Thread Size: M14x2 to M10x1. The head is a hexagon shape and the inner side is hollow and threaded as well. The hollow threaded design is only good for threading and wire installation but also good for converting the different threads.
eBay
High Pressure Washer Coupler Metric M22 15mm Male to M22 14mm Female Reducer Thread Connector Hose Garden Water Pipe Adapter
Aliexpress UK
(1 Waterproof Breather Screw Air Vent. M²) and maintains pressure balance by allowing air to flow freely in or out based on pressure differences. Material: Nylon. We'd like to settle any problem in a friendly manner.
eBay
304 stainless steel male threaded joint hose elbow water pipe reducer 1/4 1/2 (6 8 10 12 15 20mm)
Aliexpress UK
Description:1. Material: Our thread adapters sleeve reducing nuts are made of stainless steel 303, which is finely crafted, has strong wear and corrosion resistance, is high strength, is not easy to rust, and has a long service life.2. Design: The nut inserts are durable, professional, beautiful and simple in structure. Each threaded reducing nut has a slot on the top to accommodate a flat-blade screwdriver, making it easier to screw in. Its stable structure and excellent performance can effectively restore threaded connections and extend the service life of parts. The thread size is standard, the thread is clear, and it is not easy to slip off, making it easy to repair and adjust equipment.3. Easy To Use: Easy to install and simple to operate, use the slotted screwdriver head to screw in the screw insert.
eBay
Brass M22" to 3/4" Male Female Thread Connector Kitchen Bathroom thread Fitting Reducer Copper Garden Water Pipe Connector
Aliexpress UK
15MM SNAP ON HOSEPIPE OUTLET. TO FIT AN IBC TANK. These connectors fit direct onto most ibc tanks too,see my website photos that shows how. HOZE CONNECTOR TAP. VERY SIMPLE AND EASY TO USE. PRICE EACH £3.50.
eBay
Spray Gun Pressure Valve 1/4" NPT Oil Water Filter/Pressure Reducer Combo with Drain Valve / Paint Gun Pressure Gauge，Home Tools
Aliexpress UK
TIMCO Classic Multi-Purpose Reduced Head Countersunk Gold Piano Hinge Woodscrews,All sizes. TIMco Quality Screws, Made for the trade. TIMCO Classic Multi-Purpose Reduced Head Countersunk Gold Piano Hinge Woodscrews - 3.0 x 12.
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6 8 10 12 14 16 19 20 25 32 38-51mm Hose Barb Reducer Tee 3 Ways Splitter 304 Stainless Steel Hosetail Connector Coupler Fitting
Aliexpress UK
Plasterboard screws with bugle head. 𝗣𝗥𝗘𝗖𝗜𝗦𝗜𝗢𝗡 𝗜𝗡𝗦𝗧𝗔𝗟𝗟𝗔𝗧𝗜𝗢𝗡: PH screws with a bugle head and 25° sharp point screws for smooth, easy penetration without damaging walls or ceilings.
eBay
Plastic Flexible Hose Connector Barb Reducer Variable Diameter Fitting Adapter Splicer Joint Water Pipe Repair Garden Aquarium
Aliexpress UK
They are 10 -15mm long and allow them to be fully inserted into shallow threaded holes to prevent bottoming out or sticking out. Type: threaded reducer. In order to facilitate installation and removal, there is a groove on the top of each thread reducer, which can be used with a flat-blade screwdriver.
eBay
10 Pcs/lot Water Flow Restrictor Shower Water Flow Reducer Shower Head Limiter Set Bathroom Accessories
Aliexpress UK