Hydraulic Oil Return Pipe Flat Hollow Screw Straight Through Diesel Engine Bolt Two-Hole Oil Pipe Double-Hole Screw Hinged Screw Hydraulic Joint

• Customization: Available
• Type: Joint
• Material: Iron
• Model NO.: Oil return hollow screw
• Muffler Type: Oil Return Hollow Screw
• Deck: None
• Thread Standard: Metric
• Transport Package: Fiber Bag or Carton
• Specification: 20cm-40cm
• Trademark: jingjinji
• Origin: Zhejiang, China
• HS Code: 73079200
• Production Capacity: 100000000m/Year
• Package Size: 30.00cm * 20.00cm * 15.00cm
• Package Gross Weight: 20.000kg

Product Description

Diesel hollow screw oil return screw
 

The oil return hollow screw is a common component in mechanical devices,

especially in fluid delivery systems such as fuel and lubricating oil:
Structural features:

It is hollow in the middle.
This design provides a special return channel for the fluid,
allowing excess oil to The liquid is drained smoothly.
For example,
in the fuel injection system of some engines,
after the fuel injection is completed,
the fuel remaining in the pipeline needs to return through this channel.
The whole body is usually in the shape of a screw with external threads,
which can be easily and stably installed at the corresponding equipment interface to ensure a tight connection and prevent oil leakage.

 
 

Thread specifications	total length	Hole diameter	Total length of thread	Number of holes	Remark	surface treatment	Material
	A	B	C	D
6*1	19	3	8	2	none	galvanized	iron
8*1	24	3	10	2
8*1.25	23	3	9	2
8*1.25	25	3	10	2
8*1	28	3	14	2
8*1	32	3	10	4
8.1	32	3	8	4
10*1.5	28	4	13	2
10*1.25	29	4	13	2
10*1	30	4	14	2
10*1	38	4	13	4
10*1.5	38	3	12	4
10*1	38	4	13	4
12*1.25	35	5	15	2	with beads
12*1.25	35	5	15	2	none
12*1.5	32	5	15	2
12*1.5	43	4	11	4
12*1.25	47	4	18	4
14*1.5	42	4	15	2	There is Top wire
14*1.5	35	4	13	2	none
14*1.5	35	6.5	15	2
14*1.5	39	7	19	2
14*1.5	43	6	23	2
14*1.5	53	5	20	4
16*1.5	32	7	15	2
16*1.5	43	7	18	2
16*1.5	47	7	25	2
16*1.5	55	7	34	2
16*1.5	54	7	15	4
16*1.5	53	7	15	4
18*1.5	43	7	18	2
18*1.5	50	7	23	2
18*1.5	53	8	30	2
18*1.5	82	7	21	4
20*1.5	43	8	16	2
20*1.5	59	8	30	2
22*1.5	49	10	17	2
22*1.5	59	8.5	27	2