Parafusos de dobre extremo

Descrición curta:

Os parafusos de dobre extremo son fixadores roscados que teñen unha rosca nos dous extremos cunha parte sen rosca entre os dous extremos roscados.

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Introdución do produto

Double end stud bolts are threaded fasteners that have a thread on both ends with an unthreaded portion in between the two threaded ends. Both ends have chamfered points, but round points may be furnished on either or both ends at the manufacturer’s option,Double ends studs are designed to be used where one of the threaded ends is installed in a tapped hole and a hex nut used on the other end to clamp a fixture onto the surface that the stud has been threaded into.

Another name that is also sometimes used for Double End Studs is Tap End Stud. A Tap End Stud will have different thread lengths on both ends. It has one short thread that is intended to be used in a tapped hole.Double end stud bolts are mostly used in repair and construction work. They come in a wide range of different sizes for custom applications depending on its dimensional requirements. These Double end stud bolts come in the anti-corrosion stainless steel, alloy steel and carbon steel materials which ensures that the structure doesn’t weaken because of rust.

Aplicacións

Double end stud bolts can be used for many different applications that include fastening wood, steel, and other construction materials for projects such as construction applications, plumbing fittings, metal fabrication, and machinery repairs.Black-oxide steel bolts are mildly corrosion resistant in dry environments. Zinc-plated steel bolts resist corrosion in wet environments. Black ultra-corrosion-resistant-coated steel bolts resist chemicals and withstand 1,000 hours of salt spray.Coarse threads are the industry standard; choose these bolts if you don’t know the threads per inch. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance.Grade 2 bolts tend to be used in construction for joining wood components. Grade 4.8 bolts are used in small engines. Grade 8.8 10.9 or 12.9 bolts provide high tensile strength. One advantage bolts fasteners have over welds or rivets is that they allow for easy disassembly for repairs and maintenance.

Tamaño roscado d		M2	M2.5	M3	M4	M5	M6	M8	M10	M12	(M14)	M16
P	ton	0.4	0.45	0.5	0.7	0.8	1	1.25	1.5	1.75	2	2
bm	nominal	4	5	6	8	10	12	16	20	24	28	32
	valor mínimo	3.4	4.4	5.4	7.25	9.25	11.1	15.1	18.95	22.95	26.95	30.75
	valor de cresta	4.6	5.6	6.6	8.75	10.75	12.9	16.9	21.05	25.05	29.05	33.25
ds	valor de cresta	2	2.5	3	4	5	6	8	10	12	14	16
ds	valor mínimo	1.75	2.25	2.75	3.7	4.7	5.7	7.64	9.64	11.57	13.57	15.57
Mil pezas de aceiro pesan kg		-	-	-	-	-	-	-	-	-	-	-
lonxitude do fío b		-	-	-	-	-	-	-	-	-	-	-
Tamaño roscado d		(M18)	M20	(M22)	M24	(M27)	M30	(M33)	M36	(M39)	M42	M48
P	ton	2.5	2.5	2.5	3	3	3.5	3.5	4	4	4.5	5
bm	nominal	36	40	44	48	54	60	66	72	78	84	96
	valor mínimo	34.75	38.75	42.75	46.75	52.5	58.5	64.5	70.5	76.5	82.25	94.25
	valor de cresta	37.25	41.25	45.25	49.25	55.5	61.5	67.5	73.5	79.5	85.75	97.75
ds	valor de cresta	18	20	22	24	27	30	33	36	39	42	48
ds	valor mínimo	17.57	19.48	21.48	23.48	26.48	29.48	32.38	35.38	38.38	41.38	47.38
Mil pezas de aceiro pesan kg		-	-	-	-	-	-	-	-	-	-	-
lonxitude do fío b		-	-	-	-	-	-	-	-	-	-	-