Railway Fish Bolt and Nuts M24*145 Fishplate Parts Track Bolts

Product Description

PRODUCT PARAMETER

Railway Track Bolt

Rail track bolts are high-strength fasteners securing rails to sleepers (ties) and joining rail sections via fish plates. Made of 10.9/12.9 grade alloy steel (with phosphated or galvanized coatings for corrosion resistance), they withstand extreme dynamic loads, vibration, and temperature fluctuations. Standards like ISO 898-1 dictate tensile strength (≥1000MPa) and thread precision for secure clamping.

Key applications:

Track Assembly: Fasten rails to concrete/wooden sleepers, maintaining gauge stability under train loads.
Rail Joints: Secure fish plates at rail connections, ensuring smooth train transitions.
Heavy-Haul/High-Speed Rail: Withstand intense pressure in freight lines or high-speed networks.
Extreme Environments: Perform in deserts, coastal areas, or cold regions via corrosion-resistant variants.

Their robust design ensures track integrity, critical for safe, low-maintenance rail operations.

thread size			3/4	7/8	1	1-1/8	M10
d
PP			10	9	8	7	1.5
ds	Min		0.729	0.852	0.976	1.098	16
	Max		0.768	0.895	1.022	1.149	15.73
dk	nominal		1-9/32	1-31/64	2001/11/16	1-57/64	6
	Min		1.2188	1.4219	1.625	1.8281	5.7
	Max		1.3438	1.5469	1.75	1.9531	2.81
k	nominal		15/32	35/64	5/8	45/64	2.56
	Min		0.4063	0.4844	0.5625	0.6406	2.4
	Max		0.5313	0.6094	0.6875	0.7656
r3			1-5/32	1-25/64	2001/5/8	1-55/64
r4			7/16	33/64	19/32	43/64
ds2	nominal		63/64	2001/3/16	2001/3/8	2001/1/2
	Min		0.9531	1.1563	1.3438	1.5313
	Max		1.0156	1.2188	1.4063	1.4688
ds1	nominal		61/64	1-5/32	1-11/32	1-15/32
	Min		0.9219	1.125	1.3125	1.4375
	Max		0.9844	1.1875	1.375	1.5
k1			7/16	1/2	9/16	5/8
r1			9/32	5/16	3/8	7/16
r2			41/64	51/64	15/16	1
b	Min		2001/3/4	2	2002/1/4	2002/1/2
r		Max			0.7
		Min			0.4
Ls		Max			13.25
		Min			12.75
t		Addendum Width	Max		0.5
da		Diameter of the transition circle	Max		14

ABOUT US

LONGSHI FASTENERS MANUFACTURING CO.,LTD.,

Longshi Fastener Manufacturing Co., Ltd., founded in 2008, is located in Shahe City, Hebei Province, close to the country's largestLarge fastener industrial cluster - Yongnian standard parts Industrial Park. The company headquarters covers an area of 21 thousand square meters, the annual output value of 200 million yuan, with more than 200 employees, with domestic More than 100 sets of advanced production equipment. It is a "manufacturing + service" type enterprise integrating fastener production, intelligent warehousing and e-commerce sales. The company's construction of the sea screw e-commerce park is located in Yongnian District, Handan City, Hebei Province, covers an area of 45 acres, the park planning and construction of office area, production area, packaging area, storage area, etc., to provide fastener production, packaging, warehousing, e-commerce sales and other services. Longshi mainly produces high quality and high strength fasteners, and "Longshi" screws have become a well-known brand in the industry. Longshi always adhere to quality first, reputation first. From raw material procurement, design and development, production and processing to products strict quality control is implemented in every link of quality testing and sales to win the recognition of our customers. The company has established standardized product testing laboratories and quality testing processes and standards to ensure that products strictly comply with national standards.

FAQ

Q1: What is your minimum order quantity (MOQ)? Do you charge extra for small orders?
100 pieces MOQ (most peers require 1,000+), no price premium for small orders. First-time customers for cross-border e-commerce/trade get free samples.
Q2:Do you support custom orders? How long does the customization process take?
Longshi Advantage: 8-dimensional customization (material, specification, surface treatment, etc.), with 3D design drawings + process plans.
Q3: What if an item is out of stock?
Stockout rate <0.1% (peers: 10+%), with real-time inventory monitoring. For extreme stockouts, free upgraded alternatives are provided (peers often leave clients waiting indefinitely).
Q4: Do you provide technical support, such as installation guidance or drawing optimization?
Dedicated 1v1 engineer team offering free technical support.
Q5:Can I visit your factory or arrange a factory audit?
Support online factory tours (real-time video of production lines/laboratories) and offline visits (pick-up service available).