DIN127 Spring Lock Washers Low Price High Quality Made in China

Product Description

PRODUCT PARAMETER

Spring Washer

Spring washers are elastic, split-ring fasteners with a sloped, curved design. When compressed, they generate rebound force to maintain bolt/nut preload, preventing loosening from vibration or thermal expansion. Made of carbon steel (zinc-plated for rust resistance), stainless steel (304/316 for corrosion), or alloy steel, they follow standards like DIN 127, ISO 7093, with sizes matching bolts (M3–M36).

Key applications:

Mechanical Machinery: Secure motors, pumps, or conveyor parts (counteracts vibration-induced loosening).
Automotive/Heavy Equipment: Stabilize engine mounts, chassis bolts, or suspension components (resists road/operation vibrations).
Industrial Piping: Reinforce flange connections in pumps or pipelines (maintains seal under pressure fluctuations).
Electrical Equipment: Fasten terminal blocks or panel covers (prevents loosening from equipment operation).
DIY/Repairs: Add to bolts in lawnmowers, generators, or furniture prone to shifting.

Their elastic rebound makes them essential for vibration-prone assemblies needing reliable anti-loosening support.

Thread size		5	5	6	6	6	8	8	8
d		-18	-15	-12	-14	-18	-16	-18	-22
d	MAx	5.6	5.6	6.76	6.76	6.76	8.76	8.76	8.76
	Min	5.3	5.3	6.4	6.4	6.4	8.4	8.4	8.4
dc	Nominal	18	15	12	14	18	16	18	22
	Max	18.35	15.35	12.35	14.35	18.35	16.35	18.35	22.42
	Min	17.57	14.57	11.57	13.57	17.57	15.57	17.57	21.48
h	Nominal	1.2	1.4	1.4	1.5	1.7	1.9	2	2.2
	Max	1.24	1.44	1.44	1.55	1.75	1.95	2.05	2.25
	Min	1.16	1.36	1.36	1.45	1.65	1.85	1.95	2.15
H	Max	1.8	2.1	2	2.2	2.4	2.6	2.7	3
	Min	1.5	1.8	1.7	1.9	2.1	2.3	2.4	2.6

Thread size		10	10	12	12	14	16	16	20
d		-22	-27	-24	-30	-28	-32	-39	-38
d	Max	10.93	10.93	13.43	13.43	15.43	17.43	17.43	21.52
	Min	10.5	10.5	13	13	15	17	17	21
dc	Nominal	22	27	24	30	28	32	39	38
	Max	22.42	27.42	24.42	30.42	28.42	32.5	39.5	38.5
	Min	21.48	26.48	23.48	29.48	27.48	31.5	38.5	37.5
h	Nominal	2.4	2.8	2.8	3.2	3	3.4	3.6	4
	Max	2.45	2.86	2.86	3.26	3.06	3.47	3.67	4.07
	Min	2.35	2.74	2.74	3.14	2.94	3.33	3.53	3.93
H	Max	3.3	3.7	3.6	4.2	3.9	4.3	4.7	5.1
	Min	2.9	3.3	3.2	3.8	3.5	3.9	4.3	4.7

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).