Stainless Steel DIN 127 Spring Lock Washer

Wanluo’s high quality Stainless Steel DIN 127 Spring Lock Washer are manufactured strictly in accordance with German DIN industrial standards, serving as professional elastic anti-loosening auxiliary fasteners. Different from DIN 125 flat washers that only provide pressure dispersion and surface protection, DIN 127 features a unique split open-loop elastic structure with built-in mechanical tension.

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Product Description

Stainless Steel DIN 127 Spring Lock Washer produced by Wanluo factory continuously provides elastic pre-tightening force between bolt and workpiece, effectively solving the common problems of thread loosening, gap generation and fastening failure caused by equipment vibration, alternating load and temperature change. With excellent elastic recovery performance and biting anti-slip effect, it is perfectly matched with standard bolts and flat washers, widely used in mechanical transmission, automotive equipment, steel structures and vibration-prone industrial assembly scenarios.

Overall Framework Characteristics & Factory Production Standards

DIN 127 spring washers adopt high-quality spring steel integral stamping and precision heat treatment process, with strict dimensional tolerance and elastic coefficient control. The standard open split structure forms continuous elastic tension after compression, which can automatically compensate for thread gap and stress relaxation. The two ends of the washer are finely edged with sharp bite points, which can closely cling to the bolt surface and workpiece, forming anti-slip occlusion to prevent bolt reverse rotation. The overall thickness is uniform with stable elasticity, ensuring no fatigue failure or permanent deformation after long-term repeated compression and vibration. Made of high-toughness spring steel and stainless steel materials, the washers feature excellent fatigue resistance, mechanical stability and corrosion resistance, maintaining lasting anti-loosening performance in high-frequency vibration and harsh working environments.

Product Parameter

Parameter Item	Detailed Specification
Product Name	DIN 127 Spring Lock Washer, Stainless Steel Split Elastic Washer
Executive Standard	DIN 127, ISO Standard, GB Standard, Custom Non-standard Sizes
Available Material	304, 316L Stainless Steel, High-carbon Spring Steel, Zinc-plated Carbon Steel
Size Range	M1.6-M24 full standard matching sizes, custom elastic thickness & outer diameter
Structure Type	Open split loop structure, elastic tension design, bidirectional anti-loosening
Processing Technology	Precision stamping, integral quenching tempering, elastic calibration, edge finishing
Matching Fastener	Compatible with all metric standard bolts, machine screws and flat washers
Surface Treatment	Pickling & passivation / Zinc-plated / Black oxide, anti-rust & anti-corrosion
Mechanical Properties	Strong elastic recovery, anti-vibration, anti-fatigue, no permanent deformation
Packaging Method	Moisture-proof inner bag + export carton, pallet packing for bulk orders
Supply Service	Spot bulk supply, non-standard customization, mixed fastener one-stop procurement

Stainless Steel Din 127 Spring Lock Washer

Nominal Diameter		Φ2	Φ2.2	Φ2.5	Φ3	Φ3.5	Φ4	Φ5	Φ6	Φ7	Φ8	Φ10	Φ12
d	min	2.1	2.3	2.6	3.1	3.6	4.1	5.1	6.1	7.1	8.1	10.2	12.2
d	max	2.4	2.6	2.9	3.4	3.9	4.4	5.4	6.5	7.5	8.5	10.7	12.7
n	Nominal Size	0.9	1	1	1.3	1.3	1.5	1.8	2.5	2.5	3	3.5	4
	max	1	1.1	1.1	1.4	1.4	1.6	1.9	2.65	2.65	3.15	3.7	4.2
	min	0.8	0.9	0.9	1.2	1.2	1.4	1.7	2.35	2.35	2.85	3.3	3.8
h	Nominal Size	0.5	0.6	0.6	0.8	0.8	0.9	1.2	1.6	1.6	2	2.2	2.5
	max	0.6	0.7	0.7	0.9	0.9	1	1.3	1.7	1.7	2.1	2.35	2.65
	min	0.4	0.5	0.5	0.7	0.7	0.8	1.1	1.5	1.5	1.9	2.05	2.35
H	min	1	1.2	1.2	1.6	1.6	1.8	2.4	3.2	3.2	4	4.4	5
H	max	1.2	1.4	1.4	1.9	1.9	2.1	2.8	3.8	3.8	4.7	5.2	5.9
per 1000 units ≈ kg		0.033	0.050	0.053	0.11	0.12	0.18	0.36	0.83	0.93	1.6	2.53	3.82

Nominal Diameter		Φ14	Φ16	Φ18	Φ20	Φ22	Φ24	Φ27	Φ30	Φ36	Φ39	Φ42	Φ45
d	min	14.2	16.2	18.2	20.2	22.5	24.5	27.5	30.5	36.5	39.5	42.5	45.5
d	max	14.7	17	19	21.2	23.5	25.5	28.5	31.7	37.7	40.7	43.7	46.7
n	Nominal Size	4.5	5	5	6	6	7	7	8	10	10	12	12
	max	4.7	5.2	5.2	6.2	6.2	7.25	7.25	8.25	10.25	10.25	12.25	12.25
	min	4.3	4.8	4.8	5.8	5.8	6.75	6.75	7.75	9.75	9.75	11.75	11.75
h	Nominal Size	3	3.5	3.5	4	4	5	5	6	6	6	6	7
	max	3.15	3.7	3.7	4.2	4.2	5.2	5.2	6.2	6.2	6.2	6.2	7.25
	min	2.85	3.3	3.3	3.8	3.8	4.8	4.8	5.8	5.8	5.8	5.8	6.75
H	min	6	7	7	8	8	10	10	12	12	12	12	14
H	max	7.1	8.3	8.3	9.4	9.4	11.8	11.8	14.2	14.2	14.2	16.5	16.5
per 1000 units ≈ kg		6.01	8.91	9.73	15.2	16.5	26.2	28.7	44.3	67.3	71.7	111	117

Core Performance Edge & Commercial Project Application Scope

1. Unique elastic tension structure provides continuous pre-tightening force, automatically compensating for thread gap expansion caused by vibration and thermal expansion, effectively preventing bolt loosening and shedding in long-term operation.

2. Bidirectional sharp biting ends form firm occlusion between the bolt and mounting surface, locking the thread to avoid reverse rotation and loosening, greatly improving the overall connection stability of vibration-prone equipment.

3. Professional spring heat treatment process ensures excellent fatigue resistance, maintaining stable elastic performance after millions of vibration cycles without elastic failure, aging or permanent deformation.

4. Perfectly used in combination with DIN 125 flat washers, integrating surface protection and elastic anti-loosening functions, achieving dual fastening effect and optimizing overall assembly safety and durability.

5. Multiple material options adapt to diverse harsh environments, widely applied in mechanical equipment, automotive parts, engineering steel structures, electrical facilities and outdoor vibration-intensive assembly scenarios.

Stainless Steel Din 127 Spring Lock Washer

FAQ

Q1: What is the difference between DIN 127 spring washer and DIN 125 flat washer?

A1: DIN 125 flat washer focuses on pressure dispersion and workpiece surface protection with no anti-loosening function; DIN 127 spring washer relies on elastic tension and biting structure to provide professional vibration resistance and thread anti-loosening effect, usually used together with flat washers for high-stability assembly.

Q2: Is it necessary to use spring washers with flat washers?

A2: For most industrial vibration scenarios, combined use is recommended. The flat washer protects the workpiece surface, while the spring washer provides anti-loosening locking, avoiding indentation damage caused by the sharp ends of the spring washer directly pressing the workpiece.

Q3: Will DIN 127 spring washer lose elasticity after long-term use?

A3: Our products adopt precise quenching and tempering treatment with stable mechanical properties. Under standard working load, they feature strong anti-fatigue performance and will not fail or deform easily, ensuring long-term stable anti-loosening effect.

Q4: What scenarios are DIN 127 washers suitable for?

A4: Mainly used for equipment with frequent vibration, alternating load and temperature change, including mechanical transmission parts, automotive chassis accessories, steel structure engineering, electrical power equipment and outdoor fixed facilities.

Q5: Can you customize high-elasticity special specifications?

A5: Yes. We support customizing special elastic coefficient, thickened and heightened sizes, and super anti-corrosion surface treatment to meet anti-loosening requirements of heavy-load and high-vibration equipment.

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