Din 127 Spring Washer

 

 

公称直径		φ2	φ2.2	φ2.5	φ 3	φ3.5	φ4	中5	φ6	φ7	中8	φ10	φ12
d	最小值	2.1	2.3	2.6	3.1	3.6	4.1	5.1	6.1	7.1	8.1	10.2	12.2
	最大值	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	公称	0.9	1	1	1.3	1.3	1.5	1.8	2.5	2.5	3	3.5	4
	最大值	1	1.1	1.1	1.4	1.4	1.6	19	2.65	2.65	3.15	3.7	4.2
	最小值	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	公称	0.5	0.6	0.6	0.8	0.8	0.9	1.2	1.6	1.6	2	2.2	2.5
	最大值	0.6	0.7	0.7	0.9	0.9	1	1.3	1.7	1.7	2.1	2.35	2.65
	最小值	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	最小值	1	1.2	12	1.6	1.6	1.8	2.4	3.2	3.2	4	4.4	5
	最大值	1.2	1.4	1.4	1.9	1.9	2.1	2.8	3.8	3.8	4.7	5.2	5.9
千件重(钢制)=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

 

公称直径		φ14	φ16	φ18	φ20	φ22	φ24	φ27	φ30	φ36	φ39	φ42	φ45
d	最小值	14.2	16.2	18.2	20.2	22.5	24.5	27.5	30.5	36.5	39.5	42.5	45.5
	最大值	14.7	17	19	21.2	23.5	25.5	28.5	31.7	37.7	40.7	43.7	46.7
n	公称	4.5	5	5	6	6	7	7	8	10	10	12	12
	最大值	4.7	5.2	5.2	6.2	6.2	7.25	7.25	8.25	10.25	10.25	12.25	12.25
	最小值	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	公称	3	3.5	3.5	4	4	5	5	6	6	6	7	7
	最大值	3.15	3.7	3.7	4.2	4.2	5.2	5.2	6.2	6.2	6.2	7.25	7.25
	最小值	2.85	3.3	3.3	3.8	3.8	4.8	4.8	5.8	5.8	5.8	6.75	6.75
H	最小值	6	7	7	8	8	10	10	12	12	12	14	14
	最大值	7.1	8.3	8.3	9.4	9.4	11.8	11.8	14.2	14.2	14.2	16.5	16.5
千件重(钢制)=kg		6.01	8.91	9.73	15.2	16.5	26.2	28.7	44.3	67.3	71.7	111	117

 

 

Spring washers (also called elastic washers) are key auxiliary fasteners with a spiral or wavy elastic structure. Designed to pair with bolts, screws, and other threaded connectors, they comply with international/national standards such as DIN 127, ISO 7085, and GB/T 93. Their core function is anti-loosening-relying on elastic deformation to generate persistent preload, preventing fastener loosening caused by vibration, impact, or temperature changes. Widely used in machinery, automotive, electrical equipment, and construction industries, they excel in dynamic load scenarios or assemblies requiring long-term connection stability.

 

 

Raw Materials

Surface Treatments

Plain, zinc plated, black oxide, hot-dip galvanizing (H.D.G), Dacromet, phosphating.

 

 

 

Hardness & Performance Grades

Hardness: HV 350–450, HRC 35–45 (ensures elastic recovery capability);

Performance grades: Corresponding to bolt grades (4.8, 8.8, 10.9), matching strength for reliable anti-loosening.

 

 

 

 

• Match with bolts: Select inner diameter consistent with bolt size; avoid oversized/undersized washers affecting elasticity;
• Material/coating selection: Use stainless steel/Dacromet for humid/corrosive environments; carbon steel for general dry conditions;
• Correct installation: Place flat side against workpiece/nut (avoid reversing); do not stack multiple washers (affects elasticity);
• Avoid over-tightening: Prevent permanent deformation or loss of elastic function;
• Regular inspection: Check for fatigue, deformation, or rust; replace immediately if elastic performance declines.

 

 

 

• ISO9001:2015 certified; all products undergo elasticity, hardness, dimensional accuracy, and corrosion resistance testing;
• Provides long-term quality guarantees and professional technical after-sales support.

 

 

Aspect	Spring Washers	Flat Washers
Core Function	Anti-loosening + buffering	Load distribution, surface protection, gap adjustment
Structure	Spiral/wavy (elastic)	Flat annular (rigid)
Application Scenarios	Vibration/shock-prone environments	General assemblies, soft material surfaces, gap compensation
Materials	Mainly carbon steel/stainless steel (emphasizing elasticity)	Diverse (including non-metals, emphasizing adaptability)
Usage Combination	Often used with flat washers (flat washer protects surface, spring washer prevents loosening)	Used alone or paired with spring washers

 

 

Hot Tags: din 127 spring washer, China din 127 spring washer manufacturers, suppliers, factory