Safety Washers, DIN 9250

1. Description

This range of Safety Washers is based on the Disc Spring concept. The washer has the unique feature of radial serrations on both the concave and convex surfaces. When tightened to near capacity these serrations bite into the mating surfaces, thus preventing the loosening of the screw due to vibration and other similar circumstances.
The Safety Washer offers a reduced outside diameter compared with a conventional Disc Spring Washer. This corresponds to most screw head sizes and is very compatible with the hexagonal socket type screw.

Safety Washers, DIN 9250.jpg

2. Specification Requirements

Bolt Size		d1	d2	s	h	h	d1	d2	s	h	h	Packaging (pcs/box)
metric	imperial	d1	d2	s	max.	min.	d1	d2	s	max.	min.
mm	inch	mm	mm	mm	mm	mm	inch	inch	inch	inch	inch
1.6		1.7	3.2	0.35	0.6	0.38	0.067	0.126	0.014	0.024	0.015	2000
2		2.2	4	0.35	0.6	0.39	0.087	0.157	0.014	0.024	0.015	2000
2.5		2.7	4.8	0.45	0.9	0.49	0.106	0.189	0.018	0.035	0.019	2000
3	1/8"	3.2	5.5	0.45	0.9	0.51	0.126	0.217	0.018	0.035	0.020	2000
3.5		3.7	6	0.45	0.9	0.52	0.146	0.236	0.018	0.035	0.020	2000
4	5/32"	4.3	7	0.5	1.0	0.59	0.169	0.276	0.020	0.039	0.023	1000
5	3/16"	5.3	9	0.6	1.1	0.73	0.209	0.354	0.024	0.043	0.029	1000
6		6.4	10	0.7	1.2	0.82	0.252	0.394	0.028	0.047	0.032	1000
6.35	1/4"	6.7	9.5	0.7	1.2	0.79	0.264	0.374	0.028	0.047	0.031	1000
7		7.4	12	0.7	1.3	0.89	0.291	0.472	0.028	0.051	0.035	1000
8	5/16"	8.4	13	0.8	1.4	0.98	0.331	0.512	0.031	0.055	0.039	1000
10	3/8"	10.5	16	1	1.6	1.21	0.413	0.630	0.039	0.063	0.048	1000
11.1	7/16"	11.6	15.9	1	1.6	1.18	0.457	0.626	0.039	0.063	0.046	500
12		13	18	1.1	1.7	1.31	0.512	0.709	0.043	0.067	0.052	500
12.7	1/2"	13.7	19	1.1	1.8	1.33	0.539	0.748	0.043	0.071	0.052	500
14	9/16"	15	22	1.2	2.0	1.52	0.591	0.866	0.047	0.079	0.060	500
16	5/8"	17	24	1.3	2.1	1.63	0.669	0.945	0.051	0.083	0.064	500
18		19	27	1.5	2.3	1.85	0.748	1.063	0.059	0.091	0.073	250
19	3/4"	20	30	1.5	2.5	1.98	0.787	1.181	0.059	0.098	0.078	250
20		21	30	1.5	2.5	1.94	0.827	1.181	0.059	0.098	0.076	250
22	7/8"	23	33	1.5	2.7	2.08	0.906	1.299	0.059	0.106	0.082	100
24		25.6	36	1.8	2.9	2.32	1.008	1.417	0.071	0.114	0.091	100
25.4	1"	27	38	2	3.1	2.52	1.063	1.496	0.079	0.122	0.099	100
27		28.6	39	2	3.1	2.52	1.126	1.535	0.079	0.122	0.099	100
30	1 1/8"	31.6	45	2	3.6	2.78	1.244	1.772	0.079	0.142	0.109	100
33	1 1/4"	34.6	50	2.5	4.0	3.26	1.362	1.969	0.098	0.157	0.128	100
36	1 3/8"	38	54	2.5	4.2	3.38	1.496	2.126	0.098	0.165	0.133	50

窗体顶端

Specification Requirements:

● Dimensions: See dimensions above.

● Available Materials:

– Carbon Steel SAE 1060.

– Stainless steel.

● Available Finishes:

– Phosphated.

– Plain w/light protective oil.

– Zinc plated clear (ZC).

– Zinc plated yellow (YZ).

– Stainless steel.

– Customized.

Category:	Washer,Other washer
Metarial:	Carbon Steel,Stainless Steel
Standard:
Surface:	Plain,Blue zn/white zn,Yellow zn,Zn
Place of Origin:	Pudong Xinqu
Brand Name:
MOQ:	1 MPCS
Payment Terms:	30% deposit, T/T the balance before shipment
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To:	Technical Stamping (Shanghai) Co., Ltd.
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