About 8,000 types of vacuum components in stock at all times.Business Hours： 9:00-18:00, excluding weekends and holidays

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  • Feedthrough Feedthrough
    Feedthrough
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    Isolator
  • Viewport Viewport
    Viewport
  • Vacuum Component Vacuum Component
    Vacuum Component
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    Vacuum Valve
  • Vented Screw Vented Screw
    Vented Screw
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Contact Us
Shipping accepted on the day on orders until 17:00
(Hours 9:00 to 18:00 except Saturdays, Sundays, and holidays)
  1. Cosmotec for Vacuum Components
  2. Vented Screw
  3. Washers (precision cleaned)
  4. Flat washer
  5. Flat washers, there is an air hole, Miri

Flat washers, there is an air hole, Miri

Flat washers, there is an air hole, Miri

▼UC Components Pre-Cleaned and Pre-Baked Products for Vacuum Equipment (RediVac®)
We offer precision-cleaned parts that are ready to use.
Pre-baked products are also available
A wide selection of bolts with air holes for vacuum applications
Choose the right part from a wide selection of bolts, nuts, washers, O-rings, and more!

▼The following types are standardized
Material: SUS304/A2, SUS316/A4, A4A286, Nickel 200, Aluminum, etc.
Coating: Uncoated, electropolished, nickel coated, tungsten coated, molybdenum disulfide coated, gold coated, silver coated, silver chromate coated
Vented Bolts: side hole, through hole in the center

▼Others
If you have any questions about our products, please feel free to contact us from the "Inquiry" button.

For UC Components products, MOQ quantity may be adjusted by bulk purchase.
Please contact us separately in the following cases.

-Products with MOQs of 26 or more
-When you are considering combining other UC Components products.
-When your order is due several months or more in advance.


Precision Cleaning Request

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Basic Information
Air hole Yes (Washer)
Inquiry for this subcategory

We have 178 type candidate

※ Please click on the product code or model for more information.

front.product.product_code
Model
 Minimum order Processing method Inch / mm size Material Inside diameter (mm) The outer diameter (mm) type
Stock & Delivery
front.product.price
front.product.tax_included2
69494
MFW-02
280 Nothing Miri M2 SUS A2 2.2 5.0 Flat washer
69495
MFW-02.5
280 Nothing Miri M2.5 SUS A2 2.7 6.0 Flat washer
69496
MFW-02.5-A
25 Silver-coated Miri M2.5 SUS A2 2.7 6.0 Flat washer
69497
MFW-02.5-AU
25 Gold-coated Miri M2.5 SUS A2 2.7 6.0 Flat washer
69498
MFW-02.5-C
80 Molybdenum disulfide coat Miri M2.5 SUS A2 2.7 6.0 Flat washer
69499
MFW-02.5-EP
25 電解研磨 Miri M2.5 SUS A2 2.7 6.0 Flat washer
69500
MFW-02.5-K
60 Nickel coat Miri M2.5 SUS A2 2.7 6.0 Flat washer
69501
MFW-02.5-W
25 Tungsten Court Miri M2.5 SUS A2 2.7 6.0 Flat washer
69502
MFW-02-A
25 Silver-coated Miri M2 SUS A2 2.2 5.0 Flat washer
69503
MFW-02-AU
25 Gold-coated Miri M2 SUS A2 2.2 5.0 Flat washer
69504
MFW-02-C
80 Molybdenum disulfide coat Miri M2 SUS A2 2.2 5.0 Flat washer
69505
MFW-02-EP
25 電解研磨 Miri M2 SUS A2 2.2 5.0 Flat washer
69506
MFW-02-K
60 Nickel coat Miri M2 SUS A2 2.2 5.0 Flat washer
69507
MFW-02-W
25 Tungsten Court Miri M2 SUS A2 2.2 5.0 Flat washer
69508
MFW-03
280 Nothing Miri M3 SUS A2 3.2 7.0 Flat washer
69509
MFW-03-A
25 Silver-coated Miri M3 SUS A2 3.2 7.0 Flat washer
69510
MFW-03-AU
25 Gold-coated Miri M3 SUS A2 3.2 7.0 Flat washer
69511
MFW-03-C
80 Molybdenum disulfide coat Miri M3 SUS A2 3.2 7.0 Flat washer
69512
MFW-03-EP
25 電解研磨 Miri M3 SUS A2 3.2 7.0 Flat washer
69513
MFW-03-K
60 Nickel coat Miri M3 SUS A2 3.2 7.0 Flat washer
69514
MFW-03-W
25 Tungsten Court Miri M3 SUS A2 3.2 7.0 Flat washer
69515
MFW-04
140 Nothing Miri M4 SUS A2 4.3 9.0 Flat washer
69516
MFW-04-A
25 Silver-coated Miri M4 SUS A2 4.3 9.0 Flat washer
69517
MFW-04-AU
25 Gold-coated Miri M4 SUS A2 4.3 9.0 Flat washer
69518
MFW-04-C
80 Molybdenum disulfide coat Miri M4 SUS A2 4.3 9.0 Flat washer
69519
MFW-04-EP
25 電解研磨 Miri M4 SUS A2 4.3 9.0 Flat washer
69520
MFW-04-K
60 Nickel coat Miri M4 SUS A2 4.3 9.0 Flat washer
69521
MFW-04-W
25 Tungsten Court Miri M4 SUS A2 4.3 9.0 Flat washer
69522
MFW-05
130 Nothing Miri M5 SUS A2 5.3 10.0 Flat washer
69523
MFW-05-A
25 Silver-coated Miri M5 SUS A2 5.3 10.0 Flat washer
69524
MFW-05-AU
25 Gold-coated Miri M5 SUS A2 5.3 10.0 Flat washer
69525
MFW-05-C
70 Molybdenum disulfide coat Miri M5 SUS A2 5.3 10.0 Flat washer
69526
MFW-05-EP
25 電解研磨 Miri M5 SUS A2 5.3 10.0 Flat washer
69527
MFW-05-K
50 Nickel coat Miri M5 SUS A2 5.3 10.0 Flat washer
69528
MFW-05-W
25 Tungsten Court Miri M5 SUS A2 5.3 10.0 Flat washer
69529
MFW-06
120 Nothing Miri M6 SUS A2 6.4 12.0 Flat washer
69530
MFW-06-A
25 Silver-coated Miri M6 SUS A2 6.4 12.0 Flat washer
69531
MFW-06-AU
25 Gold-coated Miri M6 SUS A2 6.4 12.0 Flat washer
69532
MFW-06-C
70 Molybdenum disulfide coat Miri M6 SUS A2 6.4 12.0 Flat washer
69533
MFW-06-EP
25 電解研磨 Miri M6 SUS A2 6.4 12.0 Flat washer
69534
MFW-06-K
40 Nickel coat Miri M6 SUS A2 6.4 12.0 Flat washer
69535
MFW-06-W
25 Tungsten Court Miri M6 SUS A2 6.4 12.0 Flat washer
69536
MFW-08
110 Nothing Miri M8 SUS A2 8.4 16.0 Flat washer
69537
MFW-08-A
25 Silver-coated Miri M8 SUS A2 8.4 16.0 Flat washer
69538
MFW-08-C
60 Molybdenum disulfide coat Miri M8 SUS A2 8.4 16.0 Flat washer
69539
MFW-08-EP
25 電解研磨 Miri M8 SUS A2 8.4 16.0 Flat washer
69540
MFW-08-K
40 Nickel coat Miri M8 SUS A2 8.4 16.0 Flat washer
69541
MFW-08-W
25 Tungsten Court Miri M8 SUS A2 8.4 16.0 Flat washer
69542
MFW-10
80 Nothing Miri M10 SUS A2 10.5 20.0 Flat washer
69543
MFW-10-A
25 Silver-coated Miri M10 SUS A2 10.5 20.0 Flat washer
69544
MFW-10-C
50 Molybdenum disulfide coat Miri M10 SUS A2 10.5 20.0 Flat washer
69545
MFW-10-EP
25 電解研磨 Miri M10 SUS A2 10.5 20.0 Flat washer
69546
MFW-10-K
25 Nickel coat Miri M10 SUS A2 10.5 20.0 Flat washer
69547
MFW-10-W
25 Tungsten Court Miri M10 SUS A2 10.5 20.0 Flat washer
69548
MFW-12
40 Nothing Miri M12 SUS A2 13.0 24.0 Flat washer
69549
MFW-12-A
25 Silver-coated Miri M12 SUS A2 13.0 24.0 Flat washer
69550
MFW-12-C
40 Molybdenum disulfide coat Miri M12 SUS A2 13.0 24.0 Flat washer
69551
MFW-12-EP
25 電解研磨 Miri M12 SUS A2 13.0 24.0 Flat washer
69552
MFW-12-K
25 Nickel coat Miri M12 SUS A2 13.0 24.0 Flat washer
69553
MFW-12-W
25 Tungsten Court Miri M12 SUS A2 13.0 24.0 Flat washer
69554
MFWV-02
50 Nothing Miri M2 SUS A2 2.2 5.0 Flat washer
69555
MFWV-02.5
50 Nothing Miri M2.5 SUS A2 2.7 6.0 Flat washer
69556
MFWV-02.5-A
25 Silver-coated Miri M2.5 SUS A2 2.7 6.0 Flat washer
69557
MFWV-02.5-C
25 Molybdenum disulfide coat Miri M2.5 SUS A2 2.7 6.0 Flat washer
69558
MFWV-02.5-EP
25 電解研磨 Miri M2.5 SUS A2 2.7 6.0 Flat washer
69559
MFWV-02.5-K
25 Nickel coat Miri M2.5 SUS A2 2.7 6.0 Flat washer
69560
MFWV-02.5-W
25 Tungsten Court Miri M2.5 SUS A2 2.7 6.0 Flat washer
69561
MFWV-02-A
25 Nothing Miri M2 SUS A2 2.2 5.0 Flat washer
69562
MFWV-02-C
25 Molybdenum disulfide coat Miri M2 SUS A2 2.2 5.0 Flat washer
69563
MFWV-02-EP
25 電解研磨 Miri M2 SUS A2 2.2 5.0 Flat washer
69564
MFWV-02-K
25 Nickel coat Miri M2 SUS A2 2.2 5.0 Flat washer
69565
MFWV-02-W
25 Tungsten Court Miri M2 SUS A2 2.2 5.0 Flat washer
69566
MFWV-03
60 Nothing Miri M3 SUS A2 3.2 7.0 Flat washer
69567
MFWV-03-A
25 Silver-coated Miri M3 SUS A2 3.2 7.0 Flat washer
69568
MFWV-03-AU
25 Gold-coated Miri M3 SUS A2 3.2 7.0 Flat washer
69569
MFWV-03-C
25 Molybdenum disulfide coat Miri M3 SUS A2 3.2 7.0 Flat washer
69570
MFWV-03-EP
25 電解研磨 Miri M3 SUS A2 3.2 7.0 Flat washer
69571
MFWV-03-K
25 Nickel coat Miri M3 SUS A2 3.2 7.0 Flat washer
69572
MFWV-03-W
25 Tungsten Court Miri M3 SUS A2 3.2 7.0 Flat washer
69573
MFWV-04
50 Nothing Miri M4 SUS A2 4.3 9.0 Flat washer
69574
MFWV-04-A
25 Silver-coated Miri M4 SUS A2 4.3 9.0 Flat washer
69575
MFWV-04-C
25 Molybdenum disulfide coat Miri M4 SUS A2 4.3 9.0 Flat washer
69576
MFWV-04-EP
25 電解研磨 Miri M4 SUS A2 4.3 9.0 Flat washer
69577
MFWV-04-K
40 Nickel coat Miri M4 SUS A2 4.3 9.0 Flat washer
69578
MFWV-04-W
25 Tungsten Court Miri M4 SUS A2 4.3 9.0 Flat washer
69579
MFWV-05
50 Nothing Miri M5 SUS A2 5.3 10.0 Flat washer
69580
MFWV-05-A
25 Silver-coated Miri M5 SUS A2 5.3 10.0 Flat washer
69581
MFWV-05-C
25 Molybdenum disulfide coat Miri M5 SUS A2 5.3 9.5 Flat washer
69582
MFWV-05-EP
25 電解研磨 Miri M5 SUS A2 5.3 10.0 Flat washer
69583
MFWV-05-K
40 Nickel coat Miri M5 SUS A2 5.3 9.5 Flat washer
69584
MFWV-05-W
25 Tungsten Court Miri M5 SUS A2 5.3 10.0 Flat washer
69585
MFWV-06
40 Nothing Miri M6 SUS A2 6.4 12.0 Flat washer
69586
MFWV-06-A
25 Silver-coated Miri M6 SUS A2 6.4 12.0 Flat washer
69587
MFWV-06-C
25 Molybdenum disulfide coat Miri M6 SUS A2 6.4 11.0 Flat washer
69588
MFWV-06-EP
25 電解研磨 Miri M6 SUS A2 6.4 12.0 Flat washer
69589
MFWV-06-K
40 Nickel coat Miri M6 SUS A2 6.4 11.0 Flat washer
69590
MFWV-06-W
25 Tungsten Court Miri M6 SUS A2 6.4 11.0 Flat washer
69591
MFWV-08
50 Nothing Miri M8 SUS A2 8.5 16.0 Flat washer
69592
MFWV-08-A
25 Silver-coated Miri M8 SUS A2 8.5 16.0 Flat washer
69593
MFWV-08-C
25 Molybdenum disulfide coat Miri M8 SUS A2 8.4 16.0 Flat washer
69594
MFWV-08-EP
25 電解研磨 Miri M8 SUS A2 8.4 16.0 Flat washer
69595
MFWV-08-K
40 Nickel coat Miri M8 SUS A2 8.4 16.0 Flat washer
69596
MFWV-08-W
25 Tungsten Court Miri M8 SUS A2 8.5 16.0 Flat washer
69597
MFWV-10
40 Nothing Miri M10 SUS A2 10.5 20.0 Flat washer
69598
MFWV-10-A
25 Silver-coated Miri M10 SUS A2 10.5 20.0 Flat washer
69599
MFWV-10-C
25 Molybdenum disulfide coat Miri M10 SUS A2 10.5 20.0 Flat washer
69600
MFWV-10-EP
25 電解研磨 Miri M10 SUS A2 10.5 20.0 Flat washer
69601
MFWV-10-K
40 Nickel coat Miri M10 SUS A2 10.5 20.0 Flat washer
69602
MFWV-10-W
25 Tungsten Court Miri M10 SUS A2 10.5 20.0 Flat washer
69603
MFWV-12
25 Nothing Miri M12 SUS A2 13.0 24.0 Flat washer
69604
MFWV-12-A
25 Silver-coated Miri M12 SUS A2 13.0 24.0 Flat washer
69605
MFWV-12-C
25 Molybdenum disulfide coat Miri M12 SUS A2 13.0 24.0 Flat washer
69606
MFWV-12-EP
25 電解研磨 Miri M12 SUS A2 13.0 24.0 Flat washer
69607
MFWV-12-K
25 Nickel coat Miri M12 SUS A2 13.0 24.0 Flat washer
69608
MFWV-12-W
25 Tungsten Court Miri M12 SUS A2 13.0 24.0 Flat washer
78573
WF-02
150 Nothing inch #2 SUS 18-8 2.2606 3.7846 Flat washer
78574
WF-02-A
25 Silver-coated inch #2 SUS 18-8 2.2606 3.7846 Flat washer
78575
WF-02-AU
25 Gold-coated inch #2 SUS 18-8 2.2606 3.7846 Flat washer
78576
WF-02-C
80 Molybdenum disulfide coat inch #2 SUS 18-8 2.2606 3.7846 Flat washer
78577
WF-02-EP
25 電解研磨 inch #2 SUS 18-8 2.2606 3.7846 Flat washer
78578
WF-02-K
60 Nickel coat inch #2 SUS 18-8 2.2606 3.7846 Flat washer
78579
WF-02-W
25 Tungsten Court inch #2 SUS 18-8 2.2606 3.7846 Flat washer
78580
WF-04
140 Nothing inch #4 SUS 18-8 2.921 5.3086 Flat washer
78581
WF-04-A
30 Silver-coated inch #4 SUS 18-8 2.921 5.3086 Flat washer
78582
WF-04-AU
25 Gold-coated inch #4 SUS 18-8 2.921 5.3086 Flat washer
78583
WF-04-C
80 Molybdenum disulfide coat inch #4 SUS 18-8 2.921 5.3086 Flat washer
78584
WF-04-EP
25 電解研磨 inch #4 SUS 18-8 2.921 5.3086 Flat washer
78585
WF-04-K
60 Nickel coat inch #4 SUS 18-8 2.921 5.3086 Flat washer
78586
WF-04-W
25 Tungsten Court inch #4 SUS 18-8 2.921 5.3086 Flat washer
78587
WF-05
200 Nothing inch #5 SUS 18-8 3.2512 6.0452 Flat washer
78588
WF-05-A
30 Silver-coated inch #5 SUS 18-8 3.2512 6.0452 Flat washer
78589
WF-05-AU
25 Gold-coated inch #5 SUS 18-8 3.2512 6.0452 Flat washer
78590
WF-05-EP
25 電解研磨 inch #5 SUS 18-8 3.2512 6.0452 Flat washer
78591
WF-05-K
60 Nickel coat inch #5 SUS 18-8 3.2512 6.0452 Flat washer
78592
WF-06
120 Nothing inch #6 SUS 18-8 3.6322 6.7818 Flat washer
78593
WF-06-A
30 Silver-coated inch #6 SUS 18-8 3.6322 6.7818 Flat washer
78594
WF-06-AU
25 Gold-coated inch #6 SUS 18-8 3.6322 6.7818 Flat washer
78595
WF-06-C
70 Molybdenum disulfide coat inch #6 SUS 18-8 3.6322 6.7818 Flat washer
78596
WF-06-EP
25 電解研磨 inch #6 SUS 18-8 3.6322 6.7818 Flat washer
78597
WF-06-K
50 Nickel coat inch #6 SUS 18-8 3.6322 6.7818 Flat washer
78598
WF-06-W
25 Tungsten Court inch #6 SUS 18-8 3.6322 6.7818 Flat washer
78599
WF-08
140 Nothing inch #8 SUS 18-8 4.2926 7.7216 Flat washer
78600
WF-08-A
30 Silver-coated inch #8 SUS 18-8 4.2926 7.7216 Flat washer
78601
WF-08-AU
25 Gold-coated inch #8 SUS 18-8 4.2926 7.7216 Flat washer
78602
WF-08-C
80 Molybdenum disulfide coat inch #8 SUS 18-8 4.2926 7.7216 Flat washer
78603
WF-08-EP
25 電解研磨 inch #8 SUS 18-8 4.2926 7.7216 Flat washer
78604
WF-08-K
50 Nickel coat inch #8 SUS 18-8 4.2926 7.7216 Flat washer
78605
WF-08-W
25 Tungsten Court inch #8 SUS 18-8 4.2926 7.7216 Flat washer
78606
WF-10
120 Nothing inch #10 SUS 18-8 4.953 8.9916 Flat washer
78607
WF-10-A
30 Silver-coated inch #10 SUS 18-8 4.953 8.9916 Flat washer
78608
WF-10-AU
25 Gold-coated inch #10 SUS 18-8 4.953 8.9916 Flat washer
78609
WF-10-C
70 Molybdenum disulfide coat inch #10 SUS 18-8 4.953 8.9916 Flat washer
78610
WF-10-EP
25 電解研磨 inch #10 SUS 18-8 4.953 8.9916 Flat washer
78611
WF-10-K
50 Nickel coat inch #10 SUS 18-8 4.953 8.9916 Flat washer
78612
WF-10-W
25 Tungsten Court inch #10 SUS 18-8 4.953 8.9916 Flat washer
78613
WF-25
100 pcs. Nothing inch 1/4 SUS 18-8 6.477 11.8872 Flat washer
78614
WF-25-A
25 Silver-coated inch 1/4 SUS 18-8 6.477 11.8872 Flat washer
78615
WF-25-AU
25 Silver-coated inch 1/4 SUS 18-8 6.477 11.8872 Flat washer
78616
WF-25-C
60 Molybdenum disulfide coat inch 1/4 SUS 18-8 6.477 11.8872 Flat washer
78617
WF-25-EP
25 電解研磨 inch 1/4 SUS 18-8 6.477 11.8872 Flat washer
78618
WF-25-K
40 Nickel coat inch 1/4 SUS 18-8 6.477 11.8872 Flat washer
78619
WF-25-W
25 Tungsten Court inch 1/4 SUS 18-8 6.477 11.8872 Flat washer
78620
WF-31
100 pcs. Nothing inch 5/16 SUS 18-8 8.3312 14.2748 Flat washer
78621
WF-31-A
25 Silver-coated inch 5/16 SUS 18-8 8.3312 14.2748 Flat washer
78622
WF-31-C
60 Molybdenum disulfide coat inch 5/16 SUS 18-8 8.3312 14.2748 Flat washer
78623
WF-31-EP
25 電解研磨 inch 5/16 SUS 18-8 8.3312 14.2748 Flat washer
78624
WF-31-K
25 Nickel coat inch 5/16 SUS 18-8 8.3312 14.2748 Flat washer
78625
WF-31-W
25 Tungsten Court inch 5/16 SUS 18-8 8.3312 14.2748 Flat washer
78626
WF-38
130 Nothing inch 3/8 SUS 18-8 9.906 15.875 Flat washer
78627
WF-38-A
25 Silver-coated inch 3/8 SUS 18-8 9.906 15.875 Flat washer
78628
WF-38-C
70 Molybdenum disulfide coat inch 3/8 SUS 18-8 9.906 15.875 Flat washer
78629
WF-38-K
25 Nickel coat inch 3/8 SUS 18-8 9.906 15.875 Flat washer
78630
WF-38-W
25 Tungsten Court inch 3/8 SUS 18-8 9.906 15.875 Flat washer
78631
WF-50
90 Nothing inch 1/2 SUS 18-8 13.081 22.225 Flat washer
78632
WF-50-A
25 Silver-coated inch 1/2 SUS 18-8 13.081 22.225 Flat washer
78633
WF-50-C
60 Molybdenum disulfide coat inch 1/2 SUS 18-8 13.081 22.225 Flat washer
78634
WF-50-K
25 Nickel coat inch 1/2 SUS 18-8 13.081 22.225 Flat washer
78635
WF-50-W
25 Tungsten Court inch 1/2 SUS 18-8 13.081 22.225 Flat washer
Minimum order Processing method Inch / mm size Material Inside diameter (mm) The outer diameter (mm) type
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