Screws & Fasteners – Mouser Finland

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Self-Sealing Hardware

APM HEXSEAL Self-Sealing Hardware features fasteners and washers, including SEELSKREWS®, SEELBOLTS®, SEELNUTS®, and SEELOC® WASHERS. This reusable hardware offers positive sealing under pressure or vacuum and resists loosening due to vibration. Optional O-ring seal materials assure performance with a wide variety of gasses and liquids. APM HEXSEAL Self-Sealing Hardware is easy to install, compatible with all surface finishes, and tested and listed to UL Standard 50, Types 1-13.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Type	Thread Size	Length	Material	Plating	Screw Head
Screws & Fasteners M2.5X6MM, Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw RM2.5x6MM 2701 APM HEXSEAL 1: 0,86 € 5 561In Stock	Mfr. Part No. RM2.5x6MM 2701 Mouser Part No 608-RM2.5X6MM2701	APM HEXSEAL	Screws & Fasteners M2.5X6MM, Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw		5 561In Stock	0,86 € 0,668 € 0,521 € 0,501 € View 0,475 € 0,452 € 0,437 € 0,42 €	Min.: 1 Mult.: 1			M2.5	6 mm
Screws & Fasteners SEELSKREW FH REC 4-40 THD 5/16 SFR4-40X5/16 2701 APM HEXSEAL 1: 0,757 € 4 218In Stock	Mfr. Part No. SFR4-40X5/16 2701 Mouser Part No 608-SFR440X5162701	APM HEXSEAL	Screws & Fasteners SEELSKREW FH REC 4-40 THD 5/16 Learn More about APM HEXSEAL self sealing hardware		4 218In Stock	0,757 € 0,581 € 0,529 € 0,466 € View 0,452 € 0,405 € 0,396 €	Min.: 1 Mult.: 1	Screws	Self Sealing	4-40	5/16 in	Stainless Steel		Phillips
Screws & Fasteners SEELSKREW STD PH REC 4-40 THD 3/16"LG R4-40X3/16 2701 APM HEXSEAL 1: 0,757 € 7 901In Stock	Mfr. Part No. R4-40X3/16 2701 Mouser Part No 608-R4-40X3/162701	APM HEXSEAL	Screws & Fasteners SEELSKREW STD PH REC 4-40 THD 3/16"LG		7 901In Stock	0,757 € 0,599 € 0,507 € 0,466 € View 0,431 € 0,409 € 0,388 € 0,377 € 0,359 €	Min.: 1 Mult.: 1	Screws	Self Sealing	4-40	3/16 in	Stainless Steel		Phillips
Screws & Fasteners 4-40X5/16", Phillips Pan Head, 18-8 Stainless Steel with Fluoro-Silicone O-Ring, Seal Screw R4-40X5/16 2615 APM HEXSEAL 1: 0,851 € 6 150In Stock	Mfr. Part No. R4-40X5/16 2615 Mouser Part No 608-R4-40X5/162615	APM HEXSEAL	Screws & Fasteners 4-40X5/16", Phillips Pan Head, 18-8 Stainless Steel with Fluoro-Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	6 150In Stock	0,851 € 0,667 € 0,61 € 0,539 € View 0,501 € 0,475 € 0,452 € 0,437 € 0,42 €	Min.: 1 Mult.: 1	Screws	Self Sealing	4-40	5/16 in	Stainless Steel	Passivated	Phillips
Screws & Fasteners 2-562X3/4", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R2-56X3/4 2701 APM HEXSEAL 1: 1,02 € 297In Stock	Mfr. Part No. R2-56X3/4 2701 Mouser Part No 608-R2-56X3/4	APM HEXSEAL	Screws & Fasteners 2-562X3/4", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware		297In Stock	1,02 € 0,802 € 0,615 € 0,607 € View 0,59 € 0,574 € 0,564 € 0,553 €	Min.: 1 Mult.: 1	Screws	Self Sealing	2-56	3/4 in	Stainless Steel	Passivated	Phillips
Screws & Fasteners 2-562X5/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R2-56X5/16 2701 APM HEXSEAL 1: 1,02 € 1 060In Stock	Mfr. Part No. R2-56X5/16 2701 Mouser Part No 608-R2-56X5/16	APM HEXSEAL	Screws & Fasteners 2-562X5/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	1 060In Stock	1,02 € 0,802 € 0,732 € 0,648 € View 0,607 € 0,59 € 0,574 € 0,564 € 0,553 €	Min.: 1 Mult.: 1	Screws	Self Sealing	2-56	5/16 in	Stainless Steel	Passivated	Phillips
Screws & Fasteners METRIC PAN HEAD WITH SLOTTED DRIVE 6MM SM3X6MM-2701 APM HEXSEAL 1: 0,654 € 1 721In Stock	Mfr. Part No. SM3X6MM-2701 Mouser Part No 608-SM3X6MM-2701	APM HEXSEAL	Screws & Fasteners METRIC PAN HEAD WITH SLOTTED DRIVE 6MM Learn More about APM HEXSEAL self sealing hardware		1 721In Stock	0,654 € 0,51 € 0,465 € 0,41 € View 0,402 € 0,359 € 0,35 €	Min.: 1 Mult.: 1	Screws	Self Sealing	M3	6 mm	Stainless Steel	Passivated	Slotted
Screws & Fasteners SEELSKREW MT PH SLOT M3 X .5 THD 20MM SM3X20MM-2701 APM HEXSEAL 1: 0,886 € 279In Stock 550Expected 13/11/2026	Mfr. Part No. SM3X20MM-2701 Mouser Part No 608-SM3X20MM-2701	APM HEXSEAL	Screws & Fasteners SEELSKREW MT PH SLOT M3 X .5 THD 20MM Learn More about APM HEXSEAL self sealing hardware		279In Stock 550Expected 13/11/2026	0,886 € 0,691 € 0,537 € 0,526 € View 0,511 € 0,498 € 0,489 € 0,48 €	Min.: 1 Mult.: 1	Screws	Self Sealing	M3	20 mm	Stainless Steel	Passivated	Slotted
Screws & Fasteners S/6-32X1/4 2701 APM HEXSEAL 1: 0,636 € 146In Stock	Mfr. Part No. S/6-32X1/4 2701 Mouser Part No 608-S/6-32X1/4	APM HEXSEAL	Screws & Fasteners Learn More about APM HEXSEAL self sealing hardware		146In Stock	0,636 € 0,454 € 0,414 € 0,363 € View 0,335 € 0,326 € 0,303 € 0,295 € 0,286 €	Min.: 1 Mult.: 1	Screws	Self Sealing	6-32	1/4 in	Stainless Steel	Passivated	Slotted
Screws & Fasteners SFR4-40 x 3/8 2701 APM HEXSEAL 1: 0,628 € 3 957In Stock	Mfr. Part No. SFR4-40 x 3/8 2701 Mouser Part No 608-SFR4-40X3-82701	APM HEXSEAL	Screws & Fasteners		3 957In Stock	0,628 € 0,487 € 0,468 € 0,364 € 0,347 €	Min.: 1 Mult.: 1	Screws	Self Sealing	4-40	3/8 in	Stainless Steel		Phillips
Screws & Fasteners SEELSKREW MT PH SLOT M3 X .5 THD 12MM SM3X12MM-2701 APM HEXSEAL 1: 0,697 € 511In Stock 1 000Expected 13/11/2026	Mfr. Part No. SM3X12MM-2701 Mouser Part No 608-SM3X12MM-2701	APM HEXSEAL	Screws & Fasteners SEELSKREW MT PH SLOT M3 X .5 THD 12MM Learn More about APM HEXSEAL self sealing hardware		511In Stock 1 000Expected 13/11/2026	0,697 € 0,624 € 0,357 € 0,347 € 0,304 €	Min.: 1 Mult.: 1	Screws	Self Sealing	M3	12 mm	Stainless Steel	Passivated	Slotted
Screws & Fasteners SEELSKREW STD PH REC 1/4-20 THD 1" LG R1/4-20X1 APM HEXSEAL 1: 1,98 € 25In Stock	Mfr. Part No. R1/4-20X1 Mouser Part No 608-R1/4-20X1	APM HEXSEAL	Screws & Fasteners SEELSKREW STD PH REC 1/4-20 THD 1" LG Learn More about APM HEXSEAL self sealing hardware		25In Stock	1,98 € 1,57 € 1,32 € 1,24 € View 1,15 € 1,10 € 1,06 € 1,02 € 0,98 €	Min.: 1 Mult.: 1	Screws	Self Sealing	1/4-20	1 in	Stainless Steel	Passivated	Phillips
Screws & Fasteners 10-32X7/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R10-32X7/8 2701 APM HEXSEAL 1: 1,28 € 25In Stock	Mfr. Part No. R10-32X7/8 2701 Mouser Part No 608-R10-32X7/8	APM HEXSEAL	Screws & Fasteners 10-32X7/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	25In Stock	1,28 € 1,03 € 0,869 € 0,808 € 0,567 €	Min.: 1 Mult.: 1	Screws	Self Sealing	10-32	7/8 in	Stainless Steel	Passivated	Phillips
Screws & Fasteners R8-32x3/16 2701 APM HEXSEAL 1: 0,851 € 90In Stock	Mfr. Part No. R8-32x3/16 2701 Mouser Part No 608-R8-32X3/162701	APM HEXSEAL	Screws & Fasteners		90In Stock	0,851 € 0,663 € 0,605 € 0,533 € View 0,494 € 0,467 € 0,444 € 0,431 € 0,411 €	Min.: 1 Mult.: 1	Screws	Self Sealing	8-32	3/16 in	Stainless Steel		Phillips
Screws & Fasteners SCR PAN STL sT m3X25 PHIL SELF SEAL RM3X25MM 2701 APM HEXSEAL 1: 1,63 € 253In Stock 470On Order	Mfr. Part No. RM3X25MM 2701 Mouser Part No 608-RM3X25MM2701	APM HEXSEAL	Screws & Fasteners SCR PAN STL sT m3X25 PHIL SELF SEAL		253In Stock 470On Order On Order Ship Dates Mfr. No: RM3X25MM 2701 Stock: 253 Can Dispatch Immediately On Order: 20 Pending 450 Expected 20/11/2026 Factory Lead Time: 6 Weeks	1,63 € 1,32 € 1,11 € 1,03 € 0,757 €	Min.: 1 Mult.: 1	Screws	Screw	M3	25 mm	Steel		Phillips
Screws & Fasteners SFR4-40 x 3/8 2615 APM HEXSEAL 1: 0,929 € 64In Stock 1 000Expected 09/11/2026	Mfr. Part No. SFR4-40 x 3/8 2615 Mouser Part No 608-SFR4-40X382615	APM HEXSEAL	Screws & Fasteners		64In Stock 1 000Expected 09/11/2026	0,929 € 0,728 € 0,665 € 0,588 € View 0,545 € 0,518 € 0,493 € 0,476 € 0,458 €	Min.: 1 Mult.: 1	Screws	Self Sealing	4-40	3/8 in	Stainless Steel		Phillips
Screws & Fasteners SEELSKREW MT PH SLOT M3 X .5 THD 8MM SM3X8MM-2701 APM HEXSEAL 1: 0,654 € 159In Stock	Mfr. Part No. SM3X8MM-2701 Mouser Part No 608-SM3X8MM-2701	APM HEXSEAL	Screws & Fasteners SEELSKREW MT PH SLOT M3 X .5 THD 8MM		159In Stock	0,654 € 0,51 € 0,465 € 0,41 € View 0,379 € 0,359 € 0,341 € 0,331 € 0,291 €	Min.: 1 Mult.: 1	Screws	Self Sealing					Slotted
Screws & Fasteners 2-562X3/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R2-56X3/8 2701 APM HEXSEAL 1: 1,02 € 237In Stock	Mfr. Part No. R2-56X3/8 2701 Mouser Part No 608-R2-56X3/8	APM HEXSEAL	Screws & Fasteners 2-562X3/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	237In Stock	1,02 € 0,827 € 0,702 € 0,648 € View 0,563 € 0,47 €	Min.: 1 Mult.: 1	Screws	Self Sealing	2-56	3/8 in	Stainless Steel	Passivated	Phillips
Screws & Fasteners SFR832X3/8 2701 APM HEXSEAL 1: 0,774 € 100In Stock	Mfr. Part No. SFR832X3/8 2701 Mouser Part No 608-SFR832X3/8	APM HEXSEAL	Screws & Fasteners		100In Stock	0,774 € 0,603 € 0,506 € 0,494 € View 0,474 € 0,46 € 0,449 € 0,442 € 0,43 €	Min.: 1 Mult.: 1	Screws	Screw	8-32	3/8 in	Steel	Passivated	Phillips
Screws & Fasteners 1/4-20X1" 18-8 Stainless Steel Self-Seal Silicone O-Ring, Hex Cap Screw ST1/4-20X1 2701 APM HEXSEAL 1: 2,81 € 23In Stock 50Expected 04/12/2026	Mfr. Part No. ST1/4-20X1 2701 Mouser Part No 608-ST1/4-20X1	APM HEXSEAL	Screws & Fasteners 1/4-20X1" 18-8 Stainless Steel Self-Seal Silicone O-Ring, Hex Cap Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	23In Stock 50Expected 04/12/2026	2,81 € 2,24 € 1,75 € 1,74 € View 1,69 € 1,65 € 1,62 € 1,58 €	Min.: 1 Mult.: 1	Bolts	Self Sealing	1/4-20	1 in	Steel	Passivated	Hex
Screws & Fasteners 4-40X9/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R4-40X9/16 2701 APM HEXSEAL 1: 0,843 € 3 230In Stock	Mfr. Part No. R4-40X9/16 2701 Mouser Part No 608-R4-40X9/16	APM HEXSEAL	Screws & Fasteners 4-40X9/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	3 230In Stock	0,843 € 0,65 € 0,541 € 0,506 € View 0,483 € 0,458 € 0,434 € 0,421 € 0,402 €	Min.: 1 Mult.: 1	Screws	Self Sealing	4-40	9/16 in	Stainless Steel	Passivated	Phillips
Screws & Fasteners 10-24X5/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R10-24X5/8 2701 APM HEXSEAL 1: 1,11 € 20In Stock	Mfr. Part No. R10-24X5/8 2701 Mouser Part No 608-R10-24X5/8	APM HEXSEAL	Screws & Fasteners 10-24X5/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware		20In Stock	1,11 € 0,894 € 0,759 € 0,703 € 0,483 €	Min.: 1 Mult.: 1	Screws	Self Sealing	10-24	5/8 in	Stainless Steel	Passivated	Phillips
Screws & Fasteners 10-24X7/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R10-24X7/8 2701 APM HEXSEAL 1: 1,28 € 27In Stock	Mfr. Part No. R10-24X7/8 2701 Mouser Part No 608-R10-24X7/8	APM HEXSEAL	Screws & Fasteners 10-24X7/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	27In Stock	1,28 € 1,03 € 0,869 € 0,808 € 0,567 €	Min.: 1 Mult.: 1	Screws	Self Sealing	10-24	7/8 in	Stainless Steel	Passivated	Phillips
Screws & Fasteners 2-562X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R2-56X1 2701 APM HEXSEAL 1: 1,02 € 16In Stock	Mfr. Part No. R2-56X1 2701 Mouser Part No 608-R2-56X1	APM HEXSEAL	Screws & Fasteners 2-562X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware		16In Stock	1,02 € 0,802 € 0,615 € 0,607 € View 0,59 € 0,574 € 0,564 € 0,553 €	Min.: 1 Mult.: 1	Screws	Self Sealing	2-56	1 in	Stainless Steel	Passivated	Phillips
Screws & Fasteners SEELSKREW FLATHEAD W/SILICON RBR O-RING SFR8-32X3/4-2701 APM HEXSEAL 1: 0,963 € 54In Stock	Mfr. Part No. SFR8-32X3/4-2701 Mouser Part No 608-SFR8-32X3/4-2701	APM HEXSEAL	Screws & Fasteners SEELSKREW FLATHEAD W/SILICON RBR O-RING		54In Stock	0,963 € 0,756 € 0,691 € 0,584 € View 0,574 € 0,559 € 0,544 € 0,534 € 0,524 €	Min.: 1 Mult.: 1	O-Rings