Standoffs & Spacers – Mouser Ireland

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SMTSO ReelFast Steel Nuts & Spacers/Standoffs

PEM SMTSO™ ReelFast® Steel Nuts and Spacers/Standoffs mount on PC boards in the same manner and at the same time as other surface-mount components, reducing product handling as well as the risk of board damage. The SMTSO modules simply become another board component. This process also results in faster assembly. They are available in a thread size as small as M1 / #0 to #80 and a minimum sheet thickness of 0.5mm / .020". PEM SMTSO ReelFast Steel Nuts and Spacers/Standoffs are RoHS compliant and are available in threaded or unthreaded versions.

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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	Packaging
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M1.6-3ET PEM 1: €0.74 69,876In Stock 142,000On Order	Mfr. Part No. SMTSO-M1.6-3ET Mouser Part No 153-SMTSO-M1.6-3ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	69,876In Stock 142,000On Order On Order Ship Dates Mfr. No: SMTSO-M1.6-3ET Stock: 69,876 Can Dispatch Immediately On Order: 2,000 Pending 20,000 Expected 23/11/2026 62,000 Expected 09/12/2026 58,000 Expected 04/01/2027 Factory Lead Time: 10 Weeks	Cut Tape €0.74 €0.555 €0.432 €0.407 Reel €0.385 View €0.398 €0.372 €0.359 €0.353 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Standoffs	SMT	M1.6	3 mm	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M2-3ET PEM 1: €0.946 67,575In Stock 90,000Expected 24/02/2027	Mfr. Part No. SMTSO-M2-3ET Mouser Part No 153-SMTSO-M2-3ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	67,575In Stock 90,000Expected 24/02/2027	Cut Tape €0.946 €0.702 €0.552 Reel €0.469 €0.452 €0.445 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Standoffs	SMT	M2	3 mm	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF, M2.5 SMTSO-M25-3ET PEM 1: €0.929 59,113In Stock 45,250On Order	Mfr. Part No. SMTSO-M25-3ET Mouser Part No 153-SMTSO-M25-3ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF, M2.5 Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	59,113In Stock 45,250On Order On Order Ship Dates Mfr. No: SMTSO-M25-3ET Stock: 59,113 Can Dispatch Immediately On Order: 34,000 Expected 12/11/2026 11,250 Expected 19/11/2026 Factory Lead Time: 16 Weeks	Cut Tape €0.929 €0.699 €0.544 €0.513 Reel €0.501 View €0.485 €0.468 €0.452 €0.445 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Standoffs	SMT	M2.5	3 mm	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF, 2-56 SMTSO-256-2ET PEM 1: €0.74 80,908In Stock	Mfr. Part No. SMTSO-256-2ET Mouser Part No 153-SMTSO-256-2ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF, 2-56 Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	80,908In Stock	Cut Tape €0.74 €0.557 €0.433 €0.409 Reel €0.386 View €0.40 €0.373 €0.359 €0.354 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	Standoffs	SMT	2-56	0.062 in	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-4.2-6ET PEM 1: €1.20 25,924In Stock	Mfr. Part No. SMTSO-4.2-6ET Mouser Part No 153-SMTSO-4.2-6ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	25,924In Stock	Cut Tape €1.20 €0.886 €0.694 Reel €0.654 €0.641 View €0.619 €0.598 €0.576 Quote MouseReel Available	Min.: 1 Mult.: 1 : 500	Standoffs	SMT		0.187 in			Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M2-4ET PEM 1: €1.02 36,060In Stock	Mfr. Part No. SMTSO-M2-4ET Mouser Part No 153-SMTSO-M2-4ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	36,060In Stock	Cut Tape €1.02 €0.765 €0.595 €0.562 Reel €0.55 View €0.531 €0.513 €0.495 €0.487	Min.: 1 Mult.: 1 : 900	Standoffs	SMT	M2	4 mm	Steel	Zinc	Reel, Cut Tape
Standoffs & Spacers SURFACE MOUNT STANDOFF, 4-40 SMTSO-440-4ET PEM 1: €0.937 55,251In Stock 95,000Expected 05/02/2027	Mfr. Part No. SMTSO-440-4ET Mouser Part No 153-SMTSO-440-4ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF, 4-40 Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	55,251In Stock 95,000Expected 05/02/2027	Cut Tape €0.937 €0.701 €0.545 €0.514 Reel €0.503 View €0.486 €0.47 €0.452 €0.445 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Standoffs	SMT	4-40	0.125 in	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers MOUNT STANDOFF SMTSO-M1.6-2ET PEM 1: €0.74 153,866In Stock 65,923On Order	Mfr. Part No. SMTSO-M1.6-2ET Mouser Part No 153-SMTSO-M1.6-2ET	PEM	Standoffs & Spacers MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	153,866In Stock 65,923On Order On Order Ship Dates Mfr. No: SMTSO-M1.6-2ET Stock: 153,866 Can Dispatch Immediately On Order: 2,500 Pending 15,000 Expected 16/11/2026 48,423 Expected 19/11/2026 Factory Lead Time: 20 Weeks	Cut Tape €0.74 €0.554 €0.431 €0.407 Reel €0.384 View €0.397 €0.371 €0.358 €0.353 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Standoffs	SMT	M1.6	2 mm	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF, 4-40 SMTSO-440-2ET PEM 1: €0.731 181,652In Stock	Mfr. Part No. SMTSO-440-2ET Mouser Part No 153-SMTSO-440-2ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF, 4-40 Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	181,652In Stock	Cut Tape €0.731 €0.551 €0.429 €0.404 Reel €0.382 View €0.396 €0.369 €0.356 €0.351 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	Standoffs	SMT	4-40	0.062 in	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M3-2ET PEM 1: €0.731 97,045In Stock 280,500Expected 23/11/2026	Mfr. Part No. SMTSO-M3-2ET Mouser Part No 153-SMTSO-M3-2ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	97,045In Stock 280,500Expected 23/11/2026	Cut Tape €0.731 €0.551 €0.429 €0.404 Reel €0.382 View €0.396 €0.369 €0.356 €0.351 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	Standoffs	SMT	M3	2 mm	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SMTSO, M3, THRU-HOLE, CRS, ET SMTSO-M3-4ET PEM 1: €0.92 146,718In Stock 123,300Expected 27/01/2027	Mfr. Part No. SMTSO-M3-4ET Mouser Part No 153-SMTSO-M3-4ET	PEM	Standoffs & Spacers SMTSO, M3, THRU-HOLE, CRS, ET Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	146,718In Stock 123,300Expected 27/01/2027	Cut Tape €0.92 €0.691 €0.538 €0.507 Reel €0.495 View €0.479 €0.463 €0.446 €0.439 MouseReel Available	Min.: 1 Mult.: 1 : 900	Standoffs	SMT	M3	4 mm	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M4-2ET PEM 1: €0.851 42,392In Stock	Mfr. Part No. SMTSO-M4-2ET Mouser Part No 153-SMTSO-M4-2ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	42,392In Stock	Cut Tape €0.851 €0.64 €0.498 €0.47 Reel €0.459 View €0.444 €0.429 €0.414 €0.408 MouseReel Available	Min.: 1 Mult.: 1 : 1,100	Standoffs	SMT	M4	2 mm	Steel	Tin	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-440-12ET PEM 1: €1.09 133,588In Stock 15,725On Order	Mfr. Part No. SMTSO-440-12ET Mouser Part No 153-SMTSO-440-12ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	133,588In Stock 15,725On Order On Order Ship Dates Mfr. No: SMTSO-440-12ET Stock: 133,588 Can Dispatch Immediately On Order: 300 Pending 15,425 Expected 19/11/2026 Factory Lead Time: 14 Weeks	Cut Tape €1.09 €0.817 €0.636 Reel €0.599 €0.587 View €0.567 €0.547 €0.527 Quote MouseReel Available	Min.: 1 Mult.: 1 : 300	Standoffs	SMT	4-40	0.375 in	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M2-2ET PEM 1: €0.74 104,464In Stock 151,500On Order	Mfr. Part No. SMTSO-M2-2ET Mouser Part No 153-SMTSO-M2-2ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	104,464In Stock 151,500On Order On Order Ship Dates Mfr. No: SMTSO-M2-2ET Stock: 104,464 Can Dispatch Immediately On Order: 51,000 Expected 25/11/2026 100,500 Expected 09/12/2026 Factory Lead Time: 15 Weeks	Cut Tape €0.74 €0.549 €0.427 €0.403 Reel €0.38 View €0.395 €0.367 €0.354 €0.349 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	Standoffs	SMT	M2	2 mm	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SMT STANDOFF, M3 SMTSO-M3-6ET PEM 1: €1.05 41,231In Stock 154,050On Order	Mfr. Part No. SMTSO-M3-6ET Mouser Part No 153-SMTSO-M3-6ET	PEM	Standoffs & Spacers SMT STANDOFF, M3 Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	41,231In Stock 154,050On Order On Order Ship Dates Mfr. No: SMTSO-M3-6ET Stock: 41,231 Can Dispatch Immediately On Order: 650 Pending 69,550 Expected 19/11/2026 83,850 Expected 03/02/2027 Factory Lead Time: 15 Weeks	Cut Tape €1.05 €0.789 €0.614 Reel €0.579 €0.566 View €0.547 €0.528 €0.509 Quote MouseReel Available	Min.: 1 Mult.: 1 : 650	Standoffs	SMT	M3	6 mm	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-256-4ET PEM 1: €0.989 54,088In Stock	Mfr. Part No. SMTSO-256-4ET Mouser Part No 153-SMTSO-256-4ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	54,088In Stock	Cut Tape €0.989 €0.739 €0.575 €0.543 Reel €0.531 View €0.513 €0.495 €0.477 €0.47 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Standoffs	SMT	2-56	0.125 in	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-632-2ET PEM 1: €0.894 34,360In Stock 25,500Expected 19/11/2026	Mfr. Part No. SMTSO-632-2ET Mouser Part No 153-SMTSO-632-2ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	34,360In Stock 25,500Expected 19/11/2026	Cut Tape €0.894 €0.668 €0.519 €0.49 Reel €0.464 View €0.479 €0.447 €0.432 €0.425 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	Standoffs	SMT	6-32	0.062 in	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF, M2.5 SMTSO-M25-4ET PEM 1: €1.01 28,594In Stock 23,400Expected 23/12/2026	Mfr. Part No. SMTSO-M25-4ET Mouser Part No 153-SMTSO-M25-4ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF, M2.5 Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	28,594In Stock 23,400Expected 23/12/2026	Cut Tape €1.01 €0.753 €0.587 €0.553 Reel €0.54 View €0.522 €0.504 €0.486 €0.479 MouseReel Available	Min.: 1 Mult.: 1 : 900	Standoffs	SMT	M2.5	4 mm	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-3.6-3ET PEM 1: €0.869 179,071In Stock 364,500On Order	Mfr. Part No. SMTSO-3.6-3ET Mouser Part No 153-SMTSO-3.6-3ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	179,071In Stock 364,500On Order On Order Ship Dates Mfr. No: SMTSO-3.6-3ET Stock: 179,071 Can Dispatch Immediately On Order: 5,000 Pending 7,500 Expected 18/11/2026 135,000 Expected 05/01/2027 216,000 Expected 24/03/2027 1,000 TBD Factory Lead Time: 23 Weeks	Cut Tape €0.869 €0.652 €0.507 €0.478 Reel €0.468 View €0.452 €0.437 €0.421 €0.415 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Standoffs	SMT			Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-3.6-6ET PEM 1: €0.972 54,834In Stock 73,450Expected 24/11/2026	Mfr. Part No. SMTSO-3.6-6ET Mouser Part No 153-SMTSO-3.6-6ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	54,834In Stock 73,450Expected 24/11/2026	Cut Tape €0.972 €0.721 €0.561 Reel €0.529 €0.517 View €0.50 €0.482 €0.465 €0.458 MouseReel Available	Min.: 1 Mult.: 1 : 650	Standoffs	SMT		0.187 in	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF, 4-40 SMTSO-440-8ET PEM 1: €1.12 96,354In Stock	Mfr. Part No. SMTSO-440-8ET Mouser Part No 153-SMTSO-440-8ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF, 4-40 Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	96,354In Stock	Cut Tape €1.12 €0.838 €0.652 Reel €0.615 €0.601 View €0.581 €0.562 €0.541 Quote MouseReel Available	Min.: 1 Mult.: 1 : 650	Standoffs	SMT	4-40	0.25 in	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-832-2ET PEM 1: €1.04 30,480In Stock 33,000Expected 28/12/2026	Mfr. Part No. SMTSO-832-2ET Mouser Part No 153-SMTSO-832-2ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	30,480In Stock 33,000Expected 28/12/2026	Cut Tape €1.04 €0.777 €0.605 €0.571 Reel €0.558 View €0.539 €0.521 €0.502 €0.495 MouseReel Available	Min.: 1 Mult.: 1 : 1,100	Standoffs	SMT	8-32	0.062 in			Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT NUT STANDOFF SPACER SMTSO-M2-10ET PEM 1: €1.28 26,539In Stock	Mfr. Part No. SMTSO-M2-10ET Mouser Part No 153-SMTSO-M2-10ET	PEM	Standoffs & Spacers SURFACE MOUNT NUT STANDOFF SPACER Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	26,539In Stock	Cut Tape €1.28 €0.955 €0.74 Reel €0.697 €0.682 View €0.659 €0.636 €0.613 Quote	Min.: 1 Mult.: 1 : 300	Standoffs	SMT	M2	10 mm			Reel, Cut Tape
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M2-6ET PEM 1: €1.31 27,595In Stock	Mfr. Part No. SMTSO-M2-6ET Mouser Part No 153-SMTSO-M2-6ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	27,595In Stock	Cut Tape €1.31 €0.972 €0.759 Reel €0.716 €0.70 View €0.677 €0.654 €0.63 Quote MouseReel Available	Min.: 1 Mult.: 1 : 650	Standoffs	SMT	M2	6 mm			Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M25-5ET PEM 1: €1.38 84,607In Stock 75,000Expected 24/02/2027	Mfr. Part No. SMTSO-M25-5ET Mouser Part No 153-SMTSO-M25-5ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	84,607In Stock 75,000Expected 24/02/2027	Cut Tape €1.38 €1.02 €0.796 €0.751 Reel €0.734 View €0.71 €0.685 €0.66 Quote MouseReel Available	Min.: 1 Mult.: 1 : 750	Standoffs	SMT	M2.5	5 mm			Reel, Cut Tape, MouseReel

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SMTSO ReelFast Steel Nuts & Spacers/Standoffs

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