Standoffs & Spacers – Mouser United Kingdom

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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 (GBP) 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: £0.646 80,624In Stock 140,000On 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	80,624In Stock 140,000On Order On Order Ship Dates Mfr. No: SMTSO-M1.6-3ET Stock: 80,624 Can Dispatch Immediately On Order: 20,000 Pending 62,000 Expected 09/12/2026 58,000 Expected 04/01/2027 Factory Lead Time: 10 Weeks	Cut Tape £0.646 £0.485 £0.377 £0.355 Reel £0.336 View £0.347 £0.325 £0.313 £0.308 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-256-4ET PEM 1: £0.863 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 £0.863 £0.645 £0.502 £0.474 Reel £0.464 View £0.448 £0.432 £0.416 £0.41 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-632-12ET PEM 1: £1.20 19,537In Stock	Mfr. Part No. SMTSO-632-12ET Mouser Part No 153-SMTSO-632-12ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	19,537In Stock	Cut Tape £1.20 £0.89 £0.698 Reel £0.657 £0.643 View £0.622 £0.60 £0.579 Quote MouseReel Available	Min.: 1 Mult.: 1 : 300	Standoffs	SMT	6-32	0.375 in	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-632-2ET PEM 1: £0.78 34,901In Stock 25,500Expected 16/11/2026	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	34,901In Stock 25,500Expected 16/11/2026	Cut Tape £0.78 £0.583 £0.453 £0.428 Reel £0.405 View £0.418 £0.39 £0.377 £0.371 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: £0.882 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 £0.882 £0.657 £0.512 £0.483 Reel £0.471 View £0.456 £0.44 £0.424 £0.418 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-440-12ET PEM 1: £0.952 118,338In Stock 31,200On 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	118,338In Stock 31,200On Order On Order Ship Dates Mfr. No: SMTSO-440-12ET Stock: 118,338 Can Dispatch Immediately On Order: 300 Pending 30,900 Expected 06/11/2026 Factory Lead Time: 14 Weeks	Cut Tape £0.952 £0.713 £0.555 Reel £0.523 £0.512 View £0.495 £0.478 £0.46 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: £0.646 110,074In 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	110,074In Stock 151,500On Order On Order Ship Dates Mfr. No: SMTSO-M2-2ET Stock: 110,074 Can Dispatch Immediately On Order: 51,000 Expected 25/11/2026 100,500 Expected 09/12/2026 Factory Lead Time: 15 Weeks	Cut Tape £0.646 £0.479 £0.373 £0.352 Reel £0.332 View £0.345 £0.32 £0.309 £0.305 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: £0.917 42,637In 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	42,637In Stock 154,050On Order On Order Ship Dates Mfr. No: SMTSO-M3-6ET Stock: 42,637 Can Dispatch Immediately On Order: 650 Pending 69,550 Expected 10/11/2026 83,850 Expected 03/02/2027 Factory Lead Time: 15 Weeks	Cut Tape £0.917 £0.689 £0.536 Reel £0.505 £0.494 View £0.478 £0.461 £0.444 Quote MouseReel Available	Min.: 1 Mult.: 1 : 650	Standoffs	SMT	M3	6 mm	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SMTSO-080-2ET PEM 1: £0.661 39,222In Stock 104,400Expected 10/03/2027	Mfr. Part No. SMTSO-080-2ET Mouser Part No 153-SMTSO-080-2ET	PEM	Standoffs & Spacers Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	39,222In Stock 104,400Expected 10/03/2027	Cut Tape £0.661 £0.489 £0.381 £0.359 Reel £0.34 View £0.351 £0.327 £0.315 £0.31 MouseReel Available	Min.: 1 Mult.: 1 : 2,900	Standoffs	SMT	0-80	0.062 in	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-3.6-3ET PEM 1: £0.759 125,171In Stock 426,000On 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	125,171In Stock 426,000On Order On Order Ship Dates Mfr. No: SMTSO-3.6-3ET Stock: 125,171 Can Dispatch Immediately On Order: 18,000 Expected 06/11/2026 56,000 Expected 17/11/2026 135,000 Expected 05/01/2027 216,000 Expected 24/03/2027 1,000 TBD Factory Lead Time: 23 Weeks	Cut Tape £0.759 £0.569 £0.443 £0.417 Reel £0.409 View £0.395 £0.382 £0.368 £0.362 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: £0.849 54,941In 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	54,941In Stock 73,450Expected 24/11/2026	Cut Tape £0.849 £0.629 £0.49 Reel £0.462 £0.451 View £0.437 £0.421 £0.406 £0.40 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: £0.978 97,019In 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	97,019In Stock	Cut Tape £0.978 £0.732 £0.569 Reel £0.537 £0.525 View £0.507 £0.491 £0.472 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: £0.908 30,580In 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	30,580In Stock 33,000Expected 28/12/2026	Cut Tape £0.908 £0.678 £0.528 £0.498 Reel £0.487 View £0.471 £0.455 £0.438 £0.432 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: £1.12 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 £1.12 £0.834 £0.646 Reel £0.608 £0.595 View £0.575 £0.555 £0.535 Quote	Min.: 1 Mult.: 1 : 300	Standoffs	SMT	M2	10 mm			Reel, Cut Tape
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M2-6ET PEM 1: £1.14 27,745In 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	27,745In Stock	Cut Tape £1.14 £0.849 £0.663 Reel £0.625 £0.611 View £0.591 £0.571 £0.55 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: £1.20 89,207In Stock	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	89,207In Stock	Cut Tape £1.20 £0.89 £0.695 £0.656 Reel £0.641 View £0.62 £0.598 £0.576 Quote MouseReel Available	Min.: 1 Mult.: 1 : 750	Standoffs	SMT	M2.5	5 mm			Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M3-3ET PEM 1: £0.773 288,457In Stock 3,733Expected 11/11/2026	Mfr. Part No. SMTSO-M3-3ET Mouser Part No 153-SMTSO-M3-3ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	288,457In Stock 3,733Expected 11/11/2026	Cut Tape £0.773 £0.582 £0.453 £0.427 Reel £0.418 View £0.404 £0.389 £0.376 £0.37 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Standoffs	SMT	M3	3 mm	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT NUT STANDOFF SPACER SMTSO-M3-5ET PEM 1: £1.04 24,239In Stock 24,750Expected 23/11/2026	Mfr. Part No. SMTSO-M3-5ET Mouser Part No 153-SMTSO-M3-5ET	PEM	Standoffs & Spacers SURFACE MOUNT NUT STANDOFF SPACER Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	24,239In Stock 24,750Expected 23/11/2026	Cut Tape £1.04 £0.773 £0.601 £0.566 Reel £0.553 View £0.534 £0.516 £0.498 Quote MouseReel Available	Min.: 1 Mult.: 1 : 750	Standoffs	SMT	M3	5 mm			Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M4-10ET PEM 1: £1.36 51,991In Stock 2,400On Order	Mfr. Part No. SMTSO-M4-10ET Mouser Part No 153-SMTSO-M4-10ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	51,991In Stock 2,400On Order	Cut Tape £1.36 £1.01 £0.788 Reel £0.744 £0.727 View £0.704 £0.679 £0.655 Quote MouseReel Available	Min.: 1 Mult.: 1 : 300	Standoffs	SMT	M4	10 mm			Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M2-3ET PEM 1: £0.826 68,723In Stock	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	68,723In Stock	Cut Tape £0.826 £0.613 £0.482 Reel £0.409 £0.395 £0.388 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: £0.811 39,938In Stock 70,000Expected 12/11/2026	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	39,938In Stock 70,000Expected 12/11/2026	Cut Tape £0.811 £0.61 £0.475 £0.448 Reel £0.437 View £0.423 £0.409 £0.395 £0.388 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, M2.5 SMTSO-M25-6ET PEM 1: £0.986 23,519In Stock 75,400On Order	Mfr. Part No. SMTSO-M25-6ET Mouser Part No 153-SMTSO-M25-6ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF, M2.5 Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	23,519In Stock 75,400On Order On Order Ship Dates Mfr. No: SMTSO-M25-6ET Stock: 23,519 Can Dispatch Immediately On Order: 30,550 Expected 23/11/2026 44,850 Expected 20/01/2027 Factory Lead Time: 15 Weeks	Cut Tape £0.986 £0.739 £0.575 Reel £0.542 £0.53 View £0.512 £0.495 £0.477 Quote MouseReel Available	Min.: 1 Mult.: 1 : 650	Standoffs	SMT	M2.5	6 mm	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF, 4-40 SMTSO-440-4ET PEM 1: £0.818 56,445In Stock	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	56,445In Stock	Cut Tape £0.818 £0.612 £0.476 £0.449 Reel £0.439 View £0.424 £0.41 £0.395 £0.388 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: £0.646 128,906In Stock 105,000On 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	128,906In Stock 105,000On Order On Order Ship Dates Mfr. No: SMTSO-M1.6-2ET Stock: 128,906 Can Dispatch Immediately On Order: 2,500 Expected 06/11/2026 102,500 Expected 16/11/2026 Factory Lead Time: 20 Weeks	Cut Tape £0.646 £0.484 £0.376 £0.355 Reel £0.335 View £0.347 £0.324 £0.313 £0.308 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: £0.638 183,490In 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	183,490In Stock	Cut Tape £0.638 £0.481 £0.375 £0.353 Reel £0.333 View £0.346 £0.322 £0.311 £0.306 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	Standoffs	SMT	4-40	0.062 in	Steel	Zinc	Reel, Cut Tape, MouseReel

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SMTSO ReelFast Steel Nuts & Spacers/Standoffs

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