Standoffs & Spacers – Mouser Peru

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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 (PEN) 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: S/ 3.35 82,489In Stock 140,000On Order	Mfr. Part # SMTSO-M1.6-3ET Mouser Part # 153-SMTSO-M1.6-3ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	82,489In Stock 140,000On Order On Order Ship Dates Mfr. #: SMTSO-M1.6-3ET Stock: 82,489 Can Ship Immediately On Order: 20,000 Pending 62,000 Expected 12/9/2026 58,000 Expected 1/4/2027 Factory Lead-Time: 10 Weeks	Cut Tape S/ 3.35 S/ 2.51 S/ 1.95 S/ 1.84 Reel S/ 1.74 View S/ 1.80 S/ 1.68 S/ 1.62 S/ 1.60 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-M25-10ET PEM 1: S/ 6.03 26,578In Stock	Mfr. Part # SMTSO-M25-10ET Mouser Part # 153-SMTSO-M25-10ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	26,578In Stock	Cut Tape S/ 6.03 S/ 4.52 S/ 3.60 Reel S/ 3.06 S/ 3.01 View S/ 2.90 Quote	Min.: 1 Mult.: 1 : 300	Standoffs	SMT	M2.5	10 mm			Reel, Cut Tape
Standoffs & Spacers SURFACE MOUNT STANDOFF, 2-56 SMTSO-256-2ET PEM 1: S/ 3.35 83,753In Stock	Mfr. Part # SMTSO-256-2ET Mouser Part # 153-SMTSO-256-2ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF, 2-56 Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	83,753In Stock	Cut Tape S/ 3.35 S/ 2.52 S/ 1.96 S/ 1.85 Reel S/ 1.75 View S/ 1.81 S/ 1.69 S/ 1.63 S/ 1.60 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-M2-4ET PEM 1: S/ 4.63 37,791In Stock	Mfr. Part # SMTSO-M2-4ET Mouser Part # 153-SMTSO-M2-4ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	37,791In Stock	Cut Tape S/ 4.63 S/ 3.46 S/ 2.69 S/ 2.54 Reel S/ 2.49 View S/ 2.40 S/ 2.32 S/ 2.24 Quote	Min.: 1 Mult.: 1 : 900	Standoffs	SMT	M2	4 mm	Steel	Zinc	Reel, Cut Tape
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M2-3ET PEM 1: S/ 4.28 83,820In Stock	Mfr. Part # SMTSO-M2-3ET Mouser Part # 153-SMTSO-M2-3ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	83,820In Stock	Cut Tape S/ 4.28 S/ 3.18 S/ 2.50 Reel S/ 2.12 S/ 2.05 Quote Quote 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: S/ 4.20 42,469In Stock 70,000Expected 11/12/2026	Mfr. Part # SMTSO-M25-3ET Mouser Part # 153-SMTSO-M25-3ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF, M2.5 Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	42,469In Stock 70,000Expected 11/12/2026	Cut Tape S/ 4.20 S/ 3.16 S/ 2.46 S/ 2.32 Reel S/ 2.27 View S/ 2.20 S/ 2.12 S/ 2.04 Quote 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: S/ 5.10 24,529In Stock 75,400On Order	Mfr. Part # SMTSO-M25-6ET Mouser Part # 153-SMTSO-M25-6ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF, M2.5 Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	24,529In Stock 75,400On Order On Order Ship Dates Mfr. #: SMTSO-M25-6ET Stock: 24,529 Can Ship Immediately On Order: 30,550 Expected 11/23/2026 44,850 Expected 1/11/2027 Factory Lead-Time: 13 Weeks	Cut Tape S/ 5.10 S/ 3.83 S/ 2.98 Reel S/ 2.81 S/ 2.75 View S/ 2.65 S/ 2.57 S/ 2.47 Quote MouseReel Available	Min.: 1 Mult.: 1 : 650	Standoffs	SMT	M2.5	6 mm	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SMTSO-080-2ET PEM 1: S/ 3.43 40,126In Stock 104,400Expected 3/10/2027	Mfr. Part # SMTSO-080-2ET Mouser Part # 153-SMTSO-080-2ET	PEM	Standoffs & Spacers Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	40,126In Stock 104,400Expected 3/10/2027	Cut Tape S/ 3.43 S/ 2.53 S/ 1.97 S/ 1.86 Reel S/ 1.76 View S/ 1.82 S/ 1.69 S/ 1.63 S/ 1.61 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: S/ 3.93 63,831In Stock 274,000On Order	Mfr. Part # SMTSO-3.6-3ET Mouser Part # 153-SMTSO-3.6-3ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	63,831In Stock 274,000On Order On Order Ship Dates Mfr. #: SMTSO-3.6-3ET Stock: 63,831 Can Ship Immediately On Order: 133,000 Expected 11/6/2026 135,000 Expected 1/5/2027 6,000 TBD Factory Lead-Time: 21 Weeks	Cut Tape S/ 3.93 S/ 2.95 S/ 2.30 S/ 2.16 Reel S/ 2.12 View S/ 2.05 S/ 1.98 S/ 1.91 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Standoffs	SMT			Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF, 4-40 SMTSO-440-8ET PEM 1: S/ 5.06 43,037In Stock 59,800Expected 11/4/2026	Mfr. Part # SMTSO-440-8ET Mouser Part # 153-SMTSO-440-8ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF, 4-40 Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	43,037In Stock 59,800Expected 11/4/2026	Cut Tape S/ 5.06 S/ 3.79 S/ 2.95 Reel S/ 2.78 S/ 2.72 View S/ 2.63 S/ 2.54 S/ 2.45 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: S/ 4.71 30,865In Stock 33,000Expected 12/28/2026	Mfr. Part # SMTSO-832-2ET Mouser Part # 153-SMTSO-832-2ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	30,865In Stock 33,000Expected 12/28/2026	Cut Tape S/ 4.71 S/ 3.52 S/ 2.74 S/ 2.58 Reel S/ 2.53 View S/ 2.44 S/ 2.36 S/ 2.27 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,100	Standoffs	SMT	8-32	0.062 in			Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M2-6ET PEM 1: S/ 5.92 31,684In Stock	Mfr. Part # SMTSO-M2-6ET Mouser Part # 153-SMTSO-M2-6ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	31,684In Stock	Cut Tape S/ 5.92 S/ 4.40 S/ 3.44 Reel S/ 3.24 S/ 3.17 View S/ 3.06 S/ 2.96 S/ 2.85 Quote MouseReel Available	Min.: 1 Mult.: 1 : 650	Standoffs	SMT	M2	6 mm			Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M3-3ET PEM 1: S/ 4.01 204,388In Stock 100,000Expected 11/4/2026	Mfr. Part # SMTSO-M3-3ET Mouser Part # 153-SMTSO-M3-3ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	204,388In Stock 100,000Expected 11/4/2026	Cut Tape S/ 4.01 S/ 3.02 S/ 2.35 S/ 2.21 Reel S/ 2.17 View S/ 2.09 S/ 2.02 S/ 1.95 Quote 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: S/ 5.37 29,789In Stock 24,750Expected 11/6/2026	Mfr. Part # SMTSO-M3-5ET Mouser Part # 153-SMTSO-M3-5ET	PEM	Standoffs & Spacers SURFACE MOUNT NUT STANDOFF SPACER Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	29,789In Stock 24,750Expected 11/6/2026	Cut Tape S/ 5.37 S/ 4.01 S/ 3.11 S/ 2.93 Reel S/ 2.86 View S/ 2.77 S/ 2.67 S/ 2.58 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: S/ 7.05 52,419In Stock 2,400On Order	Mfr. Part # SMTSO-M4-10ET Mouser Part # 153-SMTSO-M4-10ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	52,419In Stock 2,400On Order	Cut Tape S/ 7.05 S/ 5.25 S/ 4.09 Reel S/ 3.86 S/ 3.77 View S/ 3.65 S/ 3.52 S/ 3.39 Quote MouseReel Available	Min.: 1 Mult.: 1 : 300	Standoffs	SMT	M4	10 mm			Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF, 4-40 SMTSO-440-2ET PEM 1: S/ 3.31 85,552In Stock 105,000Expected 11/6/2026	Mfr. Part # SMTSO-440-2ET Mouser Part # 153-SMTSO-440-2ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF, 4-40 Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	85,552In Stock 105,000Expected 11/6/2026	Cut Tape S/ 3.31 S/ 2.50 S/ 1.94 S/ 1.83 Reel S/ 1.73 View S/ 1.79 S/ 1.67 S/ 1.61 S/ 1.59 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: S/ 3.31 183,185In Stock 280,500Expected 11/23/2026	Mfr. Part # SMTSO-M3-2ET Mouser Part # 153-SMTSO-M3-2ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	183,185In Stock 280,500Expected 11/23/2026	Cut Tape S/ 3.31 S/ 2.50 S/ 1.94 S/ 1.83 Reel S/ 1.73 View S/ 1.79 S/ 1.67 S/ 1.61 S/ 1.59 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: S/ 4.16 155,207In Stock 123,300Expected 1/27/2027	Mfr. Part # SMTSO-M3-4ET Mouser Part # 153-SMTSO-M3-4ET	PEM	Standoffs & Spacers SMTSO, M3, THRU-HOLE, CRS, ET Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	155,207In Stock 123,300Expected 1/27/2027	Cut Tape S/ 4.16 S/ 3.13 S/ 2.43 S/ 2.29 Reel S/ 2.24 View S/ 2.17 S/ 2.09 S/ 2.02 Quote 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: S/ 3.85 45,071In Stock	Mfr. Part # SMTSO-M4-2ET Mouser Part # 153-SMTSO-M4-2ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	45,071In Stock	Cut Tape S/ 3.85 S/ 2.90 S/ 2.25 S/ 2.13 Reel S/ 2.08 View S/ 2.01 S/ 1.94 S/ 1.87 S/ 1.85 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: S/ 4.94 74,024In Stock 81,300On Order	Mfr. Part # SMTSO-440-12ET Mouser Part # 153-SMTSO-440-12ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	74,024In Stock 81,300On Order On Order Ship Dates Mfr. #: SMTSO-440-12ET Stock: 74,024 Can Ship Immediately On Order: 300 Pending 81,000 Expected 11/6/2026 Factory Lead-Time: 13 Weeks	Cut Tape S/ 4.94 S/ 3.70 S/ 2.88 Reel S/ 2.71 S/ 2.65 View S/ 2.57 S/ 2.48 S/ 2.39 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-M1.6-1ET PEM 1: S/ 3.62 34,906In Stock 42,000Expected 11/24/2026	Mfr. Part # SMTSO-M1.6-1ET Mouser Part # 153-SMTSO-M1.6-1ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	34,906In Stock 42,000Expected 11/24/2026	Cut Tape S/ 3.62 S/ 2.71 S/ 2.11 S/ 1.99 Reel S/ 1.88 View S/ 1.94 S/ 1.81 S/ 1.75 S/ 1.72 MouseReel Available	Min.: 1 Mult.: 1 : 3,500	Standoffs	SMT	M1.6	1 mm	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-M2-2ET PEM 1: S/ 3.35 39,867In Stock 232,540On Order	Mfr. Part # SMTSO-M2-2ET Mouser Part # 153-SMTSO-M2-2ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	39,867In Stock 232,540On Order On Order Ship Dates Mfr. #: SMTSO-M2-2ET Stock: 39,867 Can Ship Immediately On Order: 81,040 Expected 10/27/2026 51,000 Expected 11/25/2026 100,500 Expected 12/9/2026 Factory Lead-Time: 13 Weeks	Cut Tape S/ 3.35 S/ 2.48 S/ 1.93 S/ 1.83 Reel S/ 1.72 View S/ 1.79 S/ 1.66 S/ 1.60 S/ 1.58 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: S/ 4.75 47,988In Stock 154,050On Order	Mfr. Part # SMTSO-M3-6ET Mouser Part # 153-SMTSO-M3-6ET	PEM	Standoffs & Spacers SMT STANDOFF, M3 Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	47,988In Stock 154,050On Order On Order Ship Dates Mfr. #: SMTSO-M3-6ET Stock: 47,988 Can Ship Immediately On Order: 650 Pending 69,550 Expected 11/12/2026 83,850 Expected 1/15/2027 Factory Lead-Time: 13 Weeks	Cut Tape S/ 4.75 S/ 3.57 S/ 2.78 Reel S/ 2.62 S/ 2.56 View S/ 2.48 S/ 2.39 S/ 2.30 Quote MouseReel Available	Min.: 1 Mult.: 1 : 650	Standoffs	SMT	M3	6 mm	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF, 4-40 SMTSO-440-4ET PEM 1: S/ 4.24 78,865In Stock	Mfr. Part # SMTSO-440-4ET Mouser Part # 153-SMTSO-440-4ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF, 4-40 Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	78,865In Stock	Cut Tape S/ 4.24 S/ 3.17 S/ 2.47 S/ 2.33 Reel S/ 2.28 View S/ 2.20 S/ 2.13 S/ 2.05 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Standoffs	SMT	4-40	0.125 in	Steel	Zinc	Reel, Cut Tape, MouseReel
Standoffs & Spacers SURFACE MOUNT STANDOFF SMTSO-256-4ET PEM 1: S/ 4.48 55,266In Stock	Mfr. Part # SMTSO-256-4ET Mouser Part # 153-SMTSO-256-4ET	PEM	Standoffs & Spacers SURFACE MOUNT STANDOFF Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	55,266In Stock	Cut Tape S/ 4.48 S/ 3.34 S/ 2.60 S/ 2.46 Reel S/ 2.40 View S/ 2.32 S/ 2.24 S/ 2.16 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Standoffs	SMT	2-56	0.125 in	Steel	Zinc	Reel, Cut Tape, MouseReel

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