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Type SMTSO - ReelFast® surface mount nuts and standoffs are available threaded and unthreaded.

ReelFast® surface mount fasteners mount on PC boards in the same manner and at the same time as other surface mount components prior to the automated reflow solder process. The fasteners simply become another board component. This alleviates concerns about potential damage to PC boards due to improper secondary installation operations. The fasteners are provided on tape and reel compatible with existing SMT automated installation equipment. The benefits of using ReelFast® SMT fasteners are: faster assembly; reduced scrap; reduced handling; and reduced risk of board damage.

Packaged on 330 mm recyclable reels. Tape width is 24 mm. Supplied with polyimide patch for vacuum pick up. Reels conform to EIA-481.

Nuts and spacers/standoffs, surface mount – SMTSO
ReelFast® Surface Mount Standoffs - Type SMTSO 2
Unit of Measure
Items Nuts and spacers/standoffs, surface mount – SMTSO
SMTSO-256-2ET
ReelFast® Surface Mount Nuts and Spacers/Standoffs -
Type SMTSO - Unified
Nuts and spacers/standoffs, surface mount – SMTSO
SMTSO-256-4ET
ReelFast® Surface Mount Nuts and Spacers/Standoffs -
Type SMTSO - Unified
Nuts and spacers/standoffs, surface mount – SMTSO
SMTSO-256-8ET
ReelFast® Surface Mount Nuts and Spacers/Standoffs -
Type SMTSO - Unified
Nuts and spacers/standoffs, surface mount – SMTSO
SMTSO-256-12ET
ReelFast® Surface Mount Nuts and Spacers/Standoffs -
Type SMTSO - Unified
Nuts and spacers/standoffs, surface mount – SMTSO
SMTSO-440-2ET
ReelFast® Surface Mount Nuts and Spacers/Standoffs -
Type SMTSO - Unified
Thread Size N/A .086-56 (#2-56) N/A .086-56 (#2-56) N/A .086-56 (#2-56) N/A .086-56 (#2-56) N/A .112-40 (#4-40)
Thru-Hole + .004-.003 N/A
Thread Code N/A 256 N/A 256 N/A 256 N/A 256 N/A 440
Thru-Hole Code N/A
Length Code N/A 2 N/A 4 N/A 8 N/A 12 N/A 2
L - Length ± .005 N/A .062 in a1309.jpg N/A .125 in a1309.jpg N/A .250 in a1309.jpg N/A .375 in a1309.jpg N/A .062 in a1309.jpg
Min. Sheet Thickness N/A .060 in
A Max. N/A .060 in
C Max. N/A .142 in N/A .142 in N/A .142 in N/A .142 in N/A .161 in
E ± .005 N/A .219 in
øH - Hole Size in Sheet + .003 - .000 N/A .147 in N/A .147 in N/A .147 in N/A .147 in N/A .166 in
øD - Min. Solder Pad N/A .244 in
Parts per Reel N/A 1500 N/A 1000 N/A 650 N/A 300 N/A 1500
Pitch N/A 12 mm N/A 12 mm N/A 12 mm N/A 16 mm N/A 12 mm
For Use in Sheet Hardness1 N/A P.C. Board
Thread Specification N/A Internal, ASME B1.1, 2B
Fastener Material N/A Carbon Steel
Standard Finish N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed
Optional Finish N/A
CAD Supplier N/A PennEngineering® (PEM®)
  • 1 For use in P.C. Board