PennEngineering
PennEngineering
Corporate Headquarters – Danboro, PA
5190 Old Easton Rd.
Danboro, PA 18916
Phone: 215-766-8853
Toll-Free Phone: 1-800-237-4736 (U.S. only)
Email: info@pemnet.com
Website: www.pemnet.com
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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
1 2 3 

Part #

Thread Size x Pitch

Thru-Hole + 0.10-0.08

L - Length ± 0.13

øH - Hole Size in Sheet + 0.08

Standard Finish

Optional Finish

CAD

SMTSO-M2-2ET N/A M2 x 0.4 N/A N/A 2 mm N/A 3.73 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M2-3ET N/A M2 x 0.4 N/A N/A 3 mm N/A 3.73 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M2-4ET N/A M2 x 0.4 N/A N/A 4 mm N/A 3.73 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M2-6ET N/A M2 x 0.4 N/A N/A 6 mm N/A 3.73 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M2-8ET N/A M2 x 0.4 N/A N/A 8 mm N/A 3.73 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M2-10ET N/A M2 x 0.4 N/A N/A 10 mm N/A 3.73 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M25-2ET N/A M2.5 x 0.45 N/A N/A 2 mm N/A 4.22 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M25-3ET N/A M2.5 x 0.45 N/A N/A 3 mm N/A 4.22 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M25-4ET N/A M2.5 x 0.45 N/A N/A 4 mm N/A 4.22 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M25-6ET N/A M2.5 x 0.45 N/A N/A 6 mm N/A 4.22 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M25-8ET N/A M2.5 x 0.45 N/A N/A 8 mm N/A 4.22 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M25-10ET N/A M2.5 x 0.45 N/A N/A 10 mm N/A 4.22 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M3-2ET N/A M3 x 0.5 N/A N/A 2 mm N/A 4.22 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M3-3ET N/A M3 x 0.5 N/A N/A 3 mm N/A 4.22 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M3-4ET N/A M3 x 0.5 N/A N/A 4 mm N/A 4.22 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M3-6ET N/A M3 x 0.5 N/A N/A 6 mm N/A 4.22 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M3-8ET N/A M3 x 0.5 N/A N/A 8 mm N/A 4.22 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M3-10ET N/A M3 x 0.5 N/A N/A 10 mm N/A 4.22 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M35-2ET N/A M3.5 x 0.6 N/A N/A 2 mm N/A 5.41 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M35-3ET N/A M3.5 x 0.6 N/A N/A 3 mm N/A 5.41 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M35-4ET N/A M3.5 x 0.6 N/A N/A 4 mm N/A 5.41 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M35-6ET N/A M3.5 x 0.6 N/A N/A 6 mm N/A 5.41 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M35-8ET N/A M3.5 x 0.6 N/A N/A 8 mm N/A 5.41 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M35-10ET N/A M3.5 x 0.6 N/A N/A 10 mm N/A 5.41 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
SMTSO-M4-2ET N/A M4 x 0.7 N/A N/A 2 mm N/A 6.35 mm N/A Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed N/A N/A CAD Icon (for items table)
Unit of Measure
1 2 3