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PEM® surface mounted standoffs that eliminate the need for attaching screws

PEM® SMTSS™ fasteners feature a spring action to hold a P.C. Board securely without screw or threaded hardware, allowing for quick assembly.
Mount on P.C. Boards in the same manner and at the same time as other surface mount components prior to the automated reflow solder process.
Alleviated concerns about potential damage to P.C. Boards due to improper secondary installation operations.
Fasteners provided on tape and reel compatible with existing SMT automated installation equipment.
Benefits include reduced scrap, reduced handling and reduced risk of board damage.
Unit of Measure

L - Length ± .005

N/A .250 in TYPE-SMTSSS-2.jpg

Min. Sheet Thickness

N/A .060 in

A Max.

N/A .060 in

C Max.

N/A .161 in

E ± .005

N/A .250 in

B ± .005

N/A .188 in

P ± .005

N/A .141 in

øH - Hole Size in Sheet + .003 - .000

N/A .166 in

øD - Min. Solder Pad

N/A .276 in
Parts per Reel1 N/A 280

Fastener Material

N/A Carbon Steel
Standard Finish2 N/A Electro-Plated Tin, ASTM B 545, Class A with Clear Preservative Coating, annealed

Top Mounting Hole A + .003 -.000

N/A .156 in TYPE-SMTSSS-Application.jpg

Bottom Mounting Hole B + .003 -.000

N/A .166 in
Min. Thickness - Panel 1 (Bottom)3 N/A .060 in

Thickness Range - Panel 2 (Top)

N/A .040 to .070 in

Material - Panel 1 (Bottom)

N/A PC Board

Material - Panel 2 (Top)

N/A PC Board or Metal

Edge Distance C Min.

N/A .100 in

Location Tolerance

N/A ±.005 in

Max. Hardness - Panel 1 (Bottom)

N/A No Limit

Max. Hardness - Panel 2 (Top)

N/A No Limit

CAD Supplier

N/A PennEngineering® (PEM®)
  • 1 Packaged on 330mm recyclable reels. Tape width is 24 mm. Supplied with polyimide patch for vacuum pick up. Reels conform to EIA-481.
  • 2 (1) See PEM Technical Support section of our web site for related plating standards and specifications. (2) Optimal solderability life noted on packaging.
  • 3 For maximum performance, we recommend that you use the maximum shank length for your sheet thickness.

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