Part # SMTSOB-440-8ET, ReelFast® Brass Surface Mount Nuts and Spacers/Standoffs - Type SMTSOB

Type SMTSOB™ - ReelFast® brass fasteners are ideal for applications which demand superior electrical/mechanical attachment points.

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

Unit of Measure

Specifications

Thread Size	N/A .112-40 (#4-40)
Thread Code	N/A 440
Length Code	N/A 8
L - Length ± .005¹	N/A .250 in
Min. Sheet Thickness	N/A .060 in
A Max.	N/A .060 in
C Max.	N/A .161 in
E ± .005	N/A .219 in
øH - Hole Size in Sheet + .003 - .000	N/A .166 in
øD - Min. Solder Pad	N/A .244 in
Parts per Reel	N/A 650
Pitch	N/A 12 mm
For Use In	N/A P.C. Board
Thread Specification	N/A Internal, ASME B1.1, 2B
Fastener Material	N/A Brass
Standard Finish²	N/A Electro-Plated Tin, ASTM B 545, Class A with Clear Preservative Coating, annealed
CAD Supplier	N/A PennEngineering® (PEM®)
Inventory	N/A {0}

¹ The “L” dimension is the height of the installed stud at max grip. The height of the stud will increase if it is installed into thinner material. To calculate “actual L” use this formula: max grip - actual grip + L = “actual L”
² The tin deposit on type SMTSOB meets the requirements of ASTM B545, Class A and although the copper and nickel barrier layers used under the tin do not strictly comply with ASTM B545 thickness requirements they have proven effective at preventing zinc mig

Specifications

Thread Size

Thread Code

Length Code

Min. Sheet Thickness

A Max.

C Max.

E ± .005

øH - Hole Size in Sheet + .003 - .000

øD - Min. Solder Pad

Parts per Reel

Pitch

For Use In

Thread Specification

Fastener Material

CAD Supplier

Inventory