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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These standoffs ensure permanent mounting in metal sheets as thin as .062 in.

The fastener head is locked securely in a blind, milled hole and is able to handle substantial loads. The concealed-head feature allows the side of the sheet opposite installation to remain smooth.

Sheet preparation only requires a milled blind hole to the recommended minimum depth. Center-cutting end mills for hole preparation are available from PennEngineering. Installation of the concealed-head studs and standoffs ismore
Concealed-head standoffs - CSOS, CSS
Stainless Steel Standoffs - Types CSS, CSOS 2
Unit of Measure
1 2 3 4 

Part #

Thread Size

Style

Shank

Blind Mounting Hole Diameter + .003 - .000

L - Length + .002 –.005

A Max.

B Max.

C Max.

CAD

Min. Depth Full Thread F

CSS-440-3 N/A .112-40 (#4-40) N/A #1 N/A Short N/A .213 in N/A .187 in N/A .041 in N/A .165 in N/A .212 in N/A CAD Icon (for items table) N/A .188 in
CSS-632-3 N/A .138-32 (#6-32) N/A #1 N/A Short N/A .290 in N/A .187 in N/A .041 in N/A .213 in N/A .289 in N/A CAD Icon (for items table) N/A .250 in
CSS-832-3 N/A .164-32 (#8-32) N/A #1 N/A Short N/A .312 in N/A .187 in N/A .041 in N/A .245 in N/A .311 in N/A CAD Icon (for items table) N/A .250 in
CSS-032-3 N/A .190-32 (#10-32) N/A #1 N/A Short N/A .344 in N/A .187 in N/A .041 in N/A .290 in N/A .343 in N/A CAD Icon (for items table) N/A .375 in
CSS-0420-3 N/A .250-20 (1/4-20) N/A #1 N/A Short N/A .390 in N/A .187 in N/A .041 in N/A .354 in N/A .389 in N/A CAD Icon (for items table) N/A .375 in
CSS-440-4 N/A .112-40 (#4-40) N/A #2 N/A Short N/A .213 in N/A .250 in N/A .041 in N/A .165 in N/A .212 in N/A CAD Icon (for items table) N/A .188 in
CSS-632-4 N/A .138-32 (#6-32) N/A #1 N/A Short N/A .290 in N/A .250 in N/A .041 in N/A .213 in N/A .289 in N/A CAD Icon (for items table) N/A .250 in
CSS-832-4 N/A .164-32 (#8-32) N/A #1 N/A Short N/A .312 in N/A .250 in N/A .041 in N/A .245 in N/A .311 in N/A CAD Icon (for items table) N/A .250 in
CSS-032-4 N/A .190-32 (#10-32) N/A #1 N/A Short N/A .344 in N/A .250 in N/A .041 in N/A .290 in N/A .343 in N/A CAD Icon (for items table) N/A .375 in
CSS-0420-4 N/A .250-20 (1/4-20) N/A #1 N/A Short N/A .390 in N/A .250 in N/A .041 in N/A .354 in N/A .389 in N/A CAD Icon (for items table) N/A .375 in
CSS-440-5 N/A .112-40 (#4-40) N/A #2 N/A Short N/A .213 in N/A .312 in N/A .041 in N/A .165 in N/A .212 in N/A CAD Icon (for items table) N/A .188 in
CSS-632-5 N/A .138-32 (#6-32) N/A #2 N/A Short N/A .290 in N/A .312 in N/A .041 in N/A .213 in N/A .289 in N/A CAD Icon (for items table) N/A .250 in
CSS-832-5 N/A .164-32 (#8-32) N/A #2 N/A Short N/A .312 in N/A .312 in N/A .041 in N/A .245 in N/A .311 in N/A CAD Icon (for items table) N/A .250 in
CSS-032-5 N/A .190-32 (#10-32) N/A #1 N/A Short N/A .344 in N/A .312 in N/A .041 in N/A .290 in N/A .343 in N/A CAD Icon (for items table) N/A .375 in
CSS-0420-5 N/A .250-20 (1/4-20) N/A #1 N/A Short N/A .390 in N/A .312 in N/A .041 in N/A .354 in N/A .389 in N/A CAD Icon (for items table) N/A .375 in
CSS-440-6 N/A .112-40 (#4-40) N/A #2 N/A Short N/A .213 in N/A .375 in N/A .041 in N/A .165 in N/A .212 in N/A CAD Icon (for items table) N/A .188 in
CSS-632-6 N/A .138-32 (#6-32) N/A #2 N/A Short N/A .290 in N/A .375 in N/A .041 in N/A .213 in N/A .289 in N/A CAD Icon (for items table) N/A .250 in
CSS-832-6 N/A .164-32 (#8-32) N/A #2 N/A Short N/A .312 in N/A .375 in N/A .041 in N/A .245 in N/A .311 in N/A CAD Icon (for items table) N/A .250 in
CSS-032-6 N/A .190-32 (#10-32) N/A #1 N/A Short N/A .344 in N/A .375 in N/A .041 in N/A .290 in N/A .343 in N/A CAD Icon (for items table) N/A .375 in
CSS-0420-6 N/A .250-20 (1/4-20) N/A #1 N/A Short N/A .390 in N/A .375 in N/A .041 in N/A .354 in N/A .389 in N/A CAD Icon (for items table) N/A .375 in
CSS-440-8 N/A .112-40 (#4-40) N/A #3 N/A Short N/A .213 in N/A .500 in N/A .041 in N/A .165 in N/A .212 in N/A CAD Icon (for items table) N/A .188 in
CSS-632-8 N/A .138-32 (#6-32) N/A #3 N/A Short N/A .290 in N/A .500 in N/A .041 in N/A .213 in N/A .289 in N/A CAD Icon (for items table) N/A .250 in
CSS-832-8 N/A .164-32 (#8-32) N/A #3 N/A Short N/A .312 in N/A .500 in N/A .041 in N/A .245 in N/A .311 in N/A CAD Icon (for items table) N/A .250 in
CSS-032-8 N/A .190-32 (#10-32) N/A #2 N/A Short N/A .344 in N/A .500 in N/A .041 in N/A .290 in N/A .343 in N/A CAD Icon (for items table) N/A .375 in
CSS-0420-8 N/A .250-20 (1/4-20) N/A #2 N/A Short N/A .390 in N/A .500 in N/A .041 in N/A .354 in N/A .389 in N/A CAD Icon (for items table) N/A .375 in
Unit of Measure
1 2 3 4