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Concealed-Head Standoffs, Types CSS,CSOS - Unified

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These studs and standoffs ensure permanent mounting in metal sheets as thin as .062 in. / 1.6 mm.

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 is simple using a hollow anvil and solid punch. Place the head of the fastener in the hole and insert using any standard press. Displaced sheet metal flows smoothly around the head into the undercut.

NOTE: Some PEM® self-clinching concealed-head studs meet NASM63540 specifications. For a complete Military Specification and National Aerospace Standards Reference Guide (Bulletin NASM) check our web site.

The values reported are averages when all installation specifications and procedures are followed. Variations in mounting hole size, sheet material and installation procedure will affect this data. Performance testing of this product in your application is recommended. We will be happy to provide samples for this purpose.

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Concealed-Head Studs and Standoffs

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MFG #

Inventory

List Price

Thread Size

Thread Code

Min. Sheet Thickness

L - Length Code

Blind Mounting Hole +.003 -.000

Min. Depth of Blind Hole

CSS-440-3 820 0.2765 #4-40 440 .062 in .187 in .213 in .043 in
CSS-632-3 642 0.30032 #6-32 632 .062 in .187 in .290 in .043 in
CSS-832-3 400 0.38689 #8-32 832 .062 in .187 in .312 in .043 in
CSS-032-3 0 QUOTE #10-32 032 .062 in .187 in .344 in .043 in
CSS-0420-3 0 QUOTE 1/4-20 0420 .062 in .187 in .390 in .043 in
CSS-440-4 0 0.3187 #4-40 440 .062 in .250 in .213 in .043 in
CSS-632-4 4427 0.3229 #6-32 632 .062 in .250 in .290 in .043 in
CSS-832-4 11940 0.42834 #8-32 832 .062 in .250 in .312 in .043 in
CSS-032-4 0 QUOTE #10-32 032 .062 in .250 in .344 in .043 in
CSS-0420-4 0 QUOTE 1/4-20 0420 .062 in .250 in .390 in .043 in
CSS-440-5 300 0.33884 #4-40 440 .062 in .312 in .213 in .043 in
CSS-632-5 4491 0.3857 #6-32 632 .062 in .312 in .290 in .043 in
CSS-832-5 0 QUOTE #8-32 832 .062 in .312 in .312 in .043 in
CSS-032-5 0 QUOTE #10-32 032 .062 in .312 in .344 in .043 in
CSS-0420-5 0 QUOTE 1/4-20 0420 .062 in .312 in .390 in .043 in
CSS-440-6 67 0.36086 #4-40 440 .062 in .375 in .213 in .043 in
CSS-632-6 343 0.41383 #6-32 632 .062 in .375 in .290 in .043 in
CSS-832-6 0 QUOTE #8-32 832 .062 in .375 in .312 in .043 in
CSS-032-6 0 QUOTE #10-32 032 .062 in .375 in .344 in .043 in
CSS-0420-6 0 0.85932 1/4-20 0420 .062 in .375 in .390 in .043 in
CSS-440-8 5704 0.39276 #4-40 440 .062 in .500 in .213 in .043 in
CSS-632-8 1339 0.51976 #6-32 632 .062 in .500 in .290 in .043 in
CSS-832-8 0 QUOTE #8-32 832 .062 in .500 in .312 in .043 in
CSS-032-8 0 QUOTE #10-32 032 .062 in .500 in .344 in .043 in
CSS-0420-8 0 QUOTE 1/4-20 0420 .062 in .500 in .390 in .043 in
  Results 1 - 25 of 80 1 2 3 4 
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