CSS-0420-12

Stainless Steel Standoffs – Types CSS, CSOS

CSS-0420-12

Stainless Steel Standoffs – Types CSS, CSOS

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 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.

Specifications

Thread Code
420
Thread Size
1/4-20
Thread Specification
2B, ANSI B1.1, Internal
Shank
Short
Fastener Material
300 Series Stainless Steel
Material Code
S
Standard Finish
Passivated and/or tested
For Use in Sheet Hardness
HRB 70 / HB 125 or Less
Length Code
12
Style
#3
Product Category
Stainless Steel Standoffs – Types CSS, CSOS
CAD Supplier
PennEngineering® (PEM®)
CADPartID
103706
Application Type
Industrial
Base Panel Material
Aluminum, Steel
Brand
PEM
Fastener Characteristics
Threaded Internal
Industry
Automotive, Automotive Electronics, Datacom & Telecom, Defense, Electric Vehicles, Industrial & Commercial, Medical
Installation Equipment/Method
C-Frame Automatic Feed, C-Frame Manual Feed
PEM Product Family
CH
Product Type
Standoffs
Technology Type
Self-Clinching
Unit (Metric/Unified)
Unified
A Max._in
0.041in
B Max._in
0.354in
Blind Mounting Hole Diameter + .003 – .000_in
0.39in
H Nom._in
0.438in
L – Length + .002 –.005_in
0.75in
Min. Depth Full Thread F_in
0.375in
Min. Depth of Blind Hole_in
0.043in
Min. Dist. Hole C/L to Edge_in
0.375in
Min. Sheet Thickness_in
0.062in
C Max._in
0.389in

Resources

Installation & Performance Data

ch-chc-cfhc-cha-cfha-studs-metric
TYPE THREAD CODE MAX. TIGHTENING TORQUE REF. (N•m) TEST SHEET MATERIAL INSTALLATION (kN) PULLOUT (N)
CHC M3 0.55 Cold-Rolled Steel 8 1065
CHC M4 2 Cold-Rolled Steel 17.8 1200
CHC M5 3.6 Cold-Rolled Steel 22.2 1290
CFHC M3 0.55 Cold-Rolled Steel 8.9 1065
CFHC M4 2 Cold-Rolled Steel 14.7 1955
CFHC M5 3.6 Cold-Rolled Steel 17.8 3020
CHA M3 0.3 Cold-Rolled Steel (2) (2)
CHA M4 1.2 Cold-Rolled Steel (2) (2)
CHA M5 2.16 Cold-Rolled Steel (2) (2)
CFHA M3 0.3 Cold-Rolled Steel (2) (2)
CFHA M4 1.2 Cold-Rolled Steel (2) (2)
CFHA M5 2.16 Cold-Rolled Steel (2) (2)
CHC M3 0.55 5052-H34 Aluminum 6.2 575
CHC M4 2 5052-H34 Aluminum 12.5 800
CHC M5 3.6 5052-H34 Aluminum 17.8 930
CFHC M3 0.55 5052-H34 Aluminum 6.7 890
CFHC M4 2 5052-H34 Aluminum 13.3 1375
CFHC M5 3.6 5052-H34 Aluminum 15.6 1600
CHA M3 0.3 5052-H34 Aluminum 6.2 555
CHA M4 1.2 5052-H34 Aluminum 12.5 645
CHA M5 2.16 5052-H34 Aluminum 17.8 755
CFHA M3 0.3 5052-H34 Aluminum 6.7 845
CFHA M4 1.2 5052-H34 Aluminum 13.3 1065
CFHA M5 2.16 5052-H34 Aluminum 15.6 1330
ch-chc-cfhc-cha-cfha-studs-unified
TYPE THREAD CODE MAX. TIGHTENING TORQUE REF. (in. lbs.) TEST SHEET MATERIAL INSTALLATION (lbs.) PULLOUT (lbs.)
CHC 440 4.75 Cold-Rolled Steel 1800 240
CHC 632 8.75 Cold-Rolled Steel 2500 260
CHC 832 18 Cold-Rolled Steel 4000 270
CHC 032 32 Cold-Rolled Steel 5000 290
CFHC 440 4.75 Cold-Rolled Steel 2000 240
CFHC 632 8.75 Cold-Rolled Steel 2700 350
CFHC 832 18 Cold-Rolled Steel 3300 440
CFHC 032 32 Cold-Rolled Steel 4000 680
CHA 440 2.85 Cold-Rolled Steel (2) (2)
CHA 632 5.4 Cold-Rolled Steel (2) (2)
CHA 832 10.8 Cold-Rolled Steel (2) (2)
CHA 032 19.2 Cold-Rolled Steel (2) (2)
CFHA 440 2.85 Cold-Rolled Steel (2) (2)
CFHA 632 5.4 Cold-Rolled Steel (2) (2)
CFHA 832 10.8 Cold-Rolled Steel (2) (2)
CFHA 032 19.2 Cold-Rolled Steel (2) (2)
CHC 440 4.75 5052-H34 Aluminum 1400 130
CHC 632 8.75 5052-H34 Aluminum 1800 160
CHC 832 18 5052-H34 Aluminum 2800 180
CHC 032 32 5052-H34 Aluminum 4000 210
CFHC 440 4.75 5052-H34 Aluminum 1500 200
CFHC 632 8.75 5052-H34 Aluminum 2500 260
CFHC 832 18 5052-H34 Aluminum 3000 310
CFHC 032 32 5052-H34 Aluminum 3500 360
CHA 440 2.85 5052-H34 Aluminum 1400 125
CHA 632 5.4 5052-H34 Aluminum 1800 135
CHA 832 10.8 5052-H34 Aluminum 2800 145
CHA 032 19.2 5052-H34 Aluminum 4000 170
CFHA 440 2.85 5052-H34 Aluminum 1500 190
CFHA 632 5.4 5052-H34 Aluminum 2500 220
CFHA 832 10.8 5052-H34 Aluminum 3000 240
CFHA 032 19.2 5052-H34 Aluminum 3500 300
ch-css-csos-standoffs-metric
TYPE THREAD CODE MAX. TIGHTENING TORQUE REF. (N•m) TEST SHEET MATERIAL INSTALLATION (kN) PULLOUT (N)
CSS M3 0.55 Cold-Rolled Steel 17.8 1330
CSS M4 2 Cold-Rolled Steel 21.3 1775
CSS M5 3.6 Cold-Rolled Steel 24.5 2000
CSOS M3 0.55 Cold-Rolled Steel 19.2 1465
CSOS M4 2 Cold-Rolled Steel 23.6 1955
CSOS M5 3.6 Cold-Rolled Steel 26.7 2665
CSOS M6 7.2 Cold-Rolled Steel 28.9 2860
CSS M3 0.55 5052-H34 Aluminum 12.5 890
CSS M4 2 5052-H34 Aluminum 17.8 1200
CSS M5 3.6 5052-H34 Aluminum 22.2 1290
CSOS M3 0.55 5052-H34 Aluminum 12.9 975
CSOS M4 2 5052-H34 Aluminum 17.8 1335
CSOS M5 3.6 5052-H34 Aluminum 22.2 1775
CSOS M6 7.2 5052-H34 Aluminum 24.4 1915
ch-css-csos-standoffs-unified
TYPE THREAD CODE MAX. TIGHTENING TORQUE REF. (in. lbs.) TEST SHEET MATERIAL INSTALLATION (lbs.) PULLOUT (lbs.)
CSS 440 4.75 Cold-Rolled Steel 4000 300
CSS 632 8.75 Cold-Rolled Steel 4500 350
CSS 832 18 Cold-Rolled Steel 4800 400
CSS 032 32 Cold-Rolled Steel 5500
CSOS 440 4.75 Cold-Rolled Steel 4300 330
CSOS 632 8.75 Cold-Rolled Steel 5000 360
CSOS 832 18 Cold-Rolled Steel 5300 440
CSOS 032 32 Cold-Rolled Steel 6000 600
CSOS 0420 64 Cold-Rolled Steel 6500 650
CSS 440 4.75 5052-H34 Aluminum 2800 200
CSS 632 8.75 5052-H34 Aluminum 3000 240
CSS 832 18 5052-H34 Aluminum 4000 270
CSS 032 32 5052-H34 Aluminum 5000 290
CSOS 440 4.75 5052-H34 Aluminum 2900 220
CSOS 632 8.75 5052-H34 Aluminum 3200 240
CSOS 832 18 5052-H34 Aluminum 4000 300
CSOS 032 32 5052-H34 Aluminum 5000 400
CSOS 0420 64 5052-H34 Aluminum 5500 430

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