52-SM Captive Screws 472 Miniature series * Surface Mount Technology (SMT) Style * For installation to PC Board material utilizing surface mount technology * Smaller footprint for limited space applications * Heat treated steel screw for optimum strength Recess Styles No. 2 Phillips / Slot Combination OB ACTUAL SIZE T15 TORX(R) / Slot Combination OJ Internal spring: 300 series stainless steel, passivated Screw Height and Screw Projection Unfastened (Total float F* of screw in standoff) Standoff: Steel, Tin plated Plug: Silicone rubber Spring PC Board Preparation Soldering pad surface area Fastened ON OK Installation Notes Soldering Pad PC Board H-1 Visit www.southco.com for additional installation guidelines H-2 To ensure you receive SOUTHCO(R) quality parts, look for the segmented circle. See table P-1 Screw as Shipped in Reel Pack or Tray Pack O 7.9 (0.31) Polyimide tape patch on top surface of screw for vacuum pick up 52 Captive Screws Minature Series - SMT Style Part Number Specify Package Indicate package option with last digit of the part number Example 52-SM-1311-K-R: Reel Package (as shown in table) 52-SM-1311-K-T: Tray Package Part Number (Reel package shown) Knurled Head Smooth Head H-1 H-2 Phillips / Slotted TORX(R)/Slotted Phillips / Slotted TORX(R)/Slotted M3 x 0.5 52-SM-3311-K-R 52-SM-3411-K-R 52-SM-3311-N-R 52-SM-3321-K-R 52-SM-3421-K-R 52-SM-3321-N-R 4-40 52-SM-1311-K-R 52-SM-1411-K-R 52-SM-1311-N-R 52-SM-1321-K-R 52-SM-1421-K-R 52-SM-1321-N-R 6-32 52-SM-2311-K-R 52-SM-2411-K-R 52-SM-2311-N-R 52-SM-2321-K-R 52-SM-2421-K-R 52-SM-2321-N-R Other options available. For complete details on variety, part numbers, installation and specification, go to www.southco.com/52 OD 1.5 (.063) Min. P-2 * Value represents float in unfastened position Notes: P-1, P-2 Screw Projection measured from the top side of panel Part Number Thread Size OE Standoff Screw Material and Finish Screw: Hardened carbon steel, zinc plated, chromate, plus sealer C G OB P-1 O 7.62 (0.30) Packed with Plug OB OB P-2 Knurled Smooth O J O E C Head Head G F* O K O N Panel Preparation OD 52-SM-3411-N-R 14 9.6 0.8 (.03) 5.3 (.21) 52-SM-3421-N-R (.55) (.38) 2.3 (.09) 6.8 (.27) 52-SM-1411-N-R 14 9.6 0.8 (.03) 5.3 (.21) 52-SM-1421-N-R (.55) (.38) 2.3 (.09) 6.8 (.27) 7 (.28) 6.8 (.27) 7 (.28) 6.8 (.27) 5.5 7.6 7 2.5 0.5 5.6 +0.08/-0 (.217) (.30) (.28) (.1) (.02) 5.6 8.6 (.220 +.003/-.000) 5.5 7.6 7 2.5 0.5 (.22) (.34) 5.6 +0.08/-0 (.217) (.30) (.28) (.1) (.02) (.220 +.003/-.000) 52-SM-2411-N-R 15.7 10.7 0.7 (.028) 5.8 (.23) 52-SM-2421-N-R (.62) (.42) 2.2 (.087) 7.4 (.29) 7.9 (.31) 7.6 (.30) 6.2 8.1 8.1 2.5 0.8 6.4 10.2 6.4 +0.08/-0 (.244) (.32) (.32) (.1) (.03) (.25) (.40) (.252 +.003/-.000) TORX is a registered trademark of ACUMENT (R) Intellectual Properties, LLC Dimensions in millimeters (inch) unless otherwise stated H-1 P-1 H-2 P-2 InstallationScrewGuidelines Knob Southco Surface Mounted Technology (SMT) Captive Screws include installation and packaging features for installation onto PC Boards during the Reflow Process as a surface mounted device (SMD). 473 Ferrule OJ SMT product installation is offered on these Southco Captive Screws for 4-40, 6-32 and M3 thread sizes: * 47 Styled Knob Series * 4C Prism Series * 52 Miniature Series Installation Features Each Southco SMT style captive screw includes a polymide patch covering the screw head tool recess allowing for vacuum pick up during placement on the PC Board. The screw threads are protected from excess solder during the reflow process by a plug pre-assembled to the screw by Southco. The patch and plug are then removed after the final cool down phase. Screw as Shipped in Reel or Tray Pack Polyimide tape patch on top surface of screw for vacuum pick up Packed with Plug Preparing the PC Board to accept SMT Captive Screws * See literature for optimum soldering pad surface area for the specific Southco Captive Screw being utilized Soldering Pad PC Board Packaging Features/Options * Tray Pack * Reel Pack Tray Pack Reflow Process * Reflow of Solder - Pre-heat - Soak - Reflow - Cooling * Cleaning - Remove excess solder paste Dimensions in millimeters (inch) unless otherwise stated Reel Pack OE 52 Captive Screws 474 Miniature series * Flare-in style * Smaller footprint for limited space applications * Heat treated steel screw for optimum strength Material and Finish Screw: Hardened carbon steel, zinc plated, chromate, plus sealer Recess Styles Phillips / Slot combination OB (R) TORX / Slot combination OB 7 G L ACTUAL SIZE OJ Screw Phillips / Slot Recess T15 TORX(R) (M3,4-40,6-32) No. 2 Phillips T25 TORX(R) (M4) OE Standoff Spring Spring: 300 series stainless steel, passivated Standoff: Aluminum natural Installation tool: Hardened carbon steel, zinc plated, chromate, plus sealer Installation Notes 1. Prepare panel as shown 2. Use light pressure to flare standoff, assuring parallel surfaces on the punch and installation tool Knob Height and Screw Projection Unfastened Fastened Panel thickness (Total float of screw in F* standoff) OD 0.40.1 (.016.005) 90 H-1 H-2 Smooth face punch (O > screw head) P-2 P-1 H* - Value represents float in unfastened position Notes: P-1, P-2 measured from the top side of panel Installation tool (see table) 45 Part Number OZ See table Part Number Knurled Head Smooth Head (R) Phillips / TORX / Phillips / TORX(R)/ Min. Max. Slotted Slotted Slotted Slotted OB OE F G H-1 H-2 OJ L P-1 P-2 4-40 0.8 (.031) 2.4 (.094) 52-19-11-4 52-17-11-4 52-1A-11-4 52-18-11-4 7 (.28) 6.2 (.245) 0.5 (.018) 2.5 (.1) 14 (.55) 9.6 (.38) 4.6 (.183) 1 (.041) 0.8 (.031) 6-32 1.5 (.058) 3.2 (.125) 52-29-21-4 52-27-21-4 52-2A-21-4 52-28-21-4 8 (.31) 7 (.28) 0.7 (.028) 2.5 (.1) 15 (.59) 9.6 (.38) 5.3 (.209) 1.8 (.07) M3 x 0.5 0.8 (.031) 2.4 (.094) 52-39-11-4 7 (.28) 6.2 (.245) 0.6 (.023) 2.5 (.1) 14 (.55) 9.6 (.38) 4.6 (.183) M4 x 0.7 1.5 (.058) 3.2 (.125) 52-49-21-4 9.4 (.37) 8.7 (.34) 0.7 (.028) 3 (.12) 15.2 (.60) 10.1 (.40) 6.7 (.26) Thread Size Panel Thickness 52-37-11-4 52-47-21-4 52-3A-11-4 52-4A-21-4 52-38-11-4 52-48-21-4 Panel Preparation Note: Subtract .25 (.01) from O B for smooth head style. TORX is a registered trademark of ACUMENT (R) Intellectual Properties, LLC www.southco.com/52 Dimensions in millimeters (inch) unless otherwise stated Tool Part No. OD OZ 5.3 (.21) 4.75 +0.08 -0 (.187 +.003 ) -0 3 (.120) 47-104 1.8 (.07) 6.8 (.27) 5.41+0.08 -0 (.213 +.003 ) 3.6 (.141) 47-106 1 (.041) 0.8 (.031) 5.3 (.21) 4.75+0.08 -0 (.187 +.003 ) 3 (.120) 47-104 1.8 (.07) 1.8 (.07) 6.8 (.27) 4.2 (.166) 47-108 -0 -0 6.76+0.1 -0.04 (.266 +.005) -0 52 Captive Screws 475 Miniature series * Press-in style Recess Styles TORX(R) / Slot combination Screw Phillips / Slot Recess T15 TORX(R) (M3,4-40,6-32) (R) No. 2 Phillips T25 TORX (M4) * Smaller footprint for limited space applications * Heat treated steel screw for optimum strength C G OB G Phillips / Slot combination OB OJ OE Material and Finish Standoff Screw: Hardened carbon steel, zinc plated, chromate, plus sealer Spring Spring: 300 series stainless steel, passivated Standoff: Carbon steel, zinc plated, chromate, plus sealer Knob Height and Screw Projection Unfastened (Total float F* of screw in standoff) 0.9 (.036) Min. panel thickness Fastened H-1 H-2 For use in most aluminum or in low carbon steels that are 1/4 hard or softer OD Smooth face punch (O > screw head) * Value represents float in unfastened position Notes: P-1, P-2 measured from the top side of panel Top side of panel Back-up tool (not supplied) 4-40 6-32 M3 X 0.5 M4 X 0.7 OZ Part Number See table See page 543 for additional installation guidelines ACTUAL SIZE Thread Size Installation Notes Notes: Recommended minimum distance from edge of panel to centerline of hole is 1.5 x O D for press-in version. P-2 P-1 Do not chamfer Part Number Knurled Head Smooth Head (R) Phillips / TORX / Phillips / TORX(R) / Slotted Slotted Slotted Slotted 52-19-51-4 52-17-51-4 52-1A-51-4 52-18-51-4 52-19-53-4 52-17-53-4 52-1A-53-4 52-18-53-4 52-29-51-4 52-27-51-4 52-2A-51-4 52-28-51-4 52-29-53-4 52-27-53-4 52-2A-53-4 52-28-53-4 52-39-51-4 52-37-51-4 52-3A-51-4 52-38-51-4 52-39-53-4 52-37-53-4 52-3A-53-4 52-38-53-4 52-49-51-4 52-47-51-4 52-4A-51-4 52-48-51-4 52-49-53-4 52-47-53-4 52-4A-53-4 52-48-53-4 Panel Preparation OB C OE F* G H-1 H-2 OJ P-1 P-2 7 (.28) 7.9 (.31) 6.4 (.25) 0.5 (.018) 2.5 (.1) 14 (.55) 9.6 (.38) 5.5 (.217) 0.9 (.036) 5.3 (.21) 2.5 (.1) 6.8 (.27) 8 (.31) 8.6 (.34) 7 (.28) 0.7 (.028) 2.5 (.1) 15.5 (.61) 10.4 (.41) 6.3 (.247) 0.9 (.036) 6.1 (.24) 2.5 (.1) 7.6 (.30) 7 (.28) 7.9 (.31) 6.4 (.25) 0.6 (.023) 2.5 (.1) 14 (.55) 9.6 (.38) 5.5 (.217) 0.9 (.036) 5.3 (.21) 2.5 (.1) 6.8 (.27) 9.4 (.37) 8.6 (.34) 8.7 (.34) 0.7 (.028) 3 (.12) 16 (.63) 10.8 (.43) 7.9 (.31) 0.9 (.036) 6.1 (.24) 2.5 (.1) 7.6 (.30) OD OZ 5.56 +0.08 -0 (.219 +.003 ) 3 (.120) -0 6.35 +0.08 -0 (.250 +.003 ) -0 5.56 +0.08 -0 (.219 +.003 ) -0 8 +0 -0.08 (.315 +0 ) -.003 3.7 (.144) 3.2 (.126) 4.4 (.173) TORX is a registered trademark of ACUMENT (R) Intellectual Properties, LLC Dimensions in millimeters (inch) unless otherwise stated www.southco.com/52 52 Overmold Captive Screws 476 Miniature series * Flare-in style * Smaller footprint for limited space applications * Heat treated steel screw for optimum strength * Designate access points with color * Color match captive screws to your industrial design Recess Styles* TORX(R) / Slot combination OB Phillips / Slot combination OB 7.1 (.28) G L OJ Screw Phillips / Slot Recess T15 TORX(R) (M3,4-40,6-32) No. 2 Phillips T25 TORX(R) (M4) 0.40.1 (.016.005) Spring: 300 series stainless steel, passivated Standoff: Aluminum natural Fastened (Total float of screw in F* standoff) 90 H-1 Smooth face punch (O > screw head) Knob: PC/ABS Standoff Spring Unfastened OD Screw: Hardened carbon steel, zinc plated, chromate, plus sealer OE Knob Height and Screw Projection Panel thickness Material and Finish Knob ACTUAL SIZE Installation tool: Hardened carbon steel, zinc plated, chromate, plus sealer H-2 P-2 P-1 F* - Value represents float in unfastened position Notes: P-1, P-2 measured from the top side of panel Performance Details Flamability Rating: UL94-VO Installation Notes 1. Prepare panel as shown 2. Use light pressure to flare standoff, assuring parallel surfaces on the punch and installation tool Installation tool (see table) 45 000 Black OZ 014 Green Part Number See table 0.8 6-32 M3 x 0.5 M4 x 0.7 013 Red Your color contact Southco Specifying Color: To indicate color, change the last three digits of the part number Example: 52-11-11-4-000 Black, 52-11-11-4-013 Red Panel Thread Thickness Size Min. Max. 4-40 008 Blue (shown in table) 2.4 (.031) (.094) 1.5 3.2 (.058) (.125) 0.8 2.4 (.031) (.094) 1.5 3.2 (.058) (.125) Part Number Knurled Head Phillips / TORX(R)/ Slotted Slotted Smooth Head Phillips / TORX(R)/ Slotted Slotted 52-11-11-4-000 * 52-15-11-4-000 * 52-13-11-4-000 * 52-16-11-4-000 * 52-29-21-4-000 52-27-21-4-000 52-2A-21-4-000 52-28-21-4-000 52-31-11-4-000 * 52-35-11-4-000* 52-33-11-4-000 * 52-36-11-4-000* 52-49-21-4-000 52-45-21-4-000 * 52-4A-21-4-000 52-46-21-4-000 * B B Knurled Smooth O E Head Head 6.2 F G H-1 H-2 O J 8.1 7.8 2.5 14 (.32) 8.8 (.31) 8.5 (.245) (.018) 7 0.7 (.1) 2.5 (.55) 15 (.35) 8.1 (.33) 7.8 (.28) (.028) 6.2 0.6 (.1) 2.5 (.59) 14 (.32) 10.3 (.31) 10 (.245) (.023) 8.7 0.7 (.1) 3 (.55) 15.2 (.41) (.39) (.34) (.028) (.12) (.60) *Part Numbers not available with combination head styles; Phillips or TORX(R) only www.southco.com/52 Panel Preparation Dimensions in millimeters (inch) unless otherwise stated 0.5 L P-1 P-2 OD Tool Part O Z No. +0.08 9.6 4.6 1 0.8 5.3 4.75 -0 3 47-104 +.003 (.38) (.183) (.041) (.031) (.21) (.187 -0 ) (.120) +0.08 9.6 5.3 1.8 1.8 6.8 5.41 -0 3.6 47-106 +.003 (.38) (.209) (.07) (.07) (.27) (.213 -0 ) (.141) 4.75 +0.08 3 -0 +.003 ) (.120) 47-104 (.187 (.38) (.183) (.041) (.031) (.21) -0 +0.1 10 6.7 1.8 1.8 6.8 6.76 -0 4.2 47-108 +.005 (.40) (.26) (.07) (.07) (.27) (.266 -0 ) (.166) 9.6 4.6 1 0.8 5.3 TORX is a registered trademark of ACUMENT (R) Intellectual Properties, LLC 52 Overmold Captive Screws 477 Miniature series * Press-in style Recess Styles* Phillips / Slot combination OB TORX(R) / Slot combination OB G OJ Screw Phillips / Slot Recess T15 TORX(R) (M3,4-40,6-32) No. 2 Phillips T25 TORX(R) (M4) Knob Spring * Smaller footprint for limited space applications * Heat treated steel screw for optimum strength * Designate access points with color * Color match captive screws to your industrial design ACTUAL SIZE C OE Standoff Knob Height and Screw Projection Unfastened (Total float F* of screw in standoff) Do not chamfer 0.9 Fastened Min. panel thickness Material and Finish Screw: Hardened carbon steel, zinc plated, chromate, plus sealer OD Spring: 300 series stainless steel, passivated Notes: Recommended minimum distance from edge of panel to centerline of hole is 1.5 x O D for press-in version. H-1 H-2 Standoff: Carbon steel, zinc plated, chromate, plus sealer Smooth face punch (O > screw head) P-2 P-1 Knob: PC/ABS Performance Details F* Value represents float in unfastened position Notes: P-1, P-2 measured from the top side of panel Flamability Rating: UL94-VO Installation Notes Top side of panel 000 Black 008 Blue (shown in table) For use in most aluminum or in low carbon steels that are 1/4 hard or softer. Visit www.southco.com for more information. 013 Red Back-up tool (not supplied) Part Number OZ See table 014 Green Your color contact Southco Specifying Color: To indicate color, change the last three digits of the part number Example: 52-11-11-4-000 Black, 52-11-11-4-013 Red Visit www.southco.com for additional installation guidelines Part Number Thread Size Knurled Head Phillips / TORX(R) / Slotted Slotted 52-11-51-4-000* 52-11-53-4-000* 52-29-51-4-000 6-32 52-29-53-4-000 M3 X 52-31-51-4-000* 0.5 52-31-53-4-000* M4 X 52-49-51-4-000 0.7 52-49-53-4-000 4-40 Smooth Head Phillips / TORX(R) / Slotted Slotted 52-15-51-4-000* 52-13-51-4-000* 52-16-51-4-000* 52-15-53-4-000* 52-13-53-4-000* 52-16-53-4-000* 52-27-51-4-000 52-2A-51-4-000 52-28-51-4-000 52-27-53-4-000 52-2A-53-4-000 52-28-53-4-000 52-35-51-4-000* 52-33-51-4-000* 52-36-51-4-000* 52-35-53-4-000* 52-33-53-4-000* 52-36-53-4-000* 52-45-51-4-000* 52-4A-51-4-000 52-46-51-4-000* 52-45-53-4-000* 52-4A-53-4-000 52-46-53-4-000* Note:*Part Numbers not available with combination head styles; Phillips or TORX(R) only B B Knurled Smooth Head Head 8.1 (.32) 7.8 (.31) 8.8 (.35) 8.5 (.33) 8.1 (.32) 7.8 (.31) 10.3 (.41) 10 (.39) Panel Preparation C O E F* G H-1 H-2 O J P-1 7.9 6.4 0.5 2.5 14 9.6 5.5 0.9 (.036) (.31) (.25) (.018) (.1) (.55) (.38) (.217) 2.5 (.1) 8.6 7 0.7 2.5 15.5 10.4 6.3 0.9 (.036) (.34) (.28) (.028) (.1) (.61) (.41) (.247) 2.5 (.1) 7.9 6.4 0.6 2.5 14 9.6 5.5 0.9 (.036) (.31) (.25) (.023) (.1) (.55) (.38) (.217) 2.5 (.1) 8.6 8.7 0.7 3 16 10.8 7.9 0.9 (.036) (.34) (.34) (.028) (.12) (.63) (.43) (.31) 2.5 (.1) P-2 OD 5.3 (.21) 6.8 (.27) 6.1 (.24) 7.6 (.30) 5.3 (.21) 6.8 (.27) 6.1 (.24) 7.7 (.30) 5.56 (.219 6.35 (.250 5.56 (.219 8 (.315 +0.08 -0 +0 ) -.003 +0.03 -0.00 +0 -.003 ) +0.08 -0 +.003 - .000 ) +0 -0.08 +0 -.003 ) OZ 3 (.120) 3.7 (.144) 3.2 (.126) 4.4 (.173) TORX is a registered trademark of ACUMENT (R) Intellectual Properties, LLC Dimensions in millimeters (inch) unless otherwise stated www.southco.com/52 543 Installation Guidelinesfor SOUTHCO (R) Self-Clinching products Self-clinching product installation is offeredPunch on side these Ferrule (R) of panel Rollover SOUTHCO products, making them easy-to-use captive Area of material that moves into Material panel fasteners: groove thickness Panel * Captive Screws Die side Mounting hole of panel * Receptacles for Quarter-turn Fasteners Mounting hole * Receptacles for Fast-lead Thread Screws diameter Panel edge * Spring-loaded Plungers * Captive Nuts Ferrule of material * Threaded Area Inserts Panel When pressed into a properly prepared hole, self-clinching captive fasteners cold-flow (move) the panel material into the retaining groove of Centerline of mounting hole 1.5 x O Min. the fastener. This material then retains the fastener in the panel. Before installation Ferrule Correct installation Ferrule Panel that moves into groove Panel This area of material Ferrule Ferrule Panel Panel This area of material has separated from the rest of the panel Material Panel edge Mounting hole diameter 1.5 x O Min. has separated from Successful press-in installations depend on: the rest of the panel Material: The hardness of the panel material must not exceed SOUTHCO(R) recommendations. If the panel is too hard, the fastener will not install correctly. Installation Holes: Mounting holes may be drilled, punched, or cast. * Hole edge: the top hole edge must be sharp but with no broken edges. Punch side Ferrule Do not chamfer or debur edge. of panel Rollover Area of material punch and die that moves into * Punched holes: use aMaterial groove with a small clearance to minimize thickness the rollover and fracture Panel Die side angle. Mounting hole of panelthe hole * Hole diameter: measure diameter at the panel surface on Mounting hole Punch side the side on which the fastener will diameter of panel Rollover Panel edge of material bePanel installed. The diameter must be moves into Material within SOUTHCO(R) specifications for ve thickness Centerline of mounting hole that product. 1.5 x O Min. el Die side - If the hole is too large, not e of panel Before installation Correct installation Over installation enough material will flow into the Ferrule Ferrule Ferrule Mounting hole retaining groove and the fastener may not be retained adequately. Panel Panel diameter Panel - If the hole is too small, the fastener will not fit and installation may become difficult and unsafe. Centerline of mounting holefrom the edge of panel: the minimum This * Hole distance recommended area of material x O Min. separated from distance is 1.5 x the diameter of the mounting hole,has unless the rest of the panel Correct installation Over installation otherwise indicated. Punch side of panel thickness - Installing too close to the edge will cause the material to flow in the Panel opposite direction, deforming the edge of the panel. To install closer Die side Mounting hole panel to the edge, you may need to restrain the panelofedge. Over installation Ferrule Rollover Panel Centerline of mounting hole Panel Thickness: Before installation Correct installation Over installation The thickness of the panel location must meet or Ferrule Ferruleat the mounting hole Ferrule Panel Panel exceed Southco's stated minimum recommendations. If the material is too thin, panel deformation and/or damage to the fastener may result. This area of material Installation is fast and easy if you follow these tips: has separated from the rest of the panel How to install: Use the recommended force where noted and a proper back-up tool. - use any parallel-acting press - use a punch whose diameter is larger than the head of the fastener Installation Force: Proper installation requires an even distribution of adequate force. It does not depend on the distance thePunch fastener side is pressed Ferrule of panel Rollover into the panel. Area of material into - Southco doesthat notmoves recommend using a hammer. The impact Material force groove thickness does not provide an even distribution of force to allow the panel Panel Die sidegroove. material to completely flow into the fastener's retaining Mounting hole of panel - Installation force varies from application to application, depending on the criteriaholenoted above. Mounting diameter -OPanel n parts without a collar to provide a hard stop, press-in until the edge Panel edge of the knurl is just barely visible. When to Install: Centerline of mounting hole 1.5 x O Min. Installation is recommended after plating or finishing has been applied to the panel. Over installation Before installation Correct installation The hole diameter must meet Ferrule Ferrulespecifications Ferrule Panel Panel before finish or plating is applied. - Do not over-install parts. This interupts the material and will reduce the This area of material retention strength. has separated from the rest of the panel