Standard-K® Connectors

RUGGED CONNECTORS FOR A RANGE OF APPLICATIONS
PEI-Genesis Standard-K® connectors are rugged, reliable, lightweight and easy to use. Standard-K® connectors are chemical and corrosion-resistant with excellent electrical insulation and stability, making them ideal for applications as diverse as oil field equipment, shipboard circuit breakers, concert audio snakes, mass transit applications, and MRI machines. This series is available in common layouts from 2 pin connectors all the way up to 110 pins. The Standard-K® is manufactured by Sure-Seal Connections, a division of PEI-Genesis. For full details on PEI-Genesis Standard-K® connectors, see the product specifications below.

FEATURESPEI-GENESIS STANDARD-K® SERIES FEATURES
MATERIALS & FINISHESPEI-GENESIS STANDARD-K® SERIES MATERIALS & FINISHES
Shell Aluminum alloy, solid shell
Shell Plating Clear chromate over cadmium per QQ-P-416 Type II class 3 thickness or electroless nickel
Insulator Diallyl phthalate, fabricated phenolic or mineral-filled glass
Contacts Copper alloy
Contact Plating Silver plate, (gold plate optional)
ELECTRICAL DATAPEI-GENESIS STANDARD-K® SERIES ELECTRICAL DATA
Operating/Test Voltage There shall be no evidence of breakdown when the test voltages indicated are applied, for a period of one minute between the contacts and between the shell and the contacts.
Laboratory Conditions
Ambient Temperature: 23°C to 27°C.
Relative Humidity: 69% to 73% Barometric Pressure: 29.70" to 9.75" Insert Material: Phenolic XXX-P or molded diallyl phthalate Current Rating
Mating Guide
MECHANICALPEI-GENESIS STANDARD-K® SERIES MECHANICAL
Operating Temperature -67°F to +257°F (-55°C to +125°C)
Mating Life 500 cycles minimum
Contact Type Solder pot or crimp, mini co-ax
Number of Circuits 2 to 110
Polarization Key and keyway plus optional rotational polarization
Color Silver. Insulators are brown or black.
EXPLODED VIEWPEI-GENESIS STANDARD-K® SERIES EXPLODED VIEW Pin Contacts
Socket Contacts
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PEI-GENESIS STANDARD-K® SERIES APPLICATIONS
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STEP 1: LAYOUTPEI-GENESIS STANDARD-K® SERIES EXAMPLE
1 2 3 4 5 WK-4 21C 1/2 W EN SHELL SIZE LAYOUT SHELL STYLE CABLE CLAMP ROTATION SHELL PLATING STEP 1: CHOOSE SHELL SIZE LAYOUT BY NUMBER OF CONTACTS
Choose the contact arrangement from the layouts pictured on pages SK 6 and SK7 or the chart below. Layout designations include a letter prefix indicating the shell size. The coupling diameter of the shells are as follows:
WK = 7/8" GK = 1-3/16" SK = 1-5/16" NK = 1-9/16" LK = 2-1/2" Contact Sizes (Max. AWG) Layout Hot Products Total 20* 16* 14 10 8 6 4 AMPS Test Voltage 60 cps (ac rms) Optional Rotations WK-M2 ✓ 2 2 10 2350 W,X SK-S2 2 2 80 2050 - GK-V2 2 2 15 3450 - GK-C3 3 1 2 15/60 1300 V,X,Y NK-E3 3 3 80 2350 - WK-C3 ✓ 3 1 2 10/30 1300 W WK-3 ✓ 3 3 15 1700 V,W,X,Z WK-4 ✓ 4 4 10 1300 V,W,Z NK-P4 4 4 60 2350 W,X,Y,Z GK-4 ✓ 4 4 30 1300 - WK-S4 4 2 2 10/30 1300 W,Z WK-5 ✓ 5 5 10 1300 V,W,X,Y,Z SK-5 5 5 30 2050 - WK-S5 5 4 1 10/30 1300 - SK-6 ✓ 6 6 30 1700 W WK-6 ✓ 6 6 10 1300 V,W,X,Y,Z WK-A7 ✓ 7 7 10 1300 V,W,X,Y,Z
3050 (7)
SK-M7 7 3 4 10/30 2050 - NK-M8 8 8 30 2500 - WK-8 ✓ 8 8 5 2050 V,W,X,Y,Z NK-L8 ✓ 8 4 4 15/40 2050 V,X,Y GK-8 8 8 15 1300 - GK-S8 ✓ 8 4 4 10/30 1300 - NK-D8 8 8 15 2600 - GK-9 ✓ 9 9 10 1700 V,W,X,Y,Z SK-M10 10 8 2 10/30 2050 V,W,Z NK-L11 ✓ 11 1 8 2 10/15/30 2050 - GK-12 ✓ 12 12 10 1300 V,W,X,Y,Z NK-12 12 12 15 2050 V,W,X,Y,Z SK-D12 12 8 4 10/30 1300 W,X,Y NK-L15 15 15 15 1700 - SK-C16 ✓ 16 14 2 10/30 1300 W,X,Y,Z SK-19 ✓ 19 19 10 1300 W,X,Y,Z FK-L20 20 13 7 5 2050 - FK-W20 ✓ 20 Uses Co-ax Contacts (sold separately)** - 1000 - NK-L23 ✓ 23 19 2 2 10/15/30 1300 - SK-24 ✓ 24 24 5 1700 - NK-27 ✓ 27 27 10 1300 V,W,X,Y,Z
2900
FK-37 ✓ 37 37 10 1300 V,W,X,Y,Z FK-46 ✓ 46 46 10 1300 V,W,X,Y,Z FK-75 ✓ 75 75 10 1300 W,X,Y,Z LK-81 81 81 10 1300 V,W,X,Y,Z LK-110 110 110 5 1000 V,W,X,Y,Z * Size 20 contacts are gold plated. Size 16 are standard silver plated, optional gold plated (add -A95 suffix to part number). All other sizes are silver plated. ** Contact us for more information. ✓ indicates most popular layouts. ![]() R*K Reverse Standard-K® Connector; Please contact us. Read Less LAYOUT BY SHELL SIZE
Shell Size WK WK-M2 WK-3 WK-C3 WK-4 WK-S4 Contacts 2 3 3 4 4 Wires 2-#16 3-#14 1-#16 (3) 4-#16 2-#16 (1 & 3) Shell Size WK WK-5 WK-S5 WK-6 WKA7 WK-8 Contacts 5 5 6 7 8 Wires 5-#16 4-#16 (1-4) 6-#16 7-#16 8-#20 Shell Size GK Shell Size GK GK-V2 GK-C3 GK-4 GK-R7 Contacts 2 3 4 7 Wires 2-#14 1-#14 (1) 4-#10 5-#16 (1,2,5,6,7) Shell Size GK GK-8 GK-S8 GK-9 GK-12 Contacts 8 8 9 12 Wires 8-#14 4-#16 (2, 3, 5, 6) 9-#16 12-#16 Shell Size SK Shell Size SK SK-S2 SK-5 SK-6 SK-M7 SK-M10 Contacts 2 5 6 7 10 Wires 2-#4 5-#10 6-#10 3-#16 (2, 6, 7) 8-#16 (2, 4-10) Shell Size SK SK-D12 SK-C16 SK-19 SK-24 Contacts 12 16 19 24 Wires 8-#16 (1, 3, 5, 7, 9-12) 14-#16 (1-12, 14, 16) 19-#16 24-#20 Shell Size NK Shell Size NK NK-E3 NK-P4 NK-D8 NK-L8 NK-M8 Contacts 3 4 8 8 8 Wires 3-#4 4-#6 8-#14 4-#14 (1, 3, 6, 8) 8-#10 Shell Size NK NK-L11 NK-L15 NK-L23 NK-27 Contacts 11 15 23 27 Wires 1-#16 (1) 15-#14 19-#16 (5-23) 27-#16 Shell Size FK Shell Size FK FK-L20 FK-W20 FK-32 FK-37 FK-46 FK-75 Contacts 20 20 32 37 46 75 Wires 13-#16 (1-13) 20 min. co-ax. 32-#16 37-#16 46-#16 75-#20 Shell Size LK Shell Size LK LK-81 LK-110 Contacts 81 110 Wires 81-#16 110-#20 Read Less STEP 2: STYLESTEP 2: CHOOSE SHELL STYLE
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21C 23C 22C 24C
31S 31SL 32S 32SL Threaded Barrels STEP 3: CABLE CLAMPSTEP 3: CHOOSE CABLE CLAMP
Straight Endbells 21C/22C Dimension C: (Maximum cable clamp capacity) Inches 1/4 5/16 3/8 1/2 5/8 3/4 7/8 1 1-1/2 WK ✓ ✓ ✓ ✓ ✓ GK ✓ ✓ SK ✓ ✓ NK ✓ ✓ FK ✓ ✓ LK ✓ Right Angle Endbells 23C/24C Dimension C: (Maximum cable clamp capacity) Inches 3/8 1/2 5/8 7/8 11/16 3/4 1 WK ✓ GK ✓ ✓ SK ✓ ✓ NK ✓ FK ✓ ✓ LK Not available in 23C or 24C STEP 4: ROTATIONSSTEP 4: OPTIONAL ROTATIONS
Choose a rotation (omit this character for normal orientation).
Refer to chart in Step 1 for rotations for your layout.![]()
NOTES: 1. Shell polarizing means is indicated by arrow at 45° and will remain constant regardless of insert rotation. 2. Insert to be rotated within the shell to the required position as viewed from engaging end of pin insert, wire side of socket insert. 3. Consult factory for alternate positions available for each layout or for alternate positions not shown. STEP 5: PLATINGSTEP 5: SHELL PLATING
![]() Omit - (for clear chromate over cadmium) |
STRAIGHT PLUGPEI-GENESIS STANDARD-K® SERIES K-21C STRAIGHT PLUG
Socket Contacts Part Number D Dia. +1/64 E +1/64 L +3/64 A THD C WK-(*)-21C 1-3/64 7/16 2-3/32 7/8-6 GK-(*)-21C 1-23/64 7/16 2-3/16 1-3/16-6 SK-(*)-21C 1-15/32 7/16 2-3/16 1-5/16-6 NK-(*)-21C 1-47/64 7/16 2-5/32 1-9/16-6 FK-(*)-21C 2-1/64 7/16 2-5/16 1-13/16-6 LK-(*)-21C 2-7/8 1/2 3-1/8 2-1/2-6 STRAIGHT RECEPTACLEPEI-GENESIS STANDARD-K® SERIES K-22C STRAIGHT RECEPTACLE
Pin Contacts Part Number E +1/64 L +3/64 A THD C WK-(*)-22C 7/16 1-29/32 7/8-6 GK-(*)-22C 7/16 2 1-3/16-6 SK-(*)-22C 7/16 2 1-5/16-6 NK-(*)-22C 7/16 1-31/32 1-9/16-6 FK-(*)-22C 7/16 2-5/32 1-13/16-6 LK-(*)-22C 1/2 2-15/16 2-1/2-6 WALL MOUNT RECEPTACLESPEI-GENESIS STANDARD-K® SERIES K-32S & K-32SL WALL MOUNT RECEPTACLES
Pin Contacts K-32S (Small Flange) K-32SL (Large Flange) For K-32S and K-32SL For K-32S For K-32SL Order Number L +3/64 N + .005 M +1/64 A THD R + .005 S +1/64 T +.005 R + .005 S +1/64 T +.005 WK-(*)-32S 3/4 3/4 7/16 7/8-6 .729 15/16 .120 .972 1-5/16 .144 GK-(*)-32S 3/4 1 7/16 1-3/16-6 .972 1-1/4 .120 1.193 1-9/16 .169 SK-(*)-32S 3/4 1-1/8 7/16 1-5/16-6 1.038 1-3/8 .120 1.282 1-11/16 .169 NK-(*)-32S 3/4 1-3/8 7/16 1-9/16-6 1.259 1-5/8 .144 1.503 1-15/16 .169 FK-(*)-32S 3/4 1-5/8 7/16 1-13/16-6 1.503 1-7/8 .144 1.679 2-1/8 .169 LK- 27/32 2-1/4 1/2 2-1/2-6 2.077 2-9/16 .169 2.210 2-7/8 .169 For K-32SL (large flange) add "L" to nomenclature, e.g. WK-(*)-32S becomes WK-(*)-32SL. Large flange most popular. * Add contact arrangement. ANGLE PLUG/RECEPTACLEPEI-GENESIS STANDARD-K® SERIES K-23C 90º ANGLE PLUG
Socket Contacts K-32S (Small Flange) Part Number C +1/64 D +1/64 E +1/64 H +3/64 J +1/64 L +1/16 A THD WK-(*)-23C-3/8" 13/32 1-3/64 7/16 1-23/64 1 1-3/4 7/8-6 GK-(*)-23C-1/2" 17/32 1-23/64 7/16 1-7/16 1-9/32 1-15/16 1-3/16-6 GK-(*)-23C-5/8" 21/32 1-23/64 7/16 1-9/16 1-9/32 2-5/32 1-3/16-6 SK-(*)-23C-1/2" 17/32 1-15/32 7/16 1-29/64 1-7/16 1-15/16 1-5/16-6 SK-(*)-23C-5/8" 21/32 1-15/32 7/16 1-17/32 1-7/16 2-7/32 1-5/16-6 NK-(*)-23C-11/16" 23/32 1-47/64 7/16 1-35/64 1-9/16 2-1/8 1-9/16-6 FK-(*)-23C-5/8" 21/32 2-1/64 7/16 1-33/64 1-23/32 2-1/16 1-13/16-6 FK-(*)-23C-7/8" 29/32 2-1/64 7/16 1-11/16 1-23/32 2-23/64 1-13/16-6 PEI-GENESIS STANDARD-K® SERIES K-24C 90º ANGLE RECEPTACLE
Part Number C +1/64 E +1/64 H +3/64 J +1/64 L +1/16 A THD WK-(*)-24C-3/8" 13/32 7/16 1-11/64 1 1-9/16 7/8-6 GK-(*)-24C-1/2" 17/32 7/16 1-1/4 1-9/32 1-3/4 1-3/16-6 GK-(*)-24C-5/8" 21/32 7/16 1-3/8 1-9/32 1-31/32 1-3/16-6 SK-(*)-24C-1/2" 17/32 7/16 1-17/64 1-7/16 1-3/4 1-5/16-6 SK-(*)-24C-5/8" 21/32 7/16 1-11/32 1-7/16 1-29/32 1-5/16-6 NK-(*)-24C-11/16" 23/32 7/16 1-23/64 1-9/16 1-15/16 1-9/16-6 FK-(*)-24C-5/8" 21/32 7/16 1-23/64 1-23/32 1-7/8 1-13/16-6 FK-(*)-24C-7/8" 29/32 7/16 1-17/32 1-23/32 2-13/64 1-13/16-6 PANEL CUTOUTSPEI-GENESIS STANDARD-K® SERIES PANEL CUTOUTS
G±.005 H Min. Shell Size 31S 32S 31SL 32SL 31S 32S 31SL 32SL J Min. WK .729 .972 .134 .154 .785 GK .972 1.193 .134 .177 1.040 SK 1.038 1.282 .134 .177 1.160 NK 1.259 1.503 .134 .177 1.410 FK 1.503 1.679 .134 .177 1.660 LK 2.077 2.210 .177 .177 2.330 WALL MOUNT PLUGPEI-GENESIS STANDARD-K® SERIES K-31S & K-31SL WALL MOUNT PLUG
Socket Contacts K-31S (Small Flange) K-31SL (Large Flange) For K-32S and K-32SL For K-32S For K-32SL Order Number D +3/64 E +1/64 L +3/64 A THD R + .005 S +1/64 T +.005 R + .005 S +1/64 T +.005 WK-(*)-31S 1-3/64 7/16 1-3/16 7/8-6 .730 15/16 .120 .972 1-5/16 .144 GK-(*)-31S 1-23/64 7/16 1-7/32 1-3/16-6 .972 1-1/4 .120 1.192 1-9/16 .169 SK-(*)-31S 1-15/32 7/16 1-7/32 1-5/16-6 1.038 1-3/8 .120 1.280 1-11/16 .169 NK-(*)-31S 1-47/64 7/16 1-7/32 1-9/16-6 1.259 1-5/8 .169 1.500 1-15/16 .169 FK- 2-1/64 7/16 1-1/4 1-13/16-6 1.502 1-7/8 .169 1.678 2-1/8 .169 LK- 2-7/8 1/2 1-13/32 2-1/2-6 2.077 2-9/16 .169 2.210 2-7/8 .169 For K-31SL (large flange) add "L" to nomenclature, e.g. WK-(*)-31S becomes WK-(*)-31SL. Large flange most popular. * Add contact arrangement. |
DUST CAPSPEI-GENESIS STANDARD-K® SERIES DUST CAPS
Metal-threaded dust caps with chain or cost-effective, press-fit plastic dust caps are available. For Plugs For Receptacles Shell Size Metal w/ Chain Plastic Metal w/ Chain Plastic WK WK-59A-2 WK-P WK-60A-2 WK-R GK GK-59A-2 GK-P GK-60A-2 GK-R SK SK-59A-2 SK-P SK-60A-2 SK-R NK NK-59A-2 NK-P NK-60A-2 NK-R FK FK-59A-2 FK-P FK-60A-2 FK-R LK LK-59A-2 LK-P LK-60A-2 LK-R BARREL EXTENSIONSPEI-GENESIS STANDARD-K® SERIES BARREL EXTENSIONS
Shell Size Part Number Length SK 019961-0001 1 7/32"
019961-0014 019961-0021 019961-0006 1/2" 3/4" 1 1/8" FK 019961-0003 019961-0016 1 7/32" 1" LK 019961-0012 1" |