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National Standard Products

K.L. Jack carries a selection of high-performance heat shrink terminals and connectors from National Standard Parts Associates (NSPA)—a trusted name in electrical connection solutions for over 40 years. Known for their Sealed Electrical System, NSPA’s crimp-style heat shrink connectors and terminals are designed to prevent wire corrosion and pull-out, reducing the risk of electrical failure. Built with durability and reliability in mind, these terminals are ideal for harsh environments where a secure, long-lasting connection matters most.
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Nylon Insulated Butt Connector Blue 16-14 AWG - 50 Pack
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Nylon Insulated Butt Connector Blue 16-14 AWG - 50 Pack

ET301B

$12.90 /Pack of 50
Only $0.26 Each

Heat Shrink Spade Terminal Red 22-18 AWG, #10 Stud - 50 Pack
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Heat Shrink Spade Terminal Red 22-18 AWG, #10 Stud - 50 Pack

ET441A10

$20.36 /Pack of 50
Only $0.41 Each

Nylon Insulated Ring Terminal Red 22-18 AWG, #10 Stud - 50 Pack
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Nylon Insulated Ring Terminal Red 22-18 AWG, #10 Stud - 50 Pack

ET303A10

$9.14 /Pack of 50
Only $0.18 Each

Heat Shrink Fully Insulated Female Disconnect 16-14 AWG, 0.250
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Heat Shrink Fully Insulated Female Disconnect 16-14 AWG, 0.250" Tab - 50 Pack

ET425B25

$11.68 /Pack of 25
Only $0.47 Each

Heat Shrink Butt Connector Yellow 12-10 AWG - 25 Pack
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Heat Shrink Butt Connector Yellow 12-10 AWG - 25 Pack

ET401C

$14.71 /Pack of 25
Only $0.59 Each

Heat Shrink Male Disconnect Red 22-18 AWG, 0.250
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Heat Shrink Male Disconnect Red 22-18 AWG, 0.250" Tab - 50 Pack

ET411A25

$21.60 /Pack of 50
Only $0.43 Each

Nylon Insulated Hook Terminal Red 22-18 AWG, #10 Stud - 50 Pack
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Nylon Insulated Hook Terminal Red 22-18 AWG, #10 Stud - 50 Pack

ET305A10

$23.23 /Pack of 50
Only $0.46 Each

Non-Insulated Butted Seam Butt Conn 12-10 AWG - 50 Pack
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Non-Insulated Butted Seam Butt Conn 12-10 AWG - 50 Pack

ET101C

$17.19 /Pack of 50
Only $0.34 Each

Heat Shrink Female Disconnect Red 22-18 AWG, 0.250
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Heat Shrink Female Disconnect Red 22-18 AWG, 0.250" Tab - 50 Pack

ET415A25

$20.56 /Pack of 50
Only $0.41 Each

Nylon Insulated Ring Terminal Blue 16-14 AWG, #6 Stud - 50 Pack
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Nylon Insulated Ring Terminal Blue 16-14 AWG, #6 Stud - 50 Pack

ET303B06

$10.06 /Pack of 50
Only $0.20 Each

Heat Shrink Ring Terminal 8 AWG, 5/16
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Heat Shrink Ring Terminal 8 AWG, 5/16" Stud - 25 Pack

ET403D31

$20.64 /Pack of 25
Only $0.83 Each

22-18 AWG Lead-Free Heat Shrink MultiLink Butt Connector - 50 Pack
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22-18 AWG Lead-Free Heat Shrink MultiLink Butt Connector - 50 Pack

ET701A

$83.39 /Pack of 50
Only $1.67 Each

Orange Twist on Wire Connectors 14-22 AWG - 50 Pack
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Orange Twist on Wire Connectors 14-22 AWG - 50 Pack

WNORANGE

$6.71 /Pack of 50
Only $0.13 Each

Opti-Seal Crystal Clear Heat Shrink Butt Connector with Blue Stripe 16-14 AWG - 50 Pack
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Opti-Seal Crystal Clear Heat Shrink Butt Connector with Blue Stripe 16-14 AWG - 50 Pack

OS55-14-PK

$33.31 /Pack of 50
Only $0.67 Each

Nylon Insulated Snap Plug Red 22-18 AWG, 0.180
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Nylon Insulated Snap Plug Red 22-18 AWG, 0.180" Diameter - 50 Pack

ET317A18

$8.27 /Pack of 50
Only $0.17 Each

Heat Shrink Snap Plug Receptacle 16-14 AWG, 0.157
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Heat Shrink Snap Plug Receptacle 16-14 AWG, 0.157" Diameter - 50 Pack

ET418B15

$28.96 /Pack of 50
Only $0.58 Each

Nylon Insulated Ring Terminal Blue 16-14 AWG, #8 Stud - 50 Pack
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Nylon Insulated Ring Terminal Blue 16-14 AWG, #8 Stud - 50 Pack

ET303B08

$12.31 /Pack of 50
Only $0.25 Each

Nylon Insulated Female Quick Disconnect Blue 16-14 AWG, 0.187
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Nylon Insulated Female Quick Disconnect Blue 16-14 AWG, 0.187" Tab - 50 Pack

ET315B18

$29.07 /Pack of 50
Only $0.58 Each

Nylon Insulated Ring Terminal Blue 16-14 AWG, #10 Stud - 50 Pack
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Nylon Insulated Ring Terminal Blue 16-14 AWG, #10 Stud - 50 Pack

ET303B10

$13.56 /Pack of 50
Only $0.27 Each

12-10 AWG Lead-Free Heat Shrink MultiLink Butt Connector - 50 Pack
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12-10 AWG Lead-Free Heat Shrink MultiLink Butt Connector - 50 Pack

ET701C

$103.96 /Pack of 50
Only $2.08 Each

Instant Auto-Electric Connector Blue 16-14 AWG - 50 Pack
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Instant Auto-Electric Connector Blue 16-14 AWG - 50 Pack

ET351B

$22.39 /Pack of 50
Only $0.45 Each

Nylon Insulated Spade Terminal Red 22-18 AWG, #10 Stud - 50 Pack
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Nylon Insulated Spade Terminal Red 22-18 AWG, #10 Stud - 50 Pack

ET341A10

$12.77 /Pack of 50
Only $0.26 Each

Heat Shrink Fully Insulated Female Disconnect 22-18 AWG, 0.250
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Heat Shrink Fully Insulated Female Disconnect 22-18 AWG, 0.250" Tab - 50 Pack

ET425A25

$30.09 /Pack of 50
Only $0.60 Each

Heat Shrink Ring Terminal 12-10 AWG, 1/4
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Heat Shrink Ring Terminal 12-10 AWG, 1/4" Stud - 50 Pack

ET403C25

$25.11 /Pack of 50
Only $0.50 Each

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