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TERMINALS, KITS AND TOOLS • Glossary of Terminals and Tools Terms
Standard Terminal Construction
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Vinyl
Insulated
Nylon Insulated
with Insulation Grip
3M™ Terminals provide a variety of design features assuring
consistently effective, reliable performance and easy installation.
Please refer to the illustrations at the numbered locations
for the attributes described below.
1. One-piece, burr-free construction provides maximum
electrical conductivity. Electrical bright-tin plating gives
maximum corrosion resistance. Annealing relieves stress
points and assures maximum installed strength.
2. Barrel-to-pad transition design minimizes exing and bending.
3. Open-end design permits visual inspection of wire
location before and after crimping.
4. Maximum hold on wire comes from multiple “V” grooves
in #26–4 AWG parts resulting in excellent holding power.
5. Injection molded insulations on terminals are the highest
quality in the industry.
221°F (105°C) rated, tough, resistant electrical grade materials•
Molding ensures consistent wall thickness for maximum •
reliability after crimping
Molding allows funnel barrel construction for easier installation•
Molding offers the crimp ridge and non-slip ridge•
6. Crimp ridge designed for positive location of tool on
terminal barrel, resulting in few miscrimps.
7. Funnel barrel construction provides:
Positive, easy wire insertion•
No hang-ups of wire strands•
Wire twisting not necessary•
8. Nylon-insulated terminals with grip feature a brass
sleeve. Sleeve provides optimum grip on insulation, strain
relief and vibration protection. Brass sleeve is recessed
which provides excellent ash-over protection.
9. Non-slip ridge so tool slides to correct position for a
proper crimp and better workmanship.
10. Beveled leading edge for easy wire insulation entry.
Barrel Styles
Non-Insulated Butted Seam
The most economical terminal—used where special
performance or installation characteristics are not needed.
Beveled mouth facilitates wire insertion. Maximum
temperature for bare terminals: 347°F (175°C).
Non-Insulated Brazed Seam
Beveled mouth facilitates wire insertion. Can be crimped
anywhere on barrel surface. Silver brazed seam will not
open under crimping pressure or operating stresses. Unlike
butted seam parts, stranded wire cannot escape barrel
connes during or after crimping. Maximum temperature
for bare terminals: 347°F (175°C).
Vinyl Insulated Brazed and Butted Seams
Used where insulated barrel is necessary and desirable.
Terminal consists of brazed or butted part with ared, rigid
molded polyvinyl chloride sleeve securely attached and
funneled for easy wire entry. Wire insulation positions
itself against funnel portion of vinyl sleeve thus eliminating
strand hang-up. Crimping barrel and ared portion of
sleeve provide excellent electrical contact plus mechanical
stress relief at junction of insulation and barrel. Insulation
has a non-slip ridge for ease of positioning crimping tool.