Terminals,
Kits and Tools
Glossary of Terminals and Tools Terms
Ring Tongues
Multi-Stud Ring Tongues
Standard Forks
Block Forks
Flanged Block Forks
Locking Forks
Butt Connectors
Female Disconnects
Male Disconnects
Flags
Multi-Stack Disconnects
Adapters
High Temperature
Closed End Connectors
48
53
78
79
85
93
98
107
113
121
125
125
126
128
131
Parallel Connectors
Pin Terminals
3M Highland Bagged Terminals
™
TERMINALS, KITS AND TOOLS
133
134
135
142
143
146
146
Kits
Tools
Terminal Stud Size Chart
American Wire Gauge
For more than 30 years, 3M has been a leading supplier
of Scotchlok terminals, disconnects, connectors and tools
for high performance use in the assembly and maintenance
of electrical systems. Thousands of satisfied customers
know our products for:
• Effective and reliable performance, UL Listed and
CSA Certified where appropriate.
• Variety of types, sizes and materials meeting a broad
application range, including the demands of temperature
and weather.
• Design features assuring easy installation of 3M
products—positive and easy wire insertion, elimination
of strand hang-ups and wire twisting, and easy
insulation entry.
These are a few of the characteristics that make the
installer’s job easier.
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47
FREquEnTLy ASKED quESTionS
What does the insulation grip do?
Which 3M tools can I use with 3M terminals?
What’s the difference between insulated and fully
insulated disconnects?
What temperatures do 3M terminals withstand?
The insulation grip provides a “second” crimp on the wire insulation providing additional
wire strain relief. It’s excellent for high vibration applications.
The handy reference guide on pages 143-144 gives you a variety of choices of tools to use
with 3M terminals.
Insulated disconnects have barrel insulation only and fully insulated disconnects are
insulated from the barrel to the receptacle/tab.
Non-insulated 3M terminals withstand temperatures up to 347°F (175°C). Insulated 3M
terminals withstand temperatures up to 221°F (105°C).
Glossary of Terminals
and Tools Terms
AdApters
To interconnect two connectors already attached to wires.
Block Fork
Same strength as the fork, but designed to use in terminal
block because sides lie flat against barrier portion of terminal
block.
Bullet style
Similar advantages as disconnects. Gives reliable in-line
connection because parts are made to have holding friction
when joined. Usually for automotive use.
Butt
Uses chamfered barrel ends to provide fast, easy wire insertion
from both ends and a built-in wire stop for correct positioning.
Must be crimped at both ends.
closed-end
Used in situations requiring pigtail of two or more wires.
FlAnged Fork
Gives the benefit of both the block and locking forks. Stays
secure should screw loosen.
Fork
Allows rapid connection of wire. Usually used on free-standing
studs, because of wider tongues.
locking Fork
The spring-like tongue locks in place around the stud even
when mount screw is not tightened. Extra force is required to
remove from stud.
pArAllel
Similar to butt with overlapped wires and single crimp in center
of connector. Used where space is limited.
pins
For installation in compression blocks. Used in Europe for
terminating stranded wire.
Quick connect (disconnect)
Attached to mating part by tongue of female part slipping
over male tab. Use of dents and rolled edges on female part
provides excellent holding force while allowing easy and quick
disconnect.
ring
The standard style of tongue. The safest and most reliable. It
cannot be removed unless mounting screw is removed.
tAB
Uses mounting hole for rivet or screw.
tAp
No wire stripping is necessary, just lay wire in connector and
crimp. Connection is made.
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PHonE 800-245-3573
Standard Terminal Construction
1
1
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 flash-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.
TERMINALS, KITS AND TOOLS
• Glossary of Terminals and Tools Terms
2
4
6
8
7
10
3
Vinyl
Insulated
5
4
6
8
9
2
3
Nylon Insulated
with Insulation Grip
5
7
9
10
Barrel Styles
non-insulated Butted Seam
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 flexing 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
Used where insulated barrel is necessary and desirable.
Terminal consists of brazed or butted part with flared, 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 flared 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.
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
confines during or after crimping. Maximum temperature
for bare terminals: 347°F (175°C).
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
Vinyl insulated Brazed and Butted Seams
FAX 800-245-0329
49
Industry standard color coding indicates wire range.
Insulators are rated at a continuous operating temperature
range from -40°F to 221°F (-40°C to 105°C).
UL Listed and CSA Certified for 600V building wire and
1000V signs and lighting fixtures (luminaries).
Correct crimping is important to assure
a strong connection.
nylon insulated Butted Seam with insulation Grip
Electrical Crimp
Mechanical Crimp
Used where insulated barrel and positive insulation grip are
necessary or desirable. Terminal consists of butted seam
part with flared, seamless brass sleeve securely attached
and covered with flared, molded nylon sleeve. Wire
insulation positions itself against funnel portion of brass
sleeve. Crimping barrel and flared portion of sleeve provide
excellent electrical contact plus mechanical stress relief at
junction of insulation and barrel. Positioning crimp tool is
nearly mistake proof due to a “step” in nylon insulation.
Industry standard color coding indicates wire range.
Insulators are rated at a continuous operating temperature
range from -40°F to 221°F (-40°C to 105°C).
UL Listed and CSA Certified for 600V building wire and
1000V signs and lighting fixtures (luminaries).
Insulated Terminals and Connectors:
Correct
Incorrect
non-insulated Terminals and Connectors:
Indent should be opposite the barrel seam.
Heat Shrink Terminals, Connectors
and Disconnects
3M Heat Shrink pre-insulated terminals, connectors and
disconnects protect against the most challenging of environments,
making the best moisture protection available. They offer
several advantages over conventional unsealed products.
™
installation Procedure
Funnel Barrel Feature provides an excellent electrical and
mechanical connection.
• Funnel design guides wire into position.
Corrosion Resistance
The adhesive-lined heat shrink material, when properly
crimped and shrunk, provides a seal resistant to water, salt,
steam and other related contaminants.
improved Mechanical Performance
• No wire strand hang-up as the wire is inserted, giving
a fast, positive installation.
The adhesive-lined heat shrink tubing adheres, when
shrunk, to both the connector and the wire insulation
providing improved pullout strength and strain relief.
Durable Heat Shrink Tubing
• Wire is in place, ready for crimping.
Tough heat shrink tubing effectively resists abrasion,
scoring, cut-through, and the effects of long-term aging.
Versatile and Easy to use
3M heat shrink terminals, splices and disconnects are
available in wire sizes 22–10 AWG and can be installed
easily with a recommended tool and heat source. The
connectors are color-coded for wire range identification
and the transparent tubing allows for visual inspection.
For maximum crimping performance, barrel of connector
must be properly indexed in the crimp tool station.
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PHonE 800-245-3573
Application Procedure for Heat Shrink Products:
1. Strip wires to appropriate length as indicated on package label.
TERMINALS, KITS AND TOOLS
• Glossary of Terminals and Tools Terms
2. Insert wire into terminal and crimp with correct station
of a recommended tool.
3. Apply heat with a recommended heat source.
High Temperature Terminals
and Connectors
3M high temperature terminals and connectors are
constructed of steel with a nickel plating. Their temperature
rating for continuous use at 900°F (482°C) makes them
perfect for use in ovens, motors, light fixtures and other
applications where other connectors would corrode or melt.
There is no applicable UL or CSA standard for high
temperature steel parts.
Standard Crimp Terminal
and Connector Specifications
Materials
Crimp terminals and connectors are to be burr-free,
annealed and bright-tin plated ETP copper. Barrels shall be
0.25" long with brazed seams where specified. Insulation
grip sleeves are to be tin-plated brass and attached securely
to the barrel. Terminal insulators are to be molded
polyvinyl chloride or nylon, UL Listed and CSA Certified
for 600V in building wire and 1000V in signs and lighting
fixtures (luminaries). Connector insulators are to be
extruded polyvinyl chloride or nylon with a temperature
rating of 221°F (105°C).
Construction
All insulated terminals are to have funnel entry construction
to prevent strand hang-up and a crimp ridge for proper tool
location. Nylon insulated terminals and connectors are
to have butted seam barrels with insulation grip sleeves.
All terminal barrels are to have multiple “V” grooves for
maximum conductor retention.
Length
“L”
Stud Size
Barrel I.D.
Width
“W”
Clearance
“C”
Barrel
Length
“E”
Note: All dimensions are measured in inches.
Maximum Insulation
Diameter
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