{"id":78,"date":"2022-08-25T14:31:04","date_gmt":"2022-08-25T05:31:04","guid":{"rendered":"https:\/\/hem.co.jp\/global\/?page_id=78"},"modified":"2025-08-26T14:23:02","modified_gmt":"2025-08-26T05:23:02","slug":"e-special-b1-b2","status":"publish","type":"page","link":"https:\/\/hem.co.jp\/global\/e-special-b1-b2","title":{"rendered":"Bullet terminal series for automotive repair B-1\/B-2, B-1-24K\/B-2-24K"},"content":{"rendered":"\n
\n
\n

Professional quality bullet terminals for automotive repair<\/h1>\n<\/div>\n<\/div>\n\n\n\n
\n
\n

Bullet terminal series for automotive repair
B-1\/B-2,B-1-24K\/B-2-24K<\/h2>\n<\/div>\n<\/div>\n\n\n\n
\n
\n

\u2193 How to Crimp Wire Bullet Terminals<\/a><\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n
\nTrusted quality backed by a long tradition and extensive delivery record\u2014recognized by professionals\n<\/div>\n\n\n\n
\n
\n

Engineered exclusively for automotive repair parts, our \u201cB-1\u201d and \u201cB-2\u201d series bullet terminals are built to endure the harsh conditions of the automotive environment. With a commitment to Made in Japan quality and fully in-house production, we deliver high-performance terminals that meet the rigorous demands of professionals. Our consistent use of domestic materials and in-house manufacturing ensures superior quality and reliability, earning high acclaim both in Japan and abroad.<\/p>\n<\/div>\n\n\n\n

\n
\"\"
Leaflet from the time of founding<\/figcaption><\/figure><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
\n
\n

\"MADE IN JAPAN\" \u2013 a mark of trust and reliability<\/strong><\/h3>\n\n\n\n
\n
\n

Every stage\u2014from design and development to production\u2014is handled in-house, allowing us to achieve outstanding product quality and reliability. With over 50 years of proven performance, especially in the automotive aftermarket, our products are proudly Made in Japan.<\/p>\n<\/div>\n\n\n\n

\n
\"\"<\/figure><\/div><\/div>\n<\/div>\n\n\n\n
\n
\n
\n
\n
\"\"<\/figure><\/div><\/div>\n\n\n\n
\n
\"\"<\/figure><\/div><\/div>\n<\/div>\n\n\n\n

To meet the professional demands for both \u201cquality\u201d and \u201cdurability,\u201d both male and female terminals are designed and developed in-house.<\/p>\n<\/div>\n<\/div>\n\n\n\n

A professional-use model designed exclusively for automotive repair applications<\/strong><\/h3>\n\n\n\n

Developed specifically for automotive repair applications, HERO Electric\u2019s bullet terminals are designed with work efficiency in mind. As a specialized manufacturer of crimp-type repair terminals for the automotive aftermarket, we have infused our extensive experience into every detail of this professional-use model.<\/p>\n\n\n\n

\n
\n

<\/i>Designed for easy and secure connection\/disconnection during maintenance. The locking mechanism can be released without damaging the wiring.<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

<\/i>The terminals are pre-formed to ensure smooth crimping with hand tools, resulting in a clean and reliable finish.<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n
<\/div>\n\n\n
\n
\"\"<\/figure><\/div>\n\n
\n
\"\"<\/figure><\/div>\n\n\n

Why Hero Electric \"B-1\" \"B-2\" can gain \"trust\" and \"support\" from professional mechanics ?<\/strong><\/p>\n\n\n\n

<\/i>Comparison of Crimping Conditions: With Pre-Formed Terminals (Our Product) vs. Without Pre-Forming (Standard General-Purpose Product)<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

When you crimp electric wire to a terminal with a hand tool, you can preform the terminal to reduce the slope of the terminal, which is a weakness of the hand tool. This allows \u201clight\u201d and \u201csecure\u201d crimping, realizing reduced working time and a good finish.<\/p>\n<\/div>\n<\/div>\n\n\n\n

\n\n\n\n
<\/div>\n\n\n\n

Developed with a focus on maximizing performance<\/h3>\n\n\n\n

Designed for professional mechanics, our terminals pursue optimal electrical conductivity from the early development stage. Careful attention to materials, thickness, and surface area enables high-conductivity performance.<\/p>\n\n\n\n

\n
\n

<\/i>The female bullet terminal (Part No. B-2) is designed with a narrower seam and a larger contact surface area to enhance conductivity. This design improves the overall fit and contact area with the male bullet terminal (Part No. B-1).<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

<\/i>By increasing the material thickness, the terminal achieves both excellent conductivity and enhanced shape retention. In addition, we use Type 1 brass (Alloy No. JIS C 2600), which has the highest copper content among common brass materials, as the base material for the bullet terminals.<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

<\/i>Chemical compositiions of brass materials<\/p>\n\n\n\n

\"\"<\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
\n
\n

Meticulous Surface Finishing with Attention to Every Detail<\/strong><\/h3>\n\n\n\n

To maintain high quality, even surface plating is carefully executed. Post-pressing, terminals are treated with either bright tin plating or 24K gold plating\u2014ensuring not only the surface but also the cut edges are protected, helping prevent corrosion and maintain conductivity.<\/p>\n\n\n\n

\n
\n
\"\"<\/figure><\/div>\n\n\n

To prevent corrosion and oxidation\u2014both of which can lead to decreased conductivity\u2014plating the cut surface (end face) is a critical process.<\/p>\n\n\n

\n
\"\"<\/figure><\/div><\/div>\n<\/div>\n\n\n\n

Beneficial advice for crimping bullet terminals<\/h4>\n\n\n\n

A crimping tool used for crimping terminals, as well as preform\/non-preform of the product itself, has a significant effect on the good finish of bullet terminal crimping. Hero Electric crimping tool (B-14 [discontinued] and FRH-07 [discontinued] ) delivers smooth and reliable crimping by buffing the tooth form which influences the crimp performance.<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n
\nSpecification<\/span>\n<\/div>\n\n\n\n\n\t\n\t\t\n\t\t\n\t<\/tr>\n\t\n\t\t\n\t<\/tr>\n\t\n\t\t\n\t<\/tr>\n\t\n\t\t\n\t<\/tr>\n\t\n\t\t\n\t<\/tr>\n\t\n\t\t\n\t<\/tr>\n\t\n\t\t\n\t<\/tr>\n\t\n\t\t\n\t<\/tr>\n\t\n\t\t\n\t<\/tr>\n\t\n\t\t\n\t<\/tr>\n\t\n\t\t\n\t<\/tr>\n\t\n\t\t\n\t<\/tr>\n\t\n\t\t\n\t<\/tr>\n\t\n\t\t\n\t<\/tr>\n\t\n\t\t\n\t<\/tr>\n\t\n\t\t\n\t<\/tr>\n<\/table>\n\n\n\n
\nInstalled examples on actual vehicles \u2013 Bullet Terminals (Models: B-1, B-2 \/ B-1-24K, B-2-24K) <\/span>\n<\/div>\n\n\n\n
\n
\n
\"\"
Bullet terminals (Models: B-1, B-2) \u2013 Tin-Plating (gloss)<\/figcaption><\/figure><\/div><\/div>\n\n\n\n
\n
\"\"
Bullet terminals (Models: B-1-24K, B-2)-24K \u2013 24K Plating (gold plating)<\/figcaption><\/figure><\/div><\/div>\n<\/div>\n\n\n\n
\nKey Features of Waterproof Insulating Sleeves (Models: B-3W \/ B-4W) for Bullet Terminals<\/span>\n<\/div>\n\n\n\n

The internally contoured design of the waterproof insulation sleeve features a three-dimensional shape that allows it to closely fit both the wire and the mating waterproof sleeve, effectively preventing water intrusion from external sources.<\/p>\n\n\n\n

\n
\n

<\/i>Comparison: Waterproof sleeves (B-3W \/ B-4W) vs. Standard sleeves (B-3 \/ B-4)<\/p>\n\n\n

\n
\"\"<\/figure><\/div><\/div>\n<\/div>\n\n\n\n
\nInstalled examples on actual vehicles \u2013 Waterproof Insulating Sleeves for Bullet Terminals (Models: B-3W \/ B-4W)<\/span>\n<\/div>\n\n\n\n

Product installed in a TOYOTA LEXUS [CT200h] (Model Code: DAA-ZWA10) with close-up view<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

Product installed in a SUBARU LEVORG (Model Code: DBA-VM4) with close-up view<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n
\n
\"\"<\/figure><\/div><\/div>\n<\/div>\n\n\n\n
\n
\n
\nHow to Crimp Wire Bullet Terminals<\/span>\n<\/div>\n\n\n\n
How to Crimp Wire Bullet Terminals in an Easy-to-Understand Way<\/h5>\n\n\n\n
\n
\n

In the past, wire bullet terminals and crimping tools were for professional use, but nowadays they are increasingly being used by the general public.
Crimping a wire bullet terminal requires proper knowledge and skills. Incomplete crimping can lead to poor contact and broken wires.
That's why Hero Electric has prepared this manual with the concept of \"making it easy for anyone to understand\".
This time, the male bullet terminal (Part No. B-1) is used as an example.<\/p>\n<\/div>\n\n\n\n

\n
\"\"<\/figure><\/div><\/div>\n<\/div>\n\n\n\n

Step 1 : Preparing the product<\/h4>\n\n\n\n
\n
\n

There are two types of Hero Electric crimping tools that can crimp bullet terminals: FRH-07 [discontinued] and B-14 [discontinued] .The FRH-07 is used here.<\/p>\n\n\n\n

FRH-07[discontinued]<\/h5>\n\n\n
\n
\"\"<\/figure><\/div><\/div>\n<\/div>\n\n\n\n
Compatible product<\/h5>\n\n\n\n
\n

Photo<\/b><\/td>\n\t\tProduct<\/b><\/td>\n\t\tParts number<\/b><\/td>\n\t\tSpecifications<\/b><\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\tMale bullet terminal<\/td>\n\t\tB-1<\/a><\/td>\n\t\tApplicable wire[mm2<\/sup>]0.50\uff5e2.00\n [AWG]20~14<\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\tFemale bullet terminal<\/td>\n\t\tB-2<\/a><\/td>\n\t\tApplicable wire[mm2<\/sup>]0.50\uff5e2.00\n [AWG]20~14<\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\tMale Bullet Terminal with 24K Gold Plating<\/td>\n\t\tB-1-24K<\/a><\/td>\n\t\tApplicable wire[mm2<\/sup>]0.50\uff5e2.00\n [AWG]20~14<\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\tFemale Bullet Terminal with 24K Gold Plating<\/td>\n\t\tB-2-24K<\/a><\/td>\n\t\tApplicable wire[mm2<\/sup>]0.50\uff5e2.00\n [AWG]20~14<\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\t Insulating Sleeve<\/td>\n\t\tB-3<\/a><\/td>\n\t\tWire Coating Outer Diameter \u03c62.5\u339c<\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\t Insulating Sleeve<\/td>\n\t\tB-4<\/a><\/td>\n\t\tWire Coating Outer Diameter \u03c62.5\u339c<\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\tInsulation Sleeve\n(Post-Assembly Type)<\/td>\n\t\tB-3A<\/a><\/td>\n\t\tWire Coating Outer Diameter \u03c62.5\u339c<\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\tInsulation Sleeve\n(Post-Assembly Type)<\/td>\n\t\tB-4A<\/a><\/td>\n\t\tWire Coating Outer Diameter \u03c62.5\u339c<\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\tInsulation Sleeve\n(Post-Assembly Type)<\/td>\n\t\tB-3AL<\/a><\/td>\n\t\tWire Coating Outer Diameter \u03c63.5\u339c<\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\tInsulation Sleeve\n(Post-Assembly Type)<\/td>\n\t\tB-4AL<\/a><\/td>\n\t\tWire Coating Outer Diameter \u03c63.5\u339c<\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\tWaterproof Insulating Sleeve<\/td>\n\t\tB-3W<\/a><\/td>\n\t\tApplicable wire AV0.85\nWire Coating Outer Diameter \u03c62.5\u339c<\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\tWaterproof Insulating Sleeve<\/td>\n\t\tB-4W<\/a><\/td>\n\t\tApplicable wire AV0.85\nWire Coating Outer Diameter \u03c62.5\u339c<\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\tWaterproof Insulating Sleeve(S)<\/td>\n\t\tB-3WS<\/a><\/td>\n\t\tApplicable wire AV0.5\nWire Coating Outer Diameter \u03c62.2\u339c<\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\tWaterproof Insulating Sleeve(S)<\/td>\n\t\tB-4WS<\/a><\/td>\n\t\tApplicable wire AV0.5\nWire Coating Outer Diameter \u03c62.2\u339c<\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\tWaterproof Insulating Sleeve(L)<\/td>\n\t\tB-3WL<\/a><\/td>\n\t\tApplicable wire AV1.25-2.0\nWire Coating Outer Diameter \u03c62.9\u339c<\/td>\n\t<\/tr>\n\t
<\/a><\/td>\n\t\tWaterproof Insulating Sleeve(L)<\/td>\n\t\tB-4WL<\/a><\/td>\n\t\tApplicable wire AV1.25-2.0\nWire Coating Outer Diameter \u03c62.9\u339c<\/td>\n\t<\/tr>\n\t
\n\t\n\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t
<\/td>\n\t\t\t<\/td>\n\t\t\t<\/td>\n\t\t\t<\/td>\n\t\t\t<\/td>\n\t\t\t<\/td>\n\t\t<\/tr>\n\t\t
Male bullet terminal<\/td>\n\t\t\tFemale bullet terminal<\/td>\n\t\t\tMale bullet terminal<\/td>\n\t\t\tFemale bullet terminal<\/td>\n\t\t\tinsulation sleeve<\/td>\n\t\t\tinsulation sleeve<\/td>\n\t\t<\/tr>\n\t\t
Tin-plating (gloss)<\/td>\n\t\t\t24K plating (gold plating)<\/td>\n\t\t<\/tr>\n\t\t
B-1<\/td>\n\t\t\tB-2<\/td>\n\t\t\tB-1-24K<\/td>\n\t\t\tB-2-24K<\/td>\n\t\t\tB-3<\/td>\n\t\t\tB-4<\/td>\n\t\t<\/tr>\n\t<\/tbody>\n<\/table>\n<\/figure>\n\n\n\n

Step 2: Cutting wire when old terminal is still attached<\/h4>\n\n\n\n
\n
\n

The crimping tool is equipped with a cutter to cut the wire, so you can work without nippers or other tools.<\/p>\n\n\n

\n
\"\"<\/figure><\/div><\/div>\n<\/div>\n\n\n\n

Step 3: Pass the insulation sleeve through the electric wire.<\/h4>\n\n\n\n
\n
\n

If the terminal is attached first, the sleeve will not be able to pass through, so the insulation sleeve should be passed through first. (In this manual, the male terminal is crimped at first, but you may crimp the female terminal first.)<\/p>\n\n\n

\n
\"\"<\/figure><\/div><\/div>\n<\/div>\n\n\n\n

Step 4: Peeling off the INS (wire insulation)<\/h4>\n\n\n\n
\n
\n

Select the teeth according to the thickness of the core wire. The length of the INS (wire insulation) to strip should be about 1 mm longer (4-5 mm) than the crimped part of the terminal.<\/p>\n\n\n

\n
\"\"<\/figure><\/div><\/div>\n<\/div>\n\n\n\n

Step 5: Crimping the core wire of the electric wire (1)<\/h4>\n\n\n\n
\n
\n

Lightly pinch and fix the center of the wire core crimping part of the wire bullet terminal (Part No. B-1), and insert the wire into the wire core crimping part.<\/p>\n\n\n

\n
\"\"<\/figure><\/div><\/div>\n<\/div>\n\n\n\n

Step 6: Crimping the core wire of the electric wire (2)<\/h4>\n\n\n\n
\n
\n

Crimp the core wire by grasping the tool tightly until \"CLOSE\u2192\u2190HERE\" is closed.<\/p>\n\n\n

\n
\"\"<\/figure><\/div><\/div>\n<\/div>\n\n\n\n

Step 7: Crimping the INS (wire insulation)<\/h4>\n\n\n\n
\n
\n

Crimp the INS (wire insulation) by placing it between the crimping teeth.<\/p>\n\n\n

\n
\"\"<\/figure><\/div><\/div>\n<\/div>\n\n\n\n

Step 8: Checking the finish and placing the insulation sleeve in a position<\/h4>\n\n\n\n

Insert the insulation sleeve into the terminal side. Make sure that the wire insulation crimped part of the terminal has been placed in the specified position for the insulation sleeve as shown in the following figure:<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n
\n
\n
Crimping Tool \"FRH-07\" Two Types of Tooth shapes in the Wire Insulation Part<\/h5>\n\n\n\n
\n
\n

When crimping the insulation presser of the terminal onto the wire insulation, use the \"M-shaped\" tooth profile for the insulating part.
When crimping a waterproof rubber plug (wire seal), use the \"round-type\" tooth profile for the insulating part.<\/p>\n<\/div>\n\n\n\n

\n
\"\"<\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
\"\"<\/figure><\/div><\/div>\n\n\n\n
\n