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Changzhou Fenglan New Materials Co., Ltd.

Bullet Connector Terminal

-- Steady & Reliable Manufacturer --

Bullet Connector Terminal Overview

A bullet connector terminal is an inline single-pole connector consisting of a cylindrical male pin and a matching female socket that mate with a push-fit snap action. The smooth, rounded bullet profile guides the pin into the socket without tools, making this connector one of the fastest single-wire joining methods available for low-to-medium current circuits.

Fenglan's bullet connectors are manufactured in tin-plated electrolytic copper with PVC or nylon insulation, rated to 600 V and up to 30 A. Standard diameters are 2.8 mm, 3.9 mm, 4.0 mm, and 6.0 mm, covering wire sizes from 0.5 mm² to 6 mm². Each pair provides a secure, fully insulated inline joint that resists vibration pull-out without additional locking hardware.

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Specification

Connector TypeBullet (male pin + female socket, inline push-fit)
Standard Bullet Diameters2.8 mm / 3.9 mm / 4.0 mm / 6.0 mm
Wire Range0.5 mm² – 6 mm² (AWG 20 – AWG 10)
Rated Voltage600 V AC/DC
Rated CurrentUp to 30 A (6.0 mm bullet)
Contact MaterialElectrolytic copper, tin-plated
Insulation MaterialPVC (standard); nylon PA66 (high-temp)
Operating Temperature–40 °C to +105 °C
Mating Cycles≥ 500 connect/disconnect cycles
Contact Resistance≤ 5 mΩ (initial, per IEC 60512)
StandardsUL 486A-486B, CE, RoHS
MOQ100 pairs; 50 pairs sample

Application

  • Automotive wiring harnesses — aftermarket lighting, horn, and accessory circuits requiring field-spliced in-line joints
  • Motorcycle and powersports wiring — handlebar switch, indicator, and ignition circuit joints subject to vibration
  • Agricultural and off-road machinery — sensor and solenoid wiring that must be disconnected for component replacement in the field
  • Home appliance repair — inline wire joining for washing machine, dishwasher, and refrigerator harness repair without soldering
  • Security and alarm systems — siren, sensor, and power supply lead connections in enclosures requiring periodic servicing
  • LED lighting installations — low-voltage DC feed connections inside luminaire bodies and driver modules
  • RC models and hobby electronics — battery and motor lead connections requiring tool-free field swapping

Advantage

  • Tool-free push-fit mating — the bullet profile self-aligns and snaps into the socket with finger pressure; no screwdriver, wrench, or special tool required for connection or disconnection
  • Vibration-resistant snap-lock — the female socket's internal spring contacts grip the bullet pin with consistent retention force, maintaining electrical contact under automotive-level vibration without additional locking clips
  • Fully insulated inline joint — PVC or nylon barrel covers the entire crimp and mated contact zone, eliminating bare metal exposure in tight wire bundles or damp environments
  • Low contact resistance — ≤ 5 mΩ initial contact resistance prevents voltage drop and heat build-up in high-cycle or continuous-current applications
  • High mating cycle life — rated ≥ 500 connect/disconnect cycles without measurable contact resistance increase, suitable for service-access panels opened multiple times per year
  • Universal diameter compatibility — 2.8, 3.9, 4.0, and 6.0 mm bullet sizes cover the full range of automotive and light industrial wire sizes with a single connector family

Payment & Shipping

We accept T/T (bank transfer), L/C at sight, PayPal (samples), and Western Union. A 30% deposit is required to confirm production, with the balance paid before shipment.

Standard lead time is 7–15 business days for regular orders; prototype samples ship within 3–5 days. We ship worldwide via DHL, FedEx, UPS, sea freight (FCL/LCL), and air freight. FOB Changzhou and CIF terms are both available. All goods are packed in export-standard cartons with foam padding or wooden crates for heavy items. A commercial invoice, packing list, and COA are provided with every shipment. For large OEM orders, customized packaging and private-label options are available upon request.

  • Q: Are bullet connectors polarity-protected?
  • A: Standard bullet connectors are not polarity-keyed — a male pin mates with any matching-diameter female socket regardless of which wire carries positive or negative. For polarised applications, use colour-differentiated bullets (red for positive, black for negative), or specify our keyed bullet housing variants that physically prevent reverse insertion.
  • Q: What is the maximum current rating for bullet connectors?
  • A: Current capacity depends on bullet diameter and wire size. Our 2.8 mm bullets are rated up to 10 A; 3.9 mm and 4.0 mm bullets up to 20 A; and 6.0 mm bullets up to 30 A. Always match the bullet diameter to the wire size — using an oversized bullet on a small wire produces a poor crimp and reduces current capacity to that of the wire, not the terminal.
  • Q: Can bullet connectors be used outdoors?
  • A: Standard PVC-insulated bullet connectors are splash-resistant but not waterproof. For outdoor or wet-location use, apply self-amalgamating tape over the mated pair, or specify our heat-shrink lined bullet connectors that form a watertight seal when the barrel is heated after crimping.
  • Q: Do bullet connectors require a special crimping tool?
  • A: Insulated bullet connectors up to 6 mm² use the same standard ratchet crimper and colour-coded dies (red/blue/yellow) used for all insulated crimp terminals. For uninsulated bullets above 6 mm², use a hex or indent crimp tool matched to the barrel diameter. We can advise on the correct die selection for each size.
Changzhou Fenglan New Materials Co., Ltd.
Changzhou Fenglan New Materials Co., Ltd.
Changzhou Fenglan New Materials Co., Ltd.
Changzhou Fenglan New Materials Co., Ltd.
Changzhou Fenglan New Materials Co., Ltd.
Changzhou Fenglan New Materials Co., Ltd.
Changzhou Fenglan New Materials Co., Ltd.
Changzhou Fenglan New Materials Co., Ltd.
ABOUT US
Quality is Our Core Competitiveness
Changzhou Fenglan New Materials Co., Ltd.
Founded in 2010, As China Bullet Connector Terminal Manufacturers and Bullet Connector Terminal Company. we are dedicated to manufacturing precision parts for automotive, industrial, and electrical applications. Backed by advanced manufacturing and R&D, we provide high-quality products and trusted solutions to our clients. We provide a wide selection of components to meet diverse industry needs: Electric Shafts: Drive shafts, coil motor shafts, servo motor shafts, water pump motor shafts, industrial motor shafts, and magnetic levitation motor shafts. Hardware: Precision parts for medical equipment, water heater coils, plumbing fittings, and various gas springs. Our commitment is to support our customers with reliable performance and long-term value.
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