Klein Tools - 4" Insulated Screwdriver #1 Square Tip | A-661-4-INS
Klein Tools - 4" Insulated Screwdriver #1 Square Tip | A-661-4-INS
Klein Tools - 4" Insulated Screwdriver #1 Square Tip | A-661-4-INS

Klein Tools - 4" Insulated Screwdriver #1 Square Tip | A-661-4-INS

$45.51
$45.51
Vendor: Klein Tools
SKU: A-661-4-INS

The Klein Tools Insulated Screwdriver No.1 Square Tip with 4" Round Shank (661-4-INS) is built for professional electrical work where safety and performance are critical. Featuring a 1000V-rated insulated design, durable two-layer moulded insulation, and a precision square-recess tip, this screwdriver helps...

Read moreRead less

Ins S/Driver. No.1 Square Tip. 4IN Shank | A-661-4-INS

The Klein Tools Insulated Screwdriver No.1 Square Tip with 4" Round Shank (661-4-INS) is built for professional electrical work where safety and performance are critical. Featuring a 1000V-rated insulated design, durable two-layer moulded insulation, and a precision square-recess tip, this screwdriver helps reduce the risk of injury when working near energized sources while delivering the strength and comfort expected from Klein Tools.

► Key Features

  • 1000V-rated insulated screwdriver for electrical safety
  • Durable two-layer moulded insulation meets or exceeds ASTM and IEC standards
  • No.1 square-recess tip for secure fastener engagement
  • Cushion-Grip™ handle provides greater torque and user comfort
  • Round shank design improves accessibility in tight spaces
  • Custom US-made induction-hardened steel blade
  • Flame-retardant and impact-resistant handle construction
  • Clearly marked with the international 1000V insulation symbol
  • Made in the USA

► Technical Specifications

  • Type: Insulated Square-Recess Screwdriver
  • Tip Type: Square
  • Tip Size: #1
  • Shank Length: 4" (10.2cm)
  • Shank Type: Round
  • Voltage Rating: 1000V
  • Material: Induction-Hardened Steel
  • Handle Material: High-Dielectric Plastic
  • Overall Length: 8.313" (21.1cm)
  • Standards: IEC 60900, ASTM F1505
  • Insulated: Yes
  • Weight: 91g
  • Brand: Klein Tools
  • Part No.: 661-4-INS

► Why Tradies Grab This

A trusted insulated driver for switchboards, control panels, and electrical maintenance work where safety compliance matters. The Cushion-Grip™ handle provides excellent control while the insulated construction adds an extra layer of protection around energized equipment.

► Industrial Shed’s Trade Guarantee – Shop with Confidence

  • We Stand By Our Gear: Professional-grade tools built for demanding worksites.
  • Loyalty Matters: Trade account perks for repeat customers.
  • Real Support, No Runaround: Backed by people who understand workshop and site gear.
  • Fast Delivery, Every Time: Get what you need without delays.

► Stock won’t last — get yours now at Industrial Shed!

Product size
102mm Shaft
Product weight
800 g
Material
Steel
Category
Screwdriving & Bits
Shipping calculated at checkout

Enter your delivery address at checkout to see the cost.

Subtotal: $45.51
Product specifications
Category
Screwdriving & Bits
Material
Steel
Product size
102mm Shaft
Product weight
800 g
Length
203 mm
Height
32 mm

  • On time, every time

    Delivery across Australia, with tracking sent after dispatch. Ordering a large or heavy item? Ask our team to confirm freight costs and delivery arrangements before you buy.

    Delivery information

  • Secure payments

    Pay through our secure checkout with the card and express payment options available for your order. Review your items, delivery charges and total before confirming payment.

  • 100% happiness guarantee

    Need help after your purchase? Contact our Somerville team with your order number. We can help with product issues and explain your return options, including conditions and exclusions.

    Returns and support
Description  

Ins S/Driver. No.1 Square Tip. 4IN Shank | A-661-4-INS

The Klein Tools Insulated Screwdriver No.1 Square Tip with 4" Round Shank (661-4-INS) is built for professional electrical work where safety and performance are critical. Featuring a 1000V-rated insulated design, durable two-layer moulded insulation, and a precision square-recess tip, this screwdriver helps reduce the risk of injury when working near energized sources while delivering the strength and comfort expected from Klein Tools.

► Key Features

  • 1000V-rated insulated screwdriver for electrical safety
  • Durable two-layer moulded insulation meets or exceeds ASTM and IEC standards
  • No.1 square-recess tip for secure fastener engagement
  • Cushion-Grip™ handle provides greater torque and user comfort
  • Round shank design improves accessibility in tight spaces
  • Custom US-made induction-hardened steel blade
  • Flame-retardant and impact-resistant handle construction
  • Clearly marked with the international 1000V insulation symbol
  • Made in the USA

► Technical Specifications

  • Type: Insulated Square-Recess Screwdriver
  • Tip Type: Square
  • Tip Size: #1
  • Shank Length: 4" (10.2cm)
  • Shank Type: Round
  • Voltage Rating: 1000V
  • Material: Induction-Hardened Steel
  • Handle Material: High-Dielectric Plastic
  • Overall Length: 8.313" (21.1cm)
  • Standards: IEC 60900, ASTM F1505
  • Insulated: Yes
  • Weight: 91g
  • Brand: Klein Tools
  • Part No.: 661-4-INS

► Why Tradies Grab This

A trusted insulated driver for switchboards, control panels, and electrical maintenance work where safety compliance matters. The Cushion-Grip™ handle provides excellent control while the insulated construction adds an extra layer of protection around energized equipment.

► Industrial Shed’s Trade Guarantee – Shop with Confidence

  • We Stand By Our Gear: Professional-grade tools built for demanding worksites.
  • Loyalty Matters: Trade account perks for repeat customers.
  • Real Support, No Runaround: Backed by people who understand workshop and site gear.
  • Fast Delivery, Every Time: Get what you need without delays.

► Stock won’t last — get yours now at Industrial Shed!

Shipping  

Delivery options

We deliver across Australia. Freight costs depend on the item's size, weight and delivery address. Use the freight form above to request a price for this product.

Local delivery and collection

Local delivery is available on the Mornington Peninsula. You can also collect from Factory 1/30 Simcock Street, Somerville VIC 3912. Wait for your collection confirmation before coming in.

Tracking and delivery questions

Tracking details are sent after dispatch. For delivery timing, access requirements or help with a bulky item, call 03 5978 0078.

Read the shipping and delivery policy

Returns  

Start a return

Contact us with your order number and the reason for the return. We will confirm the next steps before you send anything back.

Change of mind

The returns policy allows 14 days from delivery for eligible unused items in their original condition and packaging. Special orders and custom products are excluded from change-of-mind returns. Other exclusions may apply.

Faulty or damaged items

Send photos and a description of the problem to supportHQ@industrialshed.net.au, or call 03 5978 0078.

Read the full returns and refund policy

You May Also Like

Example product title
$45.51
$45.51
Example product title
$45.51
$45.51
Example product title
$45.51
$45.51
Example product title
$45.51
$45.51
Example product title
$45.51
$45.51
Example product title
$45.51
$45.51
Example product title
$45.51
$45.51
Example product title
$45.51
$45.51
Example product title
$45.51
$45.51
Example product title
$45.51
$45.51