Astro Pneumatic Tool 78340

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78340

MODEL: PRODUCT TYPE:

WARNING

MADE IN TAIWAN

Study, understand and follow all instructions provided with this

product. Read these instructions carefully before installing,

operating, servicing or repairing this tool. Keep these instructions

in a safe accessible place.

INTENDED USE OF THE TOOL

DO NOT DISCARD – GIVE TO USER

8PC 3/8" DRIVE NANO

PINLESS UNIVERSAL IMPACT SOCKETS

- SAE

• Pinless design allows a full 360° of freedom for the

universal head to angle and rotate

• Astro’s Nano form factor, up to 11% shorter than

standard low-profile universal impact sockets

• Forged CRO-MO with lifetime warranty

PRODUCT INFORMATION:

Before Use

When unpacking, check the parts diagram and part

number listing on page 2 to make sure all parts are

included. If any parts are missing or damaged, please

call your distributor.

The 78340 Nano Pinless Universal impact Socket Set is

designed to be used with a 3/8" drive impact wrench to drive

hex fasteners. Do not use this tool outside of the designed

intent. Never modify the tool for any other purpose or use.

• U

se of this product can expose you to chemicals

including ethylene glycol, gasoline vapors and

engine exhaust, which are known to the State of

California to cause cancer, birth defects, or

reproductive harm. Always wear ANSI approved

safety equipment, safety glasses and clothing when

using this product. Study, understand, and follow

all instructions provided with this product. Failure

to read and follow all warnings and operating

instructions may result in damages and serious

injury or death.

• Always wear ANSI approved goggles when using

this product. (Users and Bystanders).

• Never use this tool for any application other than

for

which it was designed.

• Only use accessories designed for this tool.

• Never alter or modify this tool in any way.

• Improper operation and/or maintenance of the tool,

modification of the tool, or use of the tool with

accessories not designed for it could result in

serious injury or death.

• Always select the correct accessories of the

correct size and design for the job that you are

attempting to perform.

• Always work in a clean, safe, well-lit, organized and

adequately equipped area.

• Do not begin repairs without assurance that

vehicle is in secure position, and will not move

during repair.

8PC 3/8" DRIVE NANO

PINLESS UNIVERSAL IMPACT SOCKETS - SAE

5/16 3/8 7/16 1/2

9/16

5/8

3/4

11/16

5/16

3/8 7/16

1/2

9/16

5/8

3/4

11/16

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Quick Guide2 pages

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Summary

Intended Use and Safety

Intended Use of the Tool

Guidance on the proper application of the 3/8" drive impact wrench for hex fasteners.

General Safety Precautions

Key warnings and cautions to prevent personal injury and ensure safe product operation.

Before Use

Check parts list on page 2 for completeness; contact distributor for missing or damaged items.

Product Features and Identification

Product Information

Highlights pinless design, Nano form factor, and CRO-MO construction with lifetime warranty.

Parts Breakdown

Detailed list and visual identification of all components included in the socket set.

The Astro Pneumatic Tool Company's Model 78340 is an 8-piece 3/8" Drive Nano Pinless Universal Impact Socket Set, designed for use with a 3/8" drive impact wrench to drive hex fasteners. This set is specifically engineered for professional applications, emphasizing safety, durability, and ease of use.

Function Description:

The primary function of the 78340 Nano Pinless Universal Impact Socket Set is to provide a versatile and robust solution for fastening and unfastening hex fasteners in various mechanical and automotive applications. The "universal" aspect refers to the sockets' ability to pivot and angle, allowing access to fasteners in confined or awkward spaces where a standard rigid socket might not fit. The "pinless" design is a key feature that enhances this versatility, eliminating the need for a retaining pin and allowing the universal head to rotate a full 360 degrees, providing maximum freedom of movement. This makes the set particularly useful for tasks requiring flexibility and maneuverability, such as working on engine components, suspension systems, or other tight areas. The "impact" designation indicates that these sockets are constructed to withstand the high torque and shock loads generated by impact wrenches, making them more durable and less prone to breakage than standard chrome sockets when used with power tools.

Important Technical Specifications:

Model: 78340
Product Type: 8PC 3/8" Drive Nano Pinless Universal Impact Sockets - SAE
Drive Size: 3/8"
Socket Sizes (SAE): The set includes eight common SAE sizes: 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", and 3/4".
Material: Forged CRO-MO (Chrome Molybdenum) steel, known for its high strength, toughness, and resistance to impact, making it ideal for impact-rated tools.
Design: Pinless universal joint design, allowing for a full 360° rotation and angling of the universal head.
Form Factor: "Nano" form factor, which means the sockets are up to 11% shorter than standard low-profile universal impact sockets. This compact size further enhances accessibility in tight spaces.
Warranty: Lifetime warranty, indicating the manufacturer's confidence in the product's durability and quality.
Included Components:
- 7834001: 5/16" Nano Impact Socket (x1)
- 7834002: 3/8" Nano Impact Socket (x1)
- 7834003: 7/16" Nano Impact Socket (x1)
- 7834004: 1/2" Nano Impact Socket (x1)
- 7834005: 9/16" Nano Impact Socket (x1)
- 7834006: 5/8" Nano Impact Socket (x1)
- 7834007: 11/16" Nano Impact Socket (x1)
- 7834008: 3/4" Nano Impact Socket (x1)
- 7831011: Aluminum Socket Holder (x1)
- 7831012: Black Rubber Sheath (x2) - likely for protection or organization of the holder.
Manufacturing Origin: Made in Taiwan.

Usage Features:

Enhanced Accessibility: The pinless universal design allows the socket to pivot and angle freely, providing unparalleled access to fasteners in confined or obstructed areas. This flexibility is crucial for automotive repair and other mechanical tasks where space is limited.
Compact "Nano" Profile: Being up to 11% shorter than typical low-profile universal impact sockets, the "Nano" form factor further improves access in extremely tight spots, reducing the need for additional extensions or specialized tools.
Impact-Ready Durability: Constructed from forged Chrome Molybdenum steel, these sockets are specifically designed to withstand the high torque and shock generated by impact wrenches, ensuring longevity and reliable performance under heavy use.
Clear Size Markings: Each socket is clearly marked with its size (e.g., 5/16", 3/8", etc.) and the "Astro" brand, facilitating quick identification and selection during work.
Organized Storage: The set comes with an aluminum socket holder, which helps keep the sockets organized and easily accessible, preventing loss and streamlining workflow. The inclusion of black rubber sheaths suggests additional protection or grip for the holder.
Versatility: While primarily intended for hex fasteners with a 3/8" drive impact wrench, the universal joint broadens its application to various angles and positions, making it a versatile addition to any professional toolkit.
Safety Considerations: The manual strongly emphasizes safety, advising users to wear ANSI approved safety equipment, including goggles, and to follow all instructions to prevent injury or damage. It also warns about potential exposure to chemicals known to cause cancer, birth defects, or reproductive harm (e.g., ethylene glycol, gasoline vapors, engine exhaust), highlighting the importance of proper ventilation and protective gear.

Maintenance Features:

Durable Construction: The use of forged CRO-MO steel inherently contributes to low maintenance requirements due to its high resistance to wear and impact.
Lifetime Warranty: The lifetime warranty provided by Astro Pneumatic Tool Company suggests that the product is designed for long-term use and that the manufacturer stands behind its quality. This implies that in case of manufacturing defects or premature failure under normal use, the product will be repaired or replaced, reducing long-term maintenance costs for the user.
Proper Storage: The included aluminum socket holder aids in proper storage, protecting the sockets from being misplaced or damaged when not in use. Keeping tools organized and clean is a fundamental aspect of tool maintenance.
No Alterations: The manual explicitly states, "Never alter or modify this tool in any way." This is a crucial maintenance instruction, as modifications can compromise the tool's integrity, void the warranty, and potentially lead to unsafe operation or damage.
Clean Working Environment: The instruction to "Always work in a clean, safe, well-lit, organized and adequately equipped area" indirectly contributes to tool maintenance by preventing tools from being lost, damaged by debris, or used in conditions that could lead to premature wear.
Regular Inspection: Although not explicitly detailed as a "maintenance feature," the general warning to "Study, understand and follow all instructions" implies that users should regularly inspect their tools for wear or damage before use, as part of good practice. Any damaged parts should be replaced or repaired by qualified personnel, or the tool should be replaced if necessary.