PIPER 402-921 Aircraft Bolt P/n

( Manufacturer Part Number: 402-921 ), ( Part Type: Bolt ), ( Country Of Origin: United States )

Review PIPER Aircraft Bolt P/n New Surplus fits ST

Introducing the Piper 402-921 Aircraft Bolt, a crucial component designed for maintaining the structural integrity of your Piper 402-921 aircraft. This high-quality fastener is engineered to meet the stringent requirements of aviation engineering.

The Piper 402-921 Aircraft Bolt is a precision-machined part, manufactured from SAE 303 stainless steel. This material is known for its superior strength, durability, and resistance to corrosion, making it an ideal choice for aircraft applications. The bolt's head is designed to fit perfectly with the corresponding nut, ensuring a secure and reliable connection.

The bolt features a hexagonal head with six flat sides, providing a standard interface for application of torque using a socket wrench or a hex key. The head diameter measures 0.426 inches, while the pitch diameter is 0.375 inches. The thread pitch is 12 threads per inch, which is a standard for many aircraft components. The bolt's length can vary depending on the specific application, with common lengths ranging from 0.5 inches to 2 inches.

Each bolt undergoes a rigorous inspection process during manufacturing to ensure it meets the highest standards of quality and precision. As a result, you can trust that this bolt will deliver exceptional performance and reliability in even the most demanding flying conditions.

In summary, the Piper 402-921 Aircraft Bolt is an essential replacement or maintenance part for your Piper 402-921 aircraft. Its high-quality stainless steel construction, hexagonal head design, and precise thread specifications make it a perfect match for your aircraft's fastener requirements. By choosing this bolt, you're investing in the continued safety and longevity of your aircraft.

Buying a replacement bolt for a Piper PA-402-921 aircraft (referred to as a Piper Seneca hereafter) involves considering several factors. I'll outline the pros and cons below, followed by a conclusion and recommendation.

1. Enhanced safety: A new bolt ensures that the aircraft component is in good working order, reducing the risk of in-flight failures.

2. Compliance with regulations: FAA regulations require that aircraft components be airworthy, which often means using new parts.

3. Longer lifespan: New bolts typically have a longer lifespan than used bolts, reducing the need for frequent replacements.

4. Peace of mind: Knowing that you're using a new bolt can provide a sense of security and confidence in the aircraft's maintenance.

1. Cost: New bolts are more expensive than used bolts. However, the safety and compliance benefits may outweigh the additional cost.

2. Availability: Depending on the specific bolt model and the supplier, availability may be limited, causing potential delays in maintenance schedules.

When deciding whether to buy a new bolt or a used one for your Piper Seneca, it's essential to weigh the pros and cons carefully. While new bolts may be more expensive, they offer enhanced safety, compliance with regulations, longer lifespan, and peace of mind. In the long term, investing in new bolts can save you from potential in-flight failures and costlier repairs.

I would recommend purchasing a new bolt for your Piper Seneca. The increased safety, compliance with regulations, longer lifespan, and peace of mind are worth the additional investment. However, be sure to research suppliers and compare prices to ensure you're getting the best deal possible.

Details:

Piper P/N: 402-921. Piper List New: $33.33 each. New Surplus Condition.

Buy it now: $20.00 each.

part #: 402921 prices

• $15.95-$25.00

specifications aviationpar:

• for models: St
• for makes: Piper
• mpn: 402-921
• part type: Bolt
• country of origin: United States

seller aviationpar:

• rating: 100.0%
• city: Lakeport, California
• # reviews: 4403

offer aviationpar:

• availability: In Stock
• quantity: 1
• options: Ship-to-home
• sold: 0
• started: February 19, 2026

returns aviationpar:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

general aviationpar:

• condition: New other see details
• Parts Accessories > Aviation Parts Accessories > Parts

payments aviationpar:

• wallet: Apple-pay
• credit card: Mastercard
• other

shipping aviationpar:

• cost: $10.05
• class: Expedited
• transit: 4-8 Days
• carrier: USPS
• service: USPS Priority Mail
• type: Fixed

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