Tier 2process

Deep Hole Gun Drilling for Aerospace & Defense

Gun drilling creates deep, straight holes with exceptional straightness and surface finish. Critical for aerospace hydraulic components, landing gear, and fuel system parts requiring holes with length-to-diameter ratios exceeding 20:1.

±0.002" per 12"
Tolerances
32-63 Ra
Surface Finish
3+
Qualified Shops
Certified
AS9100

Why Aerospace Requires Gun Drilling

  • Landing gear require deep, precise bores
  • Hydraulic systems need straight fluid passages
  • Fuel system tubes require consistent ID
  • Actuator bodies have deep internal features
  • Cannot be achieved with standard drilling

Typical Applications

Landing gear main struts
Hydraulic cylinders
Fuel rails and manifolds
Actuator bodies
Heat exchanger tubes
Barrel and tube assemblies

Materials Commonly Machined

4340 steel300M steelTitaniumAluminumStainless steelInconel

Technical Considerations

  • Depths up to 100x diameter possible
  • High-pressure coolant through tool (1000+ PSI)
  • Single-flute drill with guide pad
  • BTA system for larger diameters

Machine Shops with Gun Drilling Capability

JAH Machine Inc.

VerifiedCAGE: 85DP2

Brea, CA• Est. 1986

[![JAH Machine](https://jahmachine.com/wp-content/uploads/2019/03/cropped-JAH-Logo-V1-Nazely-90x73.png)](https://jahmachine.com/)

Certifications

AS9100 CertifiedITAR Certified
5 services
5 materials
CNC Machining
Precision Machining
Grinding
+2 more

Materials:

AluminumSteelStainless SteelTitanium+1 more

Government Registration

UEI:K5MLNL7J2D95
7142036011
Website
View Details

J&E Precision Tool, LLC

VerifiedCAGE: 0SQ14

Southampton, MA• Est. 2015

Precision manufacturing company founded in 1979, specializing in complex CNC machined components for aerospace, defense, and medical industries with tolerances as close as +/- 0.0001 inch.

Certifications

AS9100 Rev D
ISO 9001 Certified
ITAR Registered
AS9100 Certified+1 more
13 services
4 materials
CNC Production
CNC Turning
Manual Prototyping
+10 more

Materials:

Aerospace AlloysMedical Grade MaterialsDefense Specification MetalsHigh-Precision Materials

Government Registration

UEI:FT5ADF1FMSM3
(413) 527-8778
Website
View Details

[![Rand Logo](https://www.randmachine.com/wp-content/uploads/2024/09/RAND_logo_trans.png)](https://www.randmachine.com/)

Certifications

AS9100 Certified
3 services
3 materials
Precision Machining
Welding
Fabrication

Materials:

AluminumSteelStainless Steel

Government Registration

UEI:FCBJFVJN4LM7
7166655217
Website
View Details

Tolerances Achievable

Position
±0.002" per 12"
Surface Finish
32-63 Ra
General
±0.001" diameter

Recommended Certifications

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Frequently Asked Questions

What is Gun Drilling?

Gun drilling creates deep, straight holes with exceptional straightness and surface finish. Critical for aerospace hydraulic components, landing gear, and fuel system parts requiring holes with length-to-diameter ratios exceeding 20:1.

Why is Gun Drilling important for aerospace?

Landing gear require deep, precise bores

What tolerances can be achieved?

±0.002" per 12"