The #9047 Tri-Slot Penetration Gage is a precision inspection instrument designed to measure recess penetration depth for Tri-Slot three-wing ribbed fasteners manufactured to NAS4000 standards.

Tri-Slot recess systems are engineered for aerospace applications requiring high torque transmission, controlled driver engagement, and resistance to cam-out. Accurate penetration depth is critical to ensure proper assembly performance and structural reliability.

The 9047 Series verifies recess depth relative to the fastener head surface using a dial indicator based measurement system.

Manufactured to support NAS4000 inspection requirements, the 9047 Series provides consistent and repeatable depth verification for aerospace fastener production and quality control.

Available sizes:

9047-060 – Dash 0 – Size 0

9047-086 – Dash 1 – Size 1

9047-112 – Dash 2 – Size 2

9047-138 – Dash 3 – Size 4

9047-164 – Dash 4 – Size 6

9047-190J – Dash 4J – Size 8

9047-190 – Dash 5 – Size 10

9047-250 – Dash 6 – 1/4

9047-312 – Dash 7 – 5/16

9047-375 – Dash 8 – 3/8

9047-437 – Dash 9 – 7/16

9047-500 – Dash 10 – 1/29

047-562 – Dash 11 – 9/16

9047-625 – Dash 12 – 5/8

9047-750 – Dash 13 – 3/4

9047-875 – Dash 14 – 7/8

9047-100 – Dash 15 – 1

When ordering, specify:

• Inch dial indicator

• Metric dial indicator

• Optional SPC compatible digital indicator

The 9047 Series is ideal for:

• Aerospace fastener manufacturers

• Defense contractors

• Aviation OEM assembly

• MRO facilities

• Calibration laboratories

Gage probes are heat treated, thermally stabilized, and surface treated to maximize wear resistance and dimensional stability.

Long form calibration certificates provide dimensional verification and traceability to the National Institute of Standards and Technology, NIST.

The 9047 Series ensures accurate Tri-Slot penetration inspection in compliance with NAS4000 aerospace standards.