The #9455 Precision Protrusion Height Gage System is a high-accuracy measurement platform engineered specifically for aerospace and special fasteners requiring NAS-level dimensional verification.

Designed for compliance with ANSI, ASME, ISO, and NAS standards, the 9455 Series utilizes interchangeable precision gage bushings to measure fastener head protrusion and related dimensional attributes.

The system measures gaging bushing hole sizes using the Height Over Ball method and calculates actual certified sizes to ensure traceable and repeatable dimensional verification.

The 9455 Series can be configured to measure:

• Aerospace fastener head protrusion

• Special fastener attributes

• Precision head height dimensions

• NAS series fasteners

• ANSI and ISO fastener geometries

Interchangeable gage bushings are available in both inch and metric sizes.

Bushing dies are manufactured from heat treated high speed steel or carbide to provide long-term dimensional stability and wear resistance.

The system is ideal for:

• Aerospace fastener manufacturers

• Defense contractors

• Aircraft assembly facilities

• Certified aerospace quality laboratories

• High-precision dimensional inspection departments

PRIMARY SYSTEMS

9455-00

Precision NAS Protrusion Height Gage (2.5 mm)

9455-06

Insert Gage Plate – 6 Bushing Station

INTERCHANGEABLE COMPONENTS

9455-##

Interchangeable Gage Bushing Dies

NAS526, NAS9800

Styles #1, #2, #3, #4

INDICATORS

543-552

Mitutoyo Digimatic IndicatorRange 1 inch / 25.4 mmResolution .00005 inch / 0.001 mm

543-472

Mitutoyo Analog & Digimatic IndicatorRange 1 inch / 25.4 mmResolution .00005 inch / 0.001 mm

DATA ACCESSORIES

904338

Cable – 1 meter

264-504

Digimatic Mini Processor SPC Recorder