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1" AN-16 Threaded Head Spiral Gauges

Carl Frankenfield Photo


The 8683 Junior Top Mount Model Threaded Head Medium Duty Spiral Gauge is designed for use in measuring liquid levels in gasoline, diesel fuel, bio-diesel, hydraulic and lubricating oils where space restrictions prevent the use of a swing-arm style mechanical gauge. It is ideal for medium duty construction & agriculture, lawn & garden, marine and recreational vehicle applications.

General Information & Features

• Field Replaceable Snap-On Fractional Dial
• Solid One-Piece Head Construction, No-Leakage Path to Dial

The Threaded Head mounting of the 8683 Spiral Gauge allows a tight seal that restricts vapor loss. The “Screw In” mounting contributes to the gauges adaptability for use in restricted areas.

The 8683 Threaded Head Spiral Gauge is designed for top mounting utilizing a Viton O-ring and an easy to read fractional dial. It is available in lengths from 6 to 20 inches.


Data Sheet

Tank Opening Details - MS-525 (available upon request).

General Specifications*


Designed for top mounting only. Gauge uses threaded head.


Accuracy depends upon proper gauge sizing. Direct read dials +/-7%. Accuracy may be less depending upon tank shape. Accuracy may be less near full and empty. Accuracy may be less if tank is not level. This gauge is not to be used for filling. All accuracy estimates are expressed as a percent of full scale.


Standard operating range is -40°F to 158°F, -40°C to 70°C.

Shock & Vibration

Suitable to mobile, off-road medium duty, and marine applications.

Tank Pressure

0 to 14.5 PSIG [0 to 1,0 Bar] maximum.

Tank Opening Details

Fits AN-16 port or 1" NPSL fitting. See MS-525 (available upon request).


When Ordering Specify:

1. Gauge model number.

2. Tank depth.

3. Riser height, if any.

Materials of Construction*




Viton O-Ring. (See MS-525 for O-ring sizes.)

Guide Rod

Stainless steel.


Stainless steel.

Tie Plate

Stainless steel.

Guide & Bearing Pin

Stainless steel.


Nitrile rubber.

Drive Magnet

Nylon 12 composite

Standard Dial

Copolymer, hermetically sealed, gasoline resistant.

Magnet Holder & Centershaft Holder


*Materials and specifications are subject to change without notice. Pressure ratings subject to change due to temperature and other environmental considerations.