Lower Back Connection Gauges

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	Connection Location Connection Location	Show

	Lower Back

	Connection Location Connection Location	Hide

	Bottom
	Center Back
	Lower Back
	Top
	Back
	Right Side
	Left Side

	Dial Diameter Dial Diameter

2 1/2"

4 1/2"

	Pipe Size Pipe Size

1/4

1/2

	Thread Type Thread Type

NPT

	Dial Type Dial Type


Dry	Liquid Filled

	For Use With For Use With

	Scale Scale

in. of Hg

kPa

psi

	Scale Type Scale Type

Single

Dual

	Measures Measures

Pressure

Vacuum

	Case Material Case Material

Stainless Steel

Brass

Aluminum

	Mount Type Mount Type

	Bolt On

	Connection Material Connection Material

Brass

Stainless Steel

	Lens Material Lens Material

Plastic

Glass

	Maximum Process Temperature Maximum Process Temperature

	Display Type Display Type

	Dial

	Gender Gender

Male

	Accuracy Grade Accuracy Grade

	Connection Type Connection Type

	Pipe

	Connection Style Connection Style

Threaded

	Maximum Environment Temperature Maximum Environment Temperature

	Accuracy Scale Accuracy Scale

Full Scale

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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34 Products

About Pressure Gauges

About Pipe Size

Single Scale With Lower Back Connection

Dual Scale With Lower Back Connection

Lower Back Connection

A liquid-filled dial reduces needle flutter for precise readings in high-vibration applications. Gauges are commonly used with pumps, filters, regulators, and in process lines to measure and display pressure. Mount them with the dial face upright.

Gauges with 304 stainless steel case and ABS plastic case have better corrosion resistance than gauges with brass case.

For technical drawings and 3-D models, click on a part number.

Brass Case with Brass Connection—Single Scale (psi)

For Use With: Air, Water, Hydraulic Fluid, and Natural Gas; except
With NIST Certificate: Air, Water, Hydraulic Fluid, Carbon Dioxide, Ethanol, and Natural Gas
Accuracy: ±1.5% Full Scale (Not Graded); except
2 1/2" Dia. NPT Male: ±1.% Mid Scale (Grade A)
4" Dia. NPT Male and NPT Male with NIST Certificate: ±1% Full Scale (Grade 1A)

	Available Pressure Ranges
	Gauges		Gauges with NIST Certificate
Pressure Range, psi	Graduation Marks, psi	Numeric Increments, psi	Graduation Marks, psi	Numeric Increments, psi
NPT Male
4" Dial Diameter
0 to 30	__	__	0.5	5
0 to 60	1	10	1	10
0 to 100	1	10	2	20
0 to 160	2	20	2	20
0 to 200	2	20	4	40
0 to 300	5	50	5	50
0 to 400	5	50	5	50
0 to 600	10	100	10	100
0 to 800	__	__	10	100
0 to 1,000	10	100	20	200
0 to 1,500	20	300	20	300
0 to 2,000	20	200	40	400
0 to 3,000	50	500	50	500
0 to 5,000	50	500	100	1,000
0 to 6,000	__	__	100	1,000
0 to 10,000	__	__	200	2,000

						Lower Back Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Liquid Type	Mounting Orientation		Each
NPT Male
4"	1/4	0° to 140°	0° to 140°	Glycerin	Upright	0000000	0000000
NPT Male with NIST Certificate
4"	1/4	0° to 140°	0° to 140°	Glycerin	Upright	0000000	000000

304 Stainless Steel Case with Brass Connection—Dual Scale (psi, kPa)

For Use With: Air, Water, and Hydraulic Fluid
Accuracy: ±1% Mid Scale (Grade A); except
4" Dia.: ±1% Full Scale (Grade 1A)

		Available Pressure Ranges
		4" Dial Diameter
Pressure Range		Graduation Marks		Numeric Increments
psi	kPa	psi	kPa	psi	kPa
0 to 15	0 to 100	0.2	2	3	20
0 to 30	0 to 200	0.5	5	5	50
0 to 60	0 to 400	1	10	10	100
0 to 100	0 to 680	1	10	10	100
0 to 160	0 to 1,100	2	20	20	200
0 to 200	0 to 1,350	2	20	20	200
0 to 300	0 to 2,000	5	50	50	500
0 to 400	0 to 2,700	5	20	50	500
0 to 600	0 to 4,000	10	100	100	1,000
0 to 1,000	0 to 6,800	10	100	100	1,000
0 to 1,500	0 to 10,000	20	200	300	2,000
0 to 2,000	0 to 13,500	20	200	200	2,000
0 to 3,000	0 to 20,000	50	500	500	5,000
0 to 5,000	0 to 34,000	50	500	500	5,000
0 to 6,000	0 to 41,000	50	500	500	5,000
0 to 10,000	0 to 68,000	100	1,000	1,000	10,000
0 to 15,000	0 to 102,000	200	2,000	3,000	20,000

						Lower Back Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Liquid Type	Mounting Orientation		Each
NPT Male
4"	1/4	0° to 140°	0° to 140°	Glycerin	Upright	0000000	000000
NPT Male with NIST Certificate
4"	1/4	0° to 140°	0° to 140°	Glycerin	Upright	0000000	000000

Extreme Vibration-Resistant Pressure Gauges

Lower Back Connection (Flange Mount)

Unlike other gauges that have multiple moving parts that can shake loose, these have only one internal part. They are the most shock-resistant gauges we offer and allow for precise readings in high-vibration applications. Use them with pumps, filters, regulators, and in process lines to measure and display pressure. Gauges meet MIL-G-18997 for resistance to salt spray and washdown environments. They have a safety case that blows out in the back under excess pressure, protecting the operator in front. Mount them with the dial face upright.

For technical drawings and 3-D models, click on a part number.

Aluminum Case with 316 Stainless Steel Connection—Single Scale (psi)

For Use With: Air, Water, Hydraulic Fluid, Gasoline, Diesel Fuel, Natural Gas, Refrigerant, and Salt Water
Accuracy: ±1% Full Scale (Grade 1A)

Available Pressure Ranges
Pressure Range, psi	Graduation Marks, psi	Numeric Increments, psi
0 to 100	1	10
0 to 200	2	20
0 to 1,000	10	100
0 to 2,000	20	200
0 to 5,000	50	500

									Lower Back Connection (Flange Mount)
				Mounting		Bolt			Flange
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Orientation	Fasteners Included	Circle Dia.	Hole Dia.	No. of Holes	Location	OD		Each
NPT Male
4 1/2"	1/4	-65° to 400°	-65° to 600°	Upright	No	5 3/8"	7/32"	3	Back	5 13/16"	0000000	0000000

Vibration- and Corrosion-Resistant Pressure Gauges

Single Scale With Lower Back Connection

Lower Back Connection

The case material and connection threads are stainless steel for protection in corrosive environments, plus the dial is glycerin-filled to reduce needle flutter in high-vibration applications. Gauges are commonly used with pumps, filters, regulators, and in process lines to measure and display pressure.

Gauges with calibration certificate must be mounted with the dial face upright.

For technical drawings and 3-D models, click on a part number.

304 Stainless Steel Case with 316 Stainless Steel Connection—Single Scale (psi)

For Use With: Air, Water, Hydraulic Fluid, Gasoline, Diesel Fuel, and Natural Gas
Accuracy: ±2% Mid Scale (Grade B); except
2 1/2" Dia. NPT Male with NIST Certificate: ±1.5% Full Scale (Not Graded)
4" Dia. NPT Male with NIST Certificate: ±1% Full Scale (Grade 1A)

	Available Pressure Ranges
	4" Dial Diameter
Pressure Range, psi	Graduation Marks, psi	Numeric Increments, psi
Gauges with NIST Certificate
0 to 15	0.2	3
0 to 30	0.5	5
0 to 60	1	10
0 to 100	2	20
0 to 160	2	20
0 to 200	4	40
0 to 300	5	50
0 to 400	5	50
0 to 600	10	100
0 to 1,000	20	200
0 to 1,500	20	300
0 to 2,000	40	400
0 to 3,000	50	500
0 to 5,000	100	1,000
0 to 6,000	100	1,000
0 to 10,000	200	2,000

						Lower Back Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Mounting Orientation	Liquid Type		Each
NPT Male with Calibration Certificate Traceable to NIST
4"	1/2	0° to 140°	0° to 140°	Upright	Glycerin	0000000	0000000

High-Accuracy Vibration- and Corrosion-Resistant Pressure Gauges

Lower Back Connection

Lower Back Connection (Flange Mount)

Lower Back Connection

Lower Back Connection (Flange Mount)

Built for harsh environments prone to vibration, these gauges pair a corrosion resistant stainless steel case and connection threads with a glycerin-filled dial to reduce needle flutter. Use them with pumps, filters, regulators, and in process lines to measure and display pressure. They are suitable for critical processes that require high accuracy, such as hydraulic and laboratory applications. Mount gauges with the dial face upright.

For technical drawings and 3-D models, click on a part number.

304 Stainless Steel Case with 316 Stainless Steel Connection—Single Scale (psi)

For Use With: Air, Water, and Hydraulic Fluid
Accuracy: ±1% Full Scale (1A); except
6" Dial. Dia.: ±0.5% Full Scale (2A)

	Available Pressure Ranges
	2 1/2" Dial Diameter		4" Dial Diameter		6" Dial Diameter
Pressure Range, psi	Graduation Marks, psi	Numeric Increments, psi	Graduation Marks, psi	Numeric Increments, psi	Graduation Marks, psi	Numeric Increments, psi
0 to 15	0.25	3	0.2	3	0.25	3
0 to 30	0.5	5	0.5	5	0.5	5
0 to 60	1	10	1	10	1	10
0 to 100	1	10	1	10	1	10
0 to 160	2	20	2	20	2	20
0 to 200	2	20	2	20	2	20
0 to 300	5	50	5	50	5	30
0 to 400	5	50	5	50	5	50
0 to 600	10	100	10	100	10	100
0 to 1,000	10	100	10	100	10	100
0 to 1,500	25	300	20	300	25	300
0 to 2,000	20	200	20	200	20	200
0 to 3,000	50	500	50	500	50	500
0 to 5,000	50	500	50	500	50	500
0 to 10,000	100	1,000	100	1,000	100	1,000

Lower Back Connection

NPT Male
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Mounting Orientation		Each
2 1/2"	1/4	0° to 155°	0° to 140°	Upright	000000	0000000
4"	1/4	0° to 140°	0° to 210°	Upright	00000000	000000
6"	1/4	0° to 155°	0° to 140°	Upright	000000	000000

Lower Back Connection (Flange Mount)

					Flange			Bolt
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Mounting Orientation	Location	OD	Mounting Fasteners Included	Circle Dia.	Hole Dia.	No. of Holes		Each
NPT Male
2 1/2"	1/4	0° to 155°	0° to 140°	Upright	Front	3 3/8"	No	2 15/16"	9/64"	3	000000	0000000
4"	1/4	0° to 140°	0° to 210°	Upright	Front	5 3/16"	No	4 9/16"	3/16"	3	0000000	000000
6"	1/4	0° to 155°	0° to 140°	Upright	Front	7 3/4"	No	7"	15/64"	3	000000	000000

High-Accuracy Corrosion-Resistant Pressure Gauges

Lower Back Connection

Not only do these gauges withstand corrosive environments, they have the precision needed for critical processes that require high accuracy, such as hydraulic and laboratory applications. Use them with pumps, filters, regulators, and in process lines to measure and display pressure. Mount gauges with the dial face upright.

For technical drawings and 3-D models, click on a part number.

304 Stainless Steel Case with 316 Stainless Steel Connection—Single Scale (psi)

For Use With: Air, Water, Hydraulic Fluid, Gasoline, Diesel Fuel, and Natural Gas
Accuracy: ±1.5% Full Scale (Not Graded); except
4" Dial Dia.: ±1% Full Scale (Grade 1A)

	Available Pressure Ranges
	4" Dial Diameter
Pressure Range, psi	Graduation Marks, psi	Numeric Increments, psi
0 to 15	0.2	3
0 to 30	0.5	5
0 to 60	1	10
0 to 100	2	20
0 to 160	2	20
0 to 200	4	40
0 to 300	5	50
0 to 400	5	50
0 to 600	10	100
0 to 1,000	20	200
0 to 1,500	20	300
0 to 2,000	40	400
0 to 3,000	50	500
0 to 5,000	100	1,000
0 to 6,000	100	1,000
0 to 10,000	200	2,000

					Lower Back Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Mounting Orientation		Each
NPT Male
4"	1/2	-40° to 140°	-40° to 390°	Upright	00000000	0000000
NPT Male with Calibration Certificate Traceable to NIST
4"	1/2	-40° to 140°	-40° to 390°	Upright	0000000	000000

Gas Pressure Gauges

Dual Scale With Lower Back Connection

Lower Back Connection

Use these gauges with pumps, filters, regulators, and in process lines to monitor the pressure of compressed gas. Mount them with the dial face upright. Gauges for use with acetylene can also be used in welding applications.

Gauges with 304 stainless steel case are cleaned and bagged to meet ASME B40.1, Level IV for oxygen service.

For technical drawings and 3-D models, click on a part number.

304 Stainless Steel Case with Brass Connection—Dual Scale (psi, kPa)

For Use With: Oxygen
Accuracy: ±1% Mid Scale (Grade A); except
4" Dial Dia.: ±1% Full Scale (Grade 1A)

		Available Pressure Ranges
		Lower Back Connection
Pressure Range		Graduation Marks		Numeric Increments
psi	kPa	psi	kPa	psi	kPa
4" Dial Diameter
0 to 15	0 to 103	0.2	1	3	10
0 to 30	0 to 206	0.5	2	5	20
0 to 100	0 to 680	1	10	10	100
0 to 200	0 to 1,360	2	20	20	200
0 to 300	0 to 2,060	5	20	50	200
0 to 600	0 to 4,100	10	100	100	1,000

					Lower Back Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Mounting Orientation		Each
NPT Male
4"	1/4	-40° to 140°	-40° to 140°	Upright	0000000	000000

Vibration- and Corrosion-Resistant Pressure and Vacuum Gauges

Dual Scale With Lower Back Connection

Lower Back Connection

Designed for harsh environments prone to vibration, these gauges pair a corrosion-resistant 304 stainless steel case with a glycerin-filled dial that reduces needle flutter. Also known as compound gauges, they measure both pressure and vacuum. Use them with pumps, filters, regulators, compressors, and in suction and process lines.

For technical drawings and 3-D models, click on a part number.

304 Stainless Steel Case with Brass Connection—Dual Scale (psi/in. of Hg, kPa)

For Use With: Air and Water
Accuracy: ±1% Mid Scale (Grade A); except
4" Dial Dia.: ±1% Full Scale (Grade 1A)

Available Pressure Ranges
Pressure Range		Vacuum Range		Graduation Marks			Numeric Increments
psi	kPa	in. of Hg	kPa	psi	in. of Hg	kPa	psi	in. of Hg	kPa
4" Dial Diameter
0 to 15	0 to 100	30 to 0	-100 to 0	0.5	1	2	3	5	20
0 to 30	0 to 205	30 to 0	-100 to 0	0.5	1	5	5	10	50
0 to 60	0 to 410	30 to 0	-100 to 0	2	2	10	10	10	100
0 to 100	0 to 680	30 to 0	-100 to 0	2	5	10	10	30	100
0 to 160	0 to 1,100	30 to 0	-100 to 0	5	5	20	20	30	100
0 to 200	0 to 1,360	30 to 0	-100 to 0	5	5	20	20	30	200
0 to 300	0 to 2,050	30 to 0	-100 to 0	5	10	50	50	30	500

					Lower Back Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Liquid Type		Each
NPT Male
4"	1/4	35° to 140°	35° to 140°	Glycerin	00000000	000000
NPT Male with Calibration Certificate Traceable to NIST
4"	1/4	35° to 140°	35° to 140°	Glycerin	00000000	000000

Vibration- and Corrosion-Resistant Vacuum Gauges

Dual Scale With Lower Back Connection

Lower Back Connection

Designed for harsh environments prone to vibration, these gauges pair a corrosion-resistant 304 stainless steel case with a glycerin-filled dial to reduce needle flutter. Use them with vacuum pumps, packaging equipment, and in suction lines to measure and display vacuum.

For technical drawings and 3-D models, click on a part number.

304 Stainless Steel Case with Brass Connection—Dual Scale (in. of Hg, kPa)

For Use With: Air
Accuracy: ±1% Mid Scale (Grade A); except
4" Dial Dia.: ±1% Full Scale (Grade 1A)

Vacuum Range		Graduation Marks		Numeric Increments
in. of Hg	kPa	in. of Hg	kPa	in. of Hg	kPa
4" Dial Diameter
30 to 0	-100 to 0	0.5	1	5	10

					Lower Back Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Liquid Type		Each
NPT Male
4"	1/4	35° to 140°	35° to 140°	Glycerin	000000000	000000
NPT Male with Calibration Certificate Traceable to NIST
4"	1/4	35° to 140°	35° to 140°	Glycerin	000000000	000000

Corrosion-Resistant Vacuum Gauges

Lower Back Connection

The case and connection threads are stainless steel for protection in corrosive environments. Use these gauges with vacuum pumps, packaging equipment, and in suction lines to measure and display vacuum.

For technical drawings and 3-D models, click on a part number.

304 Stainless Steel Case with 316 Stainless Steel Connection—Single Scale (in. of Hg)

For Use With: Air
Accuracy: See Table

Available Vacuum Ranges
Vacuum Range, in. of Hg	Graduation Marks, in. of Hg	Numeric Increments, in. of Hg
2 1/2" Dial Diameter
30 to 0	0.5	5
4" Dial Diameter
30 to 0	0.5	5
4 1/2" Dial Diameter
30 to 0	0.5	5
6" Dial Diameter
30 to 0	0.5	5

NPT Male
Dial Diameter	Pipe Size	Accuracy	Environment Temp. Range, °F	Process Temp. Range, °F		Each
Lower Back Connection
2 1/2"	1/4	±1.6% Full Scale (Grade B)	-40° to 200°	-40° to 250°	00000000	000000
4"	1/4	±1.6% Full Scale (Grade B)	-40° to 200°	-40° to 250°	00000000	000000
4"	1/2	±1% Full Scale (Grade 1A)	-40° to 140°	-40° to 390°	00000000	000000
4 1/2"	1/4	±1% Full Scale (Grade 1A)	-40° to 200°	-20° to 250°	00000000	000000
4 1/2"	1/2	±1% Full Scale (Grade 1A)	-40° to 200°	-20° to 250°	00000000	000000
6"	1/2	±1% Full Scale (Grade 1A)	-40° to 200°	-20° to 250°	00000000	000000

Test Gauges for Pressure

Dual Scale with Lower Back Connection (Flange Mount)

Lower Back Connection

Test and calibrate transmitters, gauges, and other equipment that measures pressure.

For technical drawings and 3-D models, click on a part number.

Aluminum Case with 316 Stainless Steel Connection—Dual Scale (psi, kPa)

For Use With: Air, Hydraulic Fluid, Natural Gas, Water
Accuracy: ±0.5% Full Scale (Grade 2A)

Available Pressure Ranges
Pressure Range		Graduation Marks		Numeric Increments
psi	kPa	psi	kPa	psi	kPa
0 to 15	0 to 103	0.1	1	1	10
0 to 30	0 to 206	0.2	2	5	20
0 to 60	0 to 410	0.5	5	5	50
0 to 100	0 to 685	1	5	10	50
0 to 160	0 to 1,100	1	10	20	100
0 to 200	0 to 1,370	2	10	20	200
0 to 300	0 to 2,060	2	20	50	200
0 to 400	0 to 2,740	5	20	50	500
0 to 600	0 to 4,100	5	50	50	500
0 to 1,000	0 to 6,850	10	50	100	1,000
0 to 1,500	0 to 10,300	10	100	100	1,000
0 to 2,000	0 to 13,700	20	100	200	2,000
0 to 3,000	0 to 20,600	20	200	500	2,000
0 to 5,000	0 to 34,400	50	200	500	5,000
0 to 10,000	0 to 68,500	100	500	1,000	10,000

								Lower Back Connection (Flange Mount)
					Bolt			Flange
Dial Dia.	Pipe Size	Environment Temperature Range, °F	Process Temperature Range, °F	Mounting Fasteners Included	Circle Dia.	Hole Dia.	No. of Holes	Location	OD		Each
NPT Male
4 1/2"	1/2	-40° to 150°	-40° to 225°	No	5 3/8"	13/64"	3	Front	6"	000000	0000000
NPT Male—Calibration Certificate Traceable to NIST
4 1/2"	1/2	-40° to 150°	-40° to 225°	No	5 3/8"	13/64"	3	Front	6"	00000000	000000

Corrosion-Resistant Test Gauges for Pressure

Lower Back Connection

All-stainless steel construction makes these gauges suitable for testing and calibrating in corrosive environments.

Heat-treated gauges have a yellow tint.

For technical drawings and 3-D models, click on a part number.

304 Stainless Steel Case with Heat-Treated 316 Stainless Steel Connection—Single Scale (psi)

For Use With: Air, Hydraulic Fluid, Water
Accuracy: ±0.5% Full Scale (Grade 2A)

Available Pressure Ranges
Pressure Range, psi	Graduation Marks, psi	Numeric Increments, psi
0 to 15	0.1	1
0 to 30	0.2	5
0 to 60	0.5	5
0 to 100	1	10
0 to 160	2	20
0 to 200	2	20
0 to 300	2	50
0 to 400	5	50
0 to 600	5	50
0 to 1,000	10	100

				Lower Back Connection
Dial Dia.	Pipe Size	Environment Temperature Range, °F	Process Temperature Range, °F		Each
NPT Male
4 1/2"	1/2	-20° to 150°	-20° to 250°	0000000	0000000
6"	1/2	-20° to 150°	-20° to 250°	0000000	000000
NPT Male—Calibration Certificate Traceable to NIST
6"	1/2	-20° to 150°	-20° to 250°	0000000	000000

Test Gauges for Vacuum

Lower Back Connection (Flange Mount)

Lower Back Connection

Test and calibrate transmitters, gauges, and other equipment that measures vacuum.

For technical drawings and 3-D models, click on a part number.

Aluminum Case with Brass Connection—Dual Scale (in. of Hg, kPa)

For Use With: Air
Accuracy: ±0.25% Full Scale (Grade 3A)

	Available Vacuum Ranges
	Vacuum Range		Graduation Marks		Numeric Increments
Dial Dia.	in. of Hg	kPa	in. of Hg	kPa	in. of Hg	kPa
4 1/2"	30 to 0	-100 to 0	0.1	0.5	1	5
6"	30 to 0	-100 to 0	0.1	0.5	1	10

					Bolt			Flange		Lower Back Connection (Flange Mount)
Dial Dia.	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Mounting Fasteners Included	Circle Dia.	Hole Thread Size	No. of Holes	Location	OD		Each
NPT Male
4 1/2"	1/4	-20° to 200°	-20° to 250°	No	5 3/8"	10-24	3	Front	6 3/32"	0000000	0000000
6"	1/4	-20° to 200°	-20° to 250°	No	7"	1/4"-20	3	Front	7 9/16"	0000000	000000
NPT Male—Calibration Certificate Traceable to NIST
4 1/2"	1/4	-20° to 200°	-20° to 250°	No	5 3/8"	10-24	3	Front	6 3/32"	0000000	000000
6"	1/4	-20° to 200°	-20° to 250°	No	7"	1/4"-20	3	Front	7 9/16"	0000000	000000