GMU28A — INDICATOR,LIQUID QUANTITY

✓ Government record, cited

MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M · COMPONENT

PRODUCT OVERVIEW

GMU28A: INDICATOR,LIQUID QUANTITY.

The INDICATOR,LIQUID QUANTITY is a MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M industrial component. Key specifications include PHASE: SINGLE, LENGTH: 5.000 INCHES NOMINAL IN, DIAMETER: 2.000 INCHES NOMINAL IN, SCALE RANGE: +0.1 TO 25.0 LITERS SINGLE INDICATOR SINGLE SCALE, CONTACT TYPE: PIN AND COAXIAL SOCKET, CURRENT TYPE: AC. This part is cataloged in the U.S.

Government catalog under NSN 6680-00-900-8356, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

GMU28A

NSN: 6680-00-900-8356
NIINs: 009008356, 009933435
FSC: 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments
CAGE: 80058 — JOINT ELECTRONICS TYPE DESIGNATION SYSTEM (USA)

SPECIFICATIONS

PHASE	SINGLE
LENGTH	5.000 INCHES NOMINAL IN
DIAMETER	2.000 INCHES NOMINAL IN
SCALE RANGE	+0.1 TO 25.0 LITERS SINGLE INDICATOR SINGLE SCALE
CONTACT TYPE	PIN AND COAXIAL SOCKET
CURRENT TYPE	AC
ACCURACY RATING	1.0 LITERS SINGLE INDICATOR SINGLE SCALE
CONTACT QUANTITY	7
FREQUENCY RATING	400.0 HERTZ NOMINAL
SPECIAL FEATURES	GLASS COATED WITH ANTIREFLECTION COATING
AC VOLTAGE RATING	115.0 VOLTS NOMINAL
NONDEFINITIVE SPEC/STD DATA	GMU-28/A TYPE
NSN	6680-00-900-8356

COMPONENT DIAGRAM

KEY FEATURES

•

INDIVIDUAL MARKING: LIQUID OXYGEN LITERS

•

PHASE: SINGLE

•

CONTACT TYPE: PIN

•

LENGTH: 5.000 INCHES NOMINAL IN

•

AC VOLTAGE RATING: 115.0 VOLTS NOMINAL

•

CURRENT TYPE: AC

•

ELECTRICAL CONNECTION QUANTITY: 1

•

ELECTRICAL CONNECTION IDENTIFYING NUMBER: 182-1-1000

TECHNICAL CHARACTERISTICS

INDIVIDUAL MARKING	LIQUID OXYGEN LITERS
PHASE	SINGLE
CONTACT TYPE	PIN
LENGTH	5.000 INCHES NOMINAL IN
AC VOLTAGE RATING	115.0 VOLTS NOMINAL
CURRENT TYPE	AC
ELECTRICAL CONNECTION QUANTITY	1
ELECTRICAL CONNECTION IDENTIFYING NUMBER	182-1-1000
SUPPLEMENTARY FEATURES	TECH ORDER 15X4-3-1-104
SCALE RANGE	+0.1 TO 25.0 LITERS SINGLE INDICATOR SINGLE SCALE

SUBSTITUTES & CROSS-REFERENCES 2

9A360Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

MIL-I-27544Reference document

Same NSN cross-reference

Reference document — Identification reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedDemilitarization required — critical (Q)

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FREQUENTLY ASKED QUESTIONS

What is GMU28A?

GMU28A is a INDICATOR,LIQUID QUANTITY manufactured by MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M.

What parts can replace GMU28A?

There are 2 known substitutes for GMU28A: 9A360, MIL-I-27544. Substitute compatibility should be verified for your specific system.

What is the NSN for GMU28A?

GMU28A is cataloged in the U.S. Government catalog under NSN 6680-00-900-8356. This indicates validated use in U.S. government and defense supply chains.

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