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6625-00-109-7168

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K328616051

COVER,ELECTRICAL-ELECTRONIC TEST AND MEASUREMENT EQUIPMENT

NSN, MFG P/N

6625001097168

NSN

6625-00-109-7168

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K328616051

COVER,ELECTRICAL-ELECTRONIC TEST AND MEASUREMENT EQUIPMENT

NSN, MFG P/N

6625001097168

NSN

6625-00-109-7168

MFG

F E L CORP

Description

APPLICATION DESIGN: INDICATOR
III FSC APPLICATION DATA: ELEC,ELECT. PROPERTIES MEASURING AND TEST INSTRUMENTS
MATERIAL: BRASS
OVERALL DIAMETER: 3.077 INCHES MINIMUM AND 3.093 INCHES MAXIMUM
OVERALL HEIGHT: 0.418 INCHES NOMINAL
SURFACE TREATMENT: PAINT

301

AMMETER

NSN, MFG P/N

6625001090656

NSN

6625-00-109-0656

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301

AMMETER

NSN, MFG P/N

6625001090656

NSN

6625-00-109-0656

MFG

SOLARTRON ELECTRONICS INC WESTON INSTRUMENTS DIV

Description

(NON-CORE DATA) PANEL FOR WHICH DESIGNED: NONMAGNETIC
ACCURACY IN PERCENT: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
BACKGROUND COLOR: WHITE SINGLE INDICATOR SINGLE RANGE
CIRCUIT ATTACHMENT METHOD AND QUANTITY: 2 THREADED STUD
CIRCUIT CURRENT FOR WHICH DESIGNED: DC
DIAL SCALE MARKING COLOR: BLACK SINGLE INDICATOR SINGLE RANGE
FEATURES PROVIDED: ZERO ADJUSTER
INSTALLATION DESIGN: PANEL
MATERIAL: PLASTIC
METER BODY DIAMETER BEHIND MOUNTING FLANGE: 2.760 INCHES NOMINAL
METER DEPTH BEHIND MOUNTING FLANGE: 1.840 INCHES NOMINAL
MOUNTING ARRANGEMENT STYLE: E5 THREE HOLE/STUD BOLT CIRCLE
MOUNTING BOLT CIRCLE DIAMETER: 3.160 INCHES NOMINAL
MOUNTING FACILITY TYPE AND QUANTITY: 3 UNTHREADED HOLE
MOUNTING HOLE DIAMETER: 0.156 INCHES NOMINAL
MOVEMENT SUSPENSION METHOD: JEWEL PIVOT BASE
MOVEMENT TYPE: MOVING COIL, PERMANENT MAGNET
OVERALL DIAMETER: 3.510 INCHES NOMINAL
OVERALL LENGTH: 2.220 INCHES NOMINAL
SCALE DIVISION QUANTITY: 60 SINGLE INDICATOR SINGLE RANGE
SENSITIVITY RATING: 30.0 MILLIVOLTS
STYLE DESIGNATOR: C1 ROUND FLUSH MTG

45-5001

AMMETER

NSN, MFG P/N

6625001090656

NSN

6625-00-109-0656

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45-5001

AMMETER

NSN, MFG P/N

6625001090656

NSN

6625-00-109-0656

MFG

RAYTHEON TECHNICAL SERVICES COMPANY LLC DBA RAYTHEON

Description

(NON-CORE DATA) PANEL FOR WHICH DESIGNED: NONMAGNETIC
ACCURACY IN PERCENT: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
BACKGROUND COLOR: WHITE SINGLE INDICATOR SINGLE RANGE
CIRCUIT ATTACHMENT METHOD AND QUANTITY: 2 THREADED STUD
CIRCUIT CURRENT FOR WHICH DESIGNED: DC
DIAL SCALE MARKING COLOR: BLACK SINGLE INDICATOR SINGLE RANGE
FEATURES PROVIDED: ZERO ADJUSTER
INSTALLATION DESIGN: PANEL
MATERIAL: PLASTIC
METER BODY DIAMETER BEHIND MOUNTING FLANGE: 2.760 INCHES NOMINAL
METER DEPTH BEHIND MOUNTING FLANGE: 1.840 INCHES NOMINAL
MOUNTING ARRANGEMENT STYLE: E5 THREE HOLE/STUD BOLT CIRCLE
MOUNTING BOLT CIRCLE DIAMETER: 3.160 INCHES NOMINAL
MOUNTING FACILITY TYPE AND QUANTITY: 3 UNTHREADED HOLE
MOUNTING HOLE DIAMETER: 0.156 INCHES NOMINAL
MOVEMENT SUSPENSION METHOD: JEWEL PIVOT BASE
MOVEMENT TYPE: MOVING COIL, PERMANENT MAGNET
OVERALL DIAMETER: 3.510 INCHES NOMINAL
OVERALL LENGTH: 2.220 INCHES NOMINAL
SCALE DIVISION QUANTITY: 60 SINGLE INDICATOR SINGLE RANGE
SENSITIVITY RATING: 30.0 MILLIVOLTS
STYLE DESIGNATOR: C1 ROUND FLUSH MTG

8D041

AMMETER

NSN, MFG P/N

6625001090656

NSN

6625-00-109-0656

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8D041

AMMETER

NSN, MFG P/N

6625001090656

NSN

6625-00-109-0656

MFG

GENERAL ELECTRIC CO INSTRUMENT PRODUCTS SECTION

Description

(NON-CORE DATA) PANEL FOR WHICH DESIGNED: NONMAGNETIC
ACCURACY IN PERCENT: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
BACKGROUND COLOR: WHITE SINGLE INDICATOR SINGLE RANGE
CIRCUIT ATTACHMENT METHOD AND QUANTITY: 2 THREADED STUD
CIRCUIT CURRENT FOR WHICH DESIGNED: DC
DIAL SCALE MARKING COLOR: BLACK SINGLE INDICATOR SINGLE RANGE
FEATURES PROVIDED: ZERO ADJUSTER
INSTALLATION DESIGN: PANEL
MATERIAL: PLASTIC
METER BODY DIAMETER BEHIND MOUNTING FLANGE: 2.760 INCHES NOMINAL
METER DEPTH BEHIND MOUNTING FLANGE: 1.840 INCHES NOMINAL
MOUNTING ARRANGEMENT STYLE: E5 THREE HOLE/STUD BOLT CIRCLE
MOUNTING BOLT CIRCLE DIAMETER: 3.160 INCHES NOMINAL
MOUNTING FACILITY TYPE AND QUANTITY: 3 UNTHREADED HOLE
MOUNTING HOLE DIAMETER: 0.156 INCHES NOMINAL
MOVEMENT SUSPENSION METHOD: JEWEL PIVOT BASE
MOVEMENT TYPE: MOVING COIL, PERMANENT MAGNET
OVERALL DIAMETER: 3.510 INCHES NOMINAL
OVERALL LENGTH: 2.220 INCHES NOMINAL
SCALE DIVISION QUANTITY: 60 SINGLE INDICATOR SINGLE RANGE
SENSITIVITY RATING: 30.0 MILLIVOLTS
STYLE DESIGNATOR: C1 ROUND FLUSH MTG

DC22379

AMMETER

NSN, MFG P/N

6625001090656

NSN

6625-00-109-0656

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DC22379

AMMETER

NSN, MFG P/N

6625001090656

NSN

6625-00-109-0656

MFG

US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR

Description

(NON-CORE DATA) PANEL FOR WHICH DESIGNED: NONMAGNETIC
ACCURACY IN PERCENT: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
BACKGROUND COLOR: WHITE SINGLE INDICATOR SINGLE RANGE
CIRCUIT ATTACHMENT METHOD AND QUANTITY: 2 THREADED STUD
CIRCUIT CURRENT FOR WHICH DESIGNED: DC
DIAL SCALE MARKING COLOR: BLACK SINGLE INDICATOR SINGLE RANGE
FEATURES PROVIDED: ZERO ADJUSTER
INSTALLATION DESIGN: PANEL
MATERIAL: PLASTIC
METER BODY DIAMETER BEHIND MOUNTING FLANGE: 2.760 INCHES NOMINAL
METER DEPTH BEHIND MOUNTING FLANGE: 1.840 INCHES NOMINAL
MOUNTING ARRANGEMENT STYLE: E5 THREE HOLE/STUD BOLT CIRCLE
MOUNTING BOLT CIRCLE DIAMETER: 3.160 INCHES NOMINAL
MOUNTING FACILITY TYPE AND QUANTITY: 3 UNTHREADED HOLE
MOUNTING HOLE DIAMETER: 0.156 INCHES NOMINAL
MOVEMENT SUSPENSION METHOD: JEWEL PIVOT BASE
MOVEMENT TYPE: MOVING COIL, PERMANENT MAGNET
OVERALL DIAMETER: 3.510 INCHES NOMINAL
OVERALL LENGTH: 2.220 INCHES NOMINAL
SCALE DIVISION QUANTITY: 60 SINGLE INDICATOR SINGLE RANGE
SENSITIVITY RATING: 30.0 MILLIVOLTS
STYLE DESIGNATOR: C1 ROUND FLUSH MTG

MILM6ATYPEMR25W1H1DCUA

AMMETER

NSN, MFG P/N

6625001090657

NSN

6625-00-109-0657

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MILM6ATYPEMR25W1H1DCUA

AMMETER

NSN, MFG P/N

6625001090657

NSN

6625-00-109-0657

MFG

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

Description

(NON-CORE DATA) PANEL FOR WHICH DESIGNED: NONMAGNETIC
ACCURACY IN PERCENT: -2.5 TO 2.5 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
BACKGROUND COLOR: WHITE SINGLE INDICATOR SINGLE RANGE
CIRCUIT ATTACHMENT METHOD AND QUANTITY: 2 THREADED STUD
CIRCUIT CURRENT FOR WHICH DESIGNED: DC
DIAL SCALE MARKING COLOR: BLACK SINGLE INDICATOR SINGLE RANGE
INSTALLATION DESIGN: PANEL
MANUFACTURERS CODE: 81349
MATERIAL: PLASTIC
MEASUREMENT RANGE: -100.0 TO 100.0 MICROAMPERES, DC SINGLE INDICATOR SINGLE RANGE
METER BODY DIAMETER BEHIND MOUNTING FLANGE: 2.210 INCHES NOMINAL
METER DEPTH BEHIND MOUNTING FLANGE: 1.860 INCHES NOMINAL
MOUNTING ARRANGEMENT STYLE: E5 THREE HOLE/STUD BOLT CIRCLE
MOUNTING BOLT CIRCLE DIAMETER: 2.440 INCHES NOMINAL
MOUNTING FACILITY TYPE AND QUANTITY: 3 UNTHREADED HOLE
MOUNTING HOLE DIAMETER: 0.125 INCHES NOMINAL
MOVEMENT TYPE: MOVING COIL, PERMANENT MAGNET
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE: MILM6ATYPEMR25W1H1DCUA
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE: MR25W1H1DCUA
OVERALL DIAMETER: 2.695 INCHES NOMINAL
SCALE DIVISION QUANTITY: 20 SINGLE INDICATOR SINGLE RANGE
SENSITIVITY RATING: 150.0 MILLIVOLTS
SPEC/STD CONTROLLING DATA:
STYLE DESIGNATOR: C1 ROUND FLUSH MTG

MR25W1H1DCUA

AMMETER

NSN, MFG P/N

6625001090657

NSN

6625-00-109-0657

View More Info

MR25W1H1DCUA

AMMETER

NSN, MFG P/N

6625001090657

NSN

6625-00-109-0657

MFG

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

Description

(NON-CORE DATA) PANEL FOR WHICH DESIGNED: NONMAGNETIC
ACCURACY IN PERCENT: -2.5 TO 2.5 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
BACKGROUND COLOR: WHITE SINGLE INDICATOR SINGLE RANGE
CIRCUIT ATTACHMENT METHOD AND QUANTITY: 2 THREADED STUD
CIRCUIT CURRENT FOR WHICH DESIGNED: DC
DIAL SCALE MARKING COLOR: BLACK SINGLE INDICATOR SINGLE RANGE
INSTALLATION DESIGN: PANEL
MANUFACTURERS CODE: 81349
MATERIAL: PLASTIC
MEASUREMENT RANGE: -100.0 TO 100.0 MICROAMPERES, DC SINGLE INDICATOR SINGLE RANGE
METER BODY DIAMETER BEHIND MOUNTING FLANGE: 2.210 INCHES NOMINAL
METER DEPTH BEHIND MOUNTING FLANGE: 1.860 INCHES NOMINAL
MOUNTING ARRANGEMENT STYLE: E5 THREE HOLE/STUD BOLT CIRCLE
MOUNTING BOLT CIRCLE DIAMETER: 2.440 INCHES NOMINAL
MOUNTING FACILITY TYPE AND QUANTITY: 3 UNTHREADED HOLE
MOUNTING HOLE DIAMETER: 0.125 INCHES NOMINAL
MOVEMENT TYPE: MOVING COIL, PERMANENT MAGNET
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE: MILM6ATYPEMR25W1H1DCUA
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE: MR25W1H1DCUA
OVERALL DIAMETER: 2.695 INCHES NOMINAL
SCALE DIVISION QUANTITY: 20 SINGLE INDICATOR SINGLE RANGE
SENSITIVITY RATING: 150.0 MILLIVOLTS
SPEC/STD CONTROLLING DATA:
STYLE DESIGNATOR: C1 ROUND FLUSH MTG

2285G

GALVANOMETER

NSN, MFG P/N

6625001090823

NSN

6625-00-109-0823

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2285G

GALVANOMETER

NSN, MFG P/N

6625001090823

NSN

6625-00-109-0823

MFG

LEEDS AND NORTHRUP CO A UNIT OF GENERAL SIGNAL CORP

Description

CIRCUIT CURRENT FOR WHICH DESIGNED: DC
DESIGN CONTROL REFERENCE: 2285G
MANUFACTURERS CODE: 31922
THE MANUFACTURERS DATA:

410

METER,FIELD STRENGTH

NSN, MFG P/N

6625001090830

NSN

6625-00-109-0830

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410

METER,FIELD STRENGTH

NSN, MFG P/N

6625001090830

NSN

6625-00-109-0830

MFG

SMART MACHINES INC. DBA BARKER & WILLIAMSON

Description

CIRCUIT CURRENT FOR WHICH DESIGNED: AC
INSTALLATION DESIGN: BENCH
MATERIAL: ALUMINUM
MEASUREMENT RANGE: -20.0 TO 200000.0 HERTZ SINGLE INDICATOR 1ST RANGE 0.0 TO 100000.0 HERTZ SINGLE INDICATOR 2ND RANGE 0.0 TO 50.0 DECIBELS SINGLE INDICATOR 3RD RANGE
OPERATING VOLTAGE RATING IN VOLTS: 115.0 AC NOMINAL
OVERALL HEIGHT: 9.000 INCHES NOMINAL
OVERALL WIDTH: 11.250 INCHES NOMINAL
PHASE: SINGLE
STYLE DESIGNATOR: A4 RECTANGULAR SURFACE MTG

MILM6

AMMETER

NSN, MFG P/N

6625001092061

NSN

6625-00-109-2061

View More Info

MILM6

AMMETER

NSN, MFG P/N

6625001092061

NSN

6625-00-109-2061

MFG

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

Description

(NON-CORE DATA) PANEL FOR WHICH DESIGNED: NONMAGNETIC
ACCURACY IN PERCENT: -2.5 TO 2.5 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
BACKGROUND COLOR: WHITE SINGLE INDICATOR SINGLE RANGE
CIRCUIT ATTACHMENT METHOD AND QUANTITY: 2 THREADED STUD
CIRCUIT CURRENT FOR WHICH DESIGNED: DC
DIAL SCALE MARKING COLOR: BLACK SINGLE INDICATOR SINGLE RANGE
INSTALLATION DESIGN: PANEL
MANUFACTURERS CODE: 81349
MATERIAL: PLASTIC
MEASUREMENT RANGE: 0.0 TO 200.0 MILLIAMPERES, DC SINGLE INDICATOR SINGLE RANGE
METER BODY DIAMETER BEHIND MOUNTING FLANGE: 2.210 INCHES NOMINAL
METER DEPTH BEHIND MOUNTING FLANGE: 1.600 INCHES NOMINAL
MOUNTING BOLT CIRCLE DIAMETER: 2.440 INCHES NOMINAL
MOUNTING FACILITY TYPE AND QUANTITY: 3 UNTHREADED HOLE
MOUNTING HOLE DIAMETER: 0.125 INCHES NOMINAL
MOVEMENT SUSPENSION METHOD: JEWEL PIVOT BASE
MOVEMENT TYPE: MOVING COIL, PERMANENT MAGNET
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE: MILM6
OVERALL DIAMETER: 2.695 INCHES NOMINAL
SCALE DIVISION QUANTITY: 40 SINGLE INDICATOR SINGLE RANGE
SENSITIVITY RATING: 150.0 MILLIVOLTS
SPEC/STD CONTROLLING DATA:
STYLE DESIGNATOR: C1 ROUND FLUSH MTG

MR25W200DCMA

AMMETER

NSN, MFG P/N

6625001092061

NSN

6625-00-109-2061

View More Info

MR25W200DCMA

AMMETER

NSN, MFG P/N

6625001092061

NSN

6625-00-109-2061

MFG

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

Description

(NON-CORE DATA) PANEL FOR WHICH DESIGNED: NONMAGNETIC
ACCURACY IN PERCENT: -2.5 TO 2.5 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
BACKGROUND COLOR: WHITE SINGLE INDICATOR SINGLE RANGE
CIRCUIT ATTACHMENT METHOD AND QUANTITY: 2 THREADED STUD
CIRCUIT CURRENT FOR WHICH DESIGNED: DC
DIAL SCALE MARKING COLOR: BLACK SINGLE INDICATOR SINGLE RANGE
INSTALLATION DESIGN: PANEL
MANUFACTURERS CODE: 81349
MATERIAL: PLASTIC
MEASUREMENT RANGE: 0.0 TO 200.0 MILLIAMPERES, DC SINGLE INDICATOR SINGLE RANGE
METER BODY DIAMETER BEHIND MOUNTING FLANGE: 2.210 INCHES NOMINAL
METER DEPTH BEHIND MOUNTING FLANGE: 1.600 INCHES NOMINAL
MOUNTING BOLT CIRCLE DIAMETER: 2.440 INCHES NOMINAL
MOUNTING FACILITY TYPE AND QUANTITY: 3 UNTHREADED HOLE
MOUNTING HOLE DIAMETER: 0.125 INCHES NOMINAL
MOVEMENT SUSPENSION METHOD: JEWEL PIVOT BASE
MOVEMENT TYPE: MOVING COIL, PERMANENT MAGNET
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE: MILM6
OVERALL DIAMETER: 2.695 INCHES NOMINAL
SCALE DIVISION QUANTITY: 40 SINGLE INDICATOR SINGLE RANGE
SENSITIVITY RATING: 150.0 MILLIVOLTS
SPEC/STD CONTROLLING DATA:
STYLE DESIGNATOR: C1 ROUND FLUSH MTG

3011926G1

COUPLER,TEST SET

NSN, MFG P/N

6625001096005

NSN

6625-00-109-6005

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3011926G1

COUPLER,TEST SET

NSN, MFG P/N

6625001096005

NSN

6625-00-109-6005

MFG

BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION I

18930

GATE,ELECTRONIC

NSN, MFG P/N

6625001096006

NSN

6625-00-109-6006

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18930

GATE,ELECTRONIC

NSN, MFG P/N

6625001096006

NSN

6625-00-109-6006

MFG

METERMASTER INC METERMOD DIV

Description

DESIGN CONTROL REFERENCE: 18930
III FSC APPLICATION DATA: RATIOMETER,TEST BENCH
MANUFACTURERS CODE: 27197
THE MANUFACTURERS DATA:

013-0085-00

TIP,TEST PROD

NSN, MFG P/N

6625001096046

NSN

6625-00-109-6046

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013-0085-00

TIP,TEST PROD

NSN, MFG P/N

6625001096046

NSN

6625-00-109-6046

MFG

TEKTRONIX INC. DBA TEKTRONIX

Description

END SHAPE: POINTED
MOUNTING CONFIGURATION: PRESS FIT TO PROBE
OVERALL DIAMETER: 0.531 INCHES NOMINAL
OVERALL LENGTH: 1.031 INCHES NOMINAL

111179

AMMETER

NSN, MFG P/N

6625001096047

NSN

6625-00-109-6047

View More Info

111179

AMMETER

NSN, MFG P/N

6625001096047

NSN

6625-00-109-6047

MFG

FLUKE CORPORATION

Description

FEATURES PROVIDED: ZERO ADJUSTER
INSTALLATION DESIGN: PANEL
MOVEMENT SUSPENSION METHOD: TAUT BAND

2901-111179

AMMETER

NSN, MFG P/N

6625001096047

NSN

6625-00-109-6047

View More Info

2901-111179

AMMETER

NSN, MFG P/N

6625001096047

NSN

6625-00-109-6047

MFG

FLUKE CORPORATION

Description

FEATURES PROVIDED: ZERO ADJUSTER
INSTALLATION DESIGN: PANEL
MOVEMENT SUSPENSION METHOD: TAUT BAND

75T

AMMETER

NSN, MFG P/N

6625001096047

NSN

6625-00-109-6047

View More Info

75T

AMMETER

NSN, MFG P/N

6625001096047

NSN

6625-00-109-6047

MFG

JEWELL INSTRUMENTS LLC DBA MODUTEC

Description

FEATURES PROVIDED: ZERO ADJUSTER
INSTALLATION DESIGN: PANEL
MOVEMENT SUSPENSION METHOD: TAUT BAND

65700-90850-041

TEST SET,ELECTRONIC SYSTEMS

NSN, MFG P/N

6625001096389

NSN

6625-00-109-6389

View More Info

65700-90850-041

TEST SET,ELECTRONIC SYSTEMS

NSN, MFG P/N

6625001096389

NSN

6625-00-109-6389

MFG

SIKORSKY AIRCRAFT CORPORATION

S6170-90039-6

TEST SET,SERVO

NSN, MFG P/N

6625001096431

NSN

6625-00-109-6431

View More Info

S6170-90039-6

TEST SET,SERVO

NSN, MFG P/N

6625001096431

NSN

6625-00-109-6431

MFG

SIKORSKY AIRCRAFT CORPORATION

866033-505

INDICATOR,DIGITAL DISPLAY

NSN, MFG P/N

6625001097109

NSN

6625-00-109-7109

View More Info

866033-505

INDICATOR,DIGITAL DISPLAY

NSN, MFG P/N

6625001097109

NSN

6625-00-109-7109

MFG

NORTHROP GRUMMAN GUIDANCE AND ELECTRONICS COMPANY INC. DBA NAVIGATION SYSTEMS DIVISION DIV NAVIGATION SYSTEMS DIVISION