TM-20 — MODEM,COMMUNICATIONS

✓ Government record, cited

— · MRO · MRO_GENERAL

PRODUCT OVERVIEW

TM-20: MODEM,COMMUNICATIONS.

The MODEM,COMMUNICATIONS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, scale_range: +0.000 TO 20.000 INCHES IN, bore_diameter: 20.00 MILLIMETERS NOMINAL MM, control_valve: NOT PROVIDED, overall_width: 19.0 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-156-6716, 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

MRO→ MRO_GENERAL→ TM-20

NSN: 3110-00-156-6716
NIINs: 001566716, 005276757, 013788420, 016633306, 016707271
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60380 — TIMKEN AEROSPACE, INC DBA TORRINGTON PRODUCT (USA)

SPECIFICATIONS

material	STEEL OVERALL
bore_shape	STRAIGHT
scale_range	+0.000 TO 20.000 INCHES IN
bore_diameter	20.00 MILLIMETERS NOMINAL MM
control_valve	NOT PROVIDED
overall_width	19.0 INCHES NOMINAL IN
zero_adjuster	PROVIDED
load_direction	RADIAL
overall_height	3.5 INCHES NOMINAL IN
overall_length	16.0 INCHES NOMINAL IN
surface_finish	GROUND
connection_type	THREADED
NSN	3110-00-156-6716

COMPONENT DIAGRAM

KEY FEATURES

•

INTERNAL FIT-UP DESIGNATION: STANDARD

•

SURFACE FINISH: GROUND

•

STYLE DESIGNATOR: COUNTERBORED OUTER RING, MAGNETO TYPE, S EPARABLE

•

OVERALL OUTSIDE DIAMETER: 52.00 MILLIMETERS NOMINAL MM

•

BORE SHAPE: STRAIGHT

•

NONDEFINITIVE SPEC/STD DATA: 132 TYPE AND 00 GRADE

•

LOAD DIRECTION: RADIAL

TECHNICAL CHARACTERISTICS

INTERNAL FIT-UP DESIGNATION	STANDARD
SURFACE FINISH	GROUND
STYLE DESIGNATOR	COUNTERBORED OUTER RING, MAGNETO TYPE, S EPARABLE
OVERALL WIDTH	15.00 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER	52.00 MILLIMETERS NOMINAL MM
BORE SHAPE	STRAIGHT
NONDEFINITIVE SPEC/STD DATA	132 TYPE AND 00 GRADE
LOAD DIRECTION	RADIAL
END ITEM IDENTIFICATION	LOGISTICS SUPPORT VESSEL
STANDARD TOLERANCE DESIGNATION	ABEC NO.1

SUBSTITUTES & CROSS-REFERENCES 3

FFB171Reference document

Same NSN cross-reference

Reference document — Identification reference

504902-21Reference document

Same NSN cross-reference

Reference document — Secondary reference

M20Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is TM-20?

TM-20 is a MODEM,COMMUNICATIONS. It is classified as a MRO (MRO_GENERAL).

What parts can replace TM-20?

There are 3 known substitutes for TM-20: FFB171, 504902-21, M20. Substitute compatibility should be verified for your specific system.

What is the NSN for TM-20?

TM-20 is cataloged in the U.S. Government catalog under NSN 3110-00-156-6716. This indicates validated use in U.S. government and defense supply chains.

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