B128-2 — RESISTOR,VARIABLE,NONWIRE WOUND,

✓ Government record, cited

— · MRO · MRO_GENERAL

PRODUCT OVERVIEW

B128-2: RESISTOR,VARIABLE,NONWIRE WOUND,.

RESISTOR,VARIABLE,NONWIRE WOUND,. Key specifications include material: FIBER AND RUBBER BODY, body_style: CYLINDRICAL BUSHING MOUNTED, body_length: 1.250 INCHES NOMINAL IN, shaft_style: ROUND, shaft_length: 0.750 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN, actuator_type: DUAL CONCENTRIC. This part is cataloged in the U.S.

Government catalog under NSN 3030-00-079-8187, 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→ B128-2

NSN: 3030-00-079-8187
NIINs: 000798187, 008655427, 015658978
FSC: 3030 — Belting, Drive Belts, Fan Belts, and Accessories
CAGE: 04NP0 — CONTITECH USA, INC DBA VEYANCE TECHNOLOGIES (USA)

SPECIFICATIONS

material	FIBER AND RUBBER BODY
body_style	CYLINDRICAL BUSHING MOUNTED
body_length	1.250 INCHES NOMINAL IN
shaft_style	ROUND
shaft_length	0.750 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
actuator_type	DUAL CONCENTRIC
belt_quantity	2
body_diameter	1.312 INCHES NOMINAL IN
shaft_diameter	0.187 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
mounting_method	STANDARD BUSHING
performance_type	STANDARD CAPACITY
section_quantity	3
NSN	3030-00-079-8187

COMPONENT DIAGRAM

KEY FEATURES

•

STRENGTHENING FEATURE: FIBER CORD

•

STYLE DESIGNATOR: PLAIN, COG OR NOTCHED

•

BELT QUANTITY: 2

•

CROSS-SECTIONAL SIZE: B

•

MATERIAL: FIBER AND RUBBER BODY

•

PERFORMANCE TYPE: STANDARD CAPACITY

•

NOMINAL PITCH LENGTH: 129.800 INCHES IN

TECHNICAL CHARACTERISTICS

STRENGTHENING FEATURE	FIBER CORD
STYLE DESIGNATOR	PLAIN, COG OR NOTCHED
BELT QUANTITY	2
CROSS-SECTIONAL SIZE	B
MATERIAL	FIBER AND RUBBER BODY
PERFORMANCE TYPE	STANDARD CAPACITY
NOMINAL PITCH LENGTH	129.800 INCHES IN

SUBSTITUTES & CROSS-REFERENCES 2

MS39256-2B128Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

292549Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusCancelled· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is B128-2?

B128-2 is a RESISTOR,VARIABLE,NONWIRE WOUND,. It is classified as a MRO (MRO_GENERAL).

What parts can replace B128-2?

There are 2 known substitutes for B128-2: MS39256-2B128, 292549. Substitute compatibility should be verified for your specific system.

What is the NSN for B128-2?

B128-2 is cataloged in the U.S. Government catalog under NSN 3030-00-079-8187. This indicates validated use in U.S. government and defense supply chains.

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B128-2 — RESISTOR,VARIABLE,NONWIRE WOUND,

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