A138-1 — CAPACITOR,FIXED,ELECTROLYTIC

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

A138-1: CAPACITOR,FIXED,ELECTROLYTIC.

The CAPACITOR,FIXED,ELECTROLYTIC is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include material: IRON ALLOY 660 OVERALL, thickness: 0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN, corner_shape: SQUARE ALL CORNERS, hole_diameter: 0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN, overall_length: 0.8750 INCHES NOMINAL IN, hardness_rating: 20.0 ROCKWELL C MINIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5365-00-426-1715, 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

A138-1

NSN: 5365-00-426-1715
NIINs: 004261715, 004479097, 012143491, 015036166
FSC: 5365 — Bushings, Rings, Shims, and Spacers
CAGE: 61208 — TWIN DISC, INCORPORATED DBA TWIN DISC MID-ATLANTIC (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
thickness	0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
corner_shape	SQUARE ALL CORNERS
hole_diameter	0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
overall_length	0.8750 INCHES NOMINAL IN
hardness_rating	20.0 ROCKWELL C MINIMUM
overall_diameter	0.870 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN
style_designator	SOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter	3.7500 INCHES MINIMUM AND 3.7550 INCHES MAXIMUM IN
body_outside_diameter	4.4100 INCHES MINIMUM AND 4.4200 INCHES MAXIMUM IN
peripheral_shape_style	ROUND
center_hole_shape_style	ROUND
NSN	5365-00-426-1715

COMPONENT DIAGRAM

KEY FEATURES

•

CORNER SHAPE: SQUARE ALL CORNERS

•

BODY OUTSIDE DIAMETER: 4.4100 INCHES MINIMUM AND 4.4200 INCHES MAXIMUM IN

•

STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES

•

BODY INSIDE DIAMETER: 3.7500 INCHES MINIMUM AND 3.7550 INCHES MAXIMUM IN

•

MATERIAL: STEEL OVERALL

TYPICAL APPLICATIONS

RAID cache protection during power loss events
Write-back cache enablement for storage controllers
Enterprise server data integrity assurance
Hot-swap battery/capacitor replacement in production

TECHNICAL CHARACTERISTICS

CORNER SHAPE	SQUARE ALL CORNERS
BODY OUTSIDE DIAMETER	4.4100 INCHES MINIMUM AND 4.4200 INCHES MAXIMUM IN
STYLE DESIGNATOR	SOLID, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH	0.8750 INCHES NOMINAL IN
BODY INSIDE DIAMETER	3.7500 INCHES MINIMUM AND 3.7550 INCHES MAXIMUM IN
MATERIAL	STEEL OVERALL

SUBSTITUTES & CROSS-REFERENCES 3

37334DReference document

Same NSN cross-reference

Reference document — Secondary reference

2N9363Reference document

Same NSN cross-reference

Reference document — Secondary reference

4B4763Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

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

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FREQUENTLY ASKED QUESTIONS

What is A138-1?

A138-1 is a CAPACITOR,FIXED,ELECTROLYTIC.

What parts can replace A138-1?

There are 3 known substitutes for A138-1: 37334D, 2N9363, 4B4763. Substitute compatibility should be verified for your specific system.

What is the NSN for A138-1?

A138-1 is cataloged in the U.S. Government catalog under NSN 5365-00-426-1715. This indicates validated use in U.S. government and defense supply chains.

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A138-1 — CAPACITOR,FIXED,ELECTROLYTIC

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