556-6985454-6B — PISTON,LINEAR ACTUATING CYLINDER

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

556-6985454-6B: PISTON,LINEAR ACTUATING CYLINDER.

PISTON,LINEAR ACTUATING CYLINDER. Key specifications include material: NICKEL ALLOY, overall_length: 4.060 INCHES NOMINAL IN, outside_diameter: 13.467 INCHES MINIMUM AND 13.470 INCHES MAXIMUM IN, special_features: PISTON HAS 8 MOUNTING HOLES 1.25 IN DEPTH, .500-13UNC-2B WITH 45 DEG SEPARATION. IN, end_item_identification: ACCUMULATOR ASSEMBLY; LA AND SEAWOLF CLASS SUBMARINES., part_name_assigned_by_controlling_agency: PISTON, ACCUMULATOR.

This part is cataloged in the U.S. Government catalog under NSN 3040-01-500-9029, 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

556-6985454-6B

NSN: 3040-01-500-9029
NIINs: 015009029, 016724409
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)

SPECIFICATIONS

material	NICKEL ALLOY
overall_length	4.060 INCHES NOMINAL IN
outside_diameter	13.467 INCHES MINIMUM AND 13.470 INCHES MAXIMUM IN
special_features	PISTON HAS 8 MOUNTING HOLES 1.25 IN DEPTH, .500-13UNC-2B WITH 45 DEG SEPARATION. IN
ring_groove_quantity	2
end_item_identification	ACCUMULATOR ASSEMBLY; LA AND SEAWOLF CLASS SUBMARINES.
part_name_assigned_by_controlling_agency	PISTON, ACCUMULATOR
NSN	3040-01-500-9029

COMPONENT DIAGRAM

KEY FEATURES

•

OUTSIDE DIAMETER: 13.467 INCHES MINIMUM AND 13.470 INCHES MAXIMUM IN

•

RING GROOVE QUANTITY: 2

•

MATERIAL: NICKEL ALLOY

TECHNICAL CHARACTERISTICS

OUTSIDE DIAMETER	13.467 INCHES MINIMUM AND 13.470 INCHES MAXIMUM IN
OVERALL LENGTH	4.060 INCHES NOMINAL IN
RING GROOVE QUANTITY	2
SPECIAL FEATURES	PISTON HAS 8 MOUNTING HOLES 1.25 IN DEPTH, .500-13UNC-2B WITH 45 DEG SEPARATION. IN
PART NAME ASSIGNED BY CONTROLLING AGENCY	PISTON, ACCUMULATOR
END ITEM IDENTIFICATION	ACCUMULATOR ASSEMBLY; LA AND SEAWOLF CLASS SUBMARINES.
MATERIAL	NICKEL ALLOY

SUBSTITUTES & CROSS-REFERENCES 3

H642-6930-6ASame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

H642-6930-6BSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

556-6985454Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

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 556-6985454-6B?

556-6985454-6B is a PISTON,LINEAR ACTUATING CYLINDER.

What parts can replace 556-6985454-6B?

There are 3 known substitutes for 556-6985454-6B: H642-6930-6A, H642-6930-6B, 556-6985454. Substitute compatibility should be verified for your specific system.

What is the NSN for 556-6985454-6B?

556-6985454-6B is cataloged in the U.S. Government catalog under NSN 3040-01-500-9029. This indicates validated use in U.S. government and defense supply chains.

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556-6985454-6B — PISTON,LINEAR ACTUATING CYLINDER

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