34857 — PISTON,LINEAR ACTUATING CYLINDER

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

34857: PISTON,LINEAR ACTUATING CYLINDER.

PISTON,LINEAR ACTUATING CYLINDER. Key specifications include material: STEEL CORROSION RESISTING SPRING, case_style: SQUARE, seal_width: 0.438 INCHES NOMINAL IN, outside_diameter: 4.254 INCHES NOMINAL IN, surface_treatment: PLASTIC CASE, housing_bore_diameter: 4.249 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 2810-00-448-6742, 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

34857

NSN: 2810-00-448-6742
NIINs: 004486742, 012366337, 013776988, 015190923
FSC: 2810 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components
CAGE: 00198 — PRATT & WHITNEY CANADA CORP DIV PRATT & WHITNEY CANADA CORP. (CAN)

SPECIFICATIONS

material	STEEL CORROSION RESISTING SPRING
case_style	SQUARE
seal_width	0.438 INCHES NOMINAL IN
outside_diameter	4.254 INCHES NOMINAL IN
surface_treatment	PLASTIC CASE
housing_bore_diameter	4.249 INCHES NOMINAL IN
sealing_element_style	VERTICAL
end_item_identification	SEAWOLF CLASS SSN;GEARBOX ASSEMBLY
accommodated_shaft_diameter	3.500 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed	3600 FEET PER MINUTE FT
NSN	2810-00-448-6742

COMPONENT DIAGRAM

KEY FEATURES

•

GENERAL CHARACTERISTICS ITEM DESCRIPTION: MATL MAGNESIUM PER AMS 4484; 1.801 IN. MIN AND 1.806 IN. MAX LONG; BODY 7.434 IN. MIN AND 7.436 IN. MAX OD; FLANGE 8.3125 IN. OD; SECOND END 7.438 IN. MIN AND 7.440 IN. MAX OD; 3 HOLES 0.40625 IN. DIA; 6 HOLES 0.265625 IN. DIA; 1 HOLE 0.489 IN. DIA IN

TECHNICAL CHARACTERISTICS

GENERAL CHARACTERISTICS ITEM DESCRIPTION	MATL MAGNESIUM PER AMS 4484; 1.801 IN. MIN AND 1.806 IN. MAX LONG; BODY 7.434 IN. MIN AND 7.436 IN. MAX OD; FLANGE 8.3125 IN. OD; SECOND END 7.438 IN. MIN AND 7.440 IN. MAX OD; 3 HOLES 0.40625 IN. DIA; 6 HOLES 0.265625 IN. DIA; 1 HOLE 0.489 IN. DIA IN
END ITEM IDENTIFICATION	ACFT ENG R1830

SUBSTITUTES & CROSS-REFERENCES 1

AS34857Reference 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 34857?

34857 is a PISTON,LINEAR ACTUATING CYLINDER.

What parts can replace 34857?

There is 1 known substitute for 34857: AS34857. Substitute compatibility should be verified for your specific system.

What is the NSN for 34857?

34857 is cataloged in the U.S. Government catalog under NSN 2810-00-448-6742. This indicates validated use in U.S. government and defense supply chains.

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34857 — PISTON,LINEAR ACTUATING CYLINDER

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