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68-XA-4 PC2 — GEAR AND SHAFT ASSEMBLY,HELICAL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

68-XA-4 PC2: GEAR AND SHAFT ASSEMBLY,HELICAL.

GEAR AND SHAFT ASSEMBLY,HELICAL. Key specifications include material: STEEL, shank_diameter: 1.834 INCHES MINIMUM AND 1.854 INCHES MAXIMUM IN, pressure_rating: 425.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS, outside_diameter: 16.8750 INCHES MAXIMUM IN, style_designator: SWING CHECK, end_item_identification: W/S NIMITZ CLASS CVN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-461-2977, 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
68-XA-4 PC2
NSN: 4820-01-461-2977
FSC: 4820 — Valves, Nonpowered
CAGE: 53553 — AMETEK INC SCHUTTE AND KOERTING DIV (USA)
SPECIFICATIONS
materialSTEEL
shank_diameter1.834 INCHES MINIMUM AND 1.854 INCHES MAXIMUM IN
pressure_rating425.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
outside_diameter16.8750 INCHES MAXIMUM IN
style_designatorSWING CHECK
end_item_identificationW/S NIMITZ CLASS CVN
media_for_which_designedHYDRAULIC FLUID
specification/standard_data81349MIL-S-901D GOVERNMENT STANDARD
flange_seat_to_disk_end_height2.750 INCHES MAXIMUM IN
NSN4820-01-461-2977
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 68-XA-4 PC2 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SHANK DIAMETER: 1.834 INCHES MINIMUM AND 1.854 INCHES MAXIMUM IN
•
FLANGE SEAT TO DISK END HEIGHT: 2.750 INCHES MAXIMUM IN
•
PRESSURE RATING: 425.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
•
OUTSIDE DIAMETER: 16.8750 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SWING CHECK
•
SPECIFICATION/STANDARD DATA: 81349MIL-S-901D GOVERNMENT STANDARD
•
MEDIA FOR WHICH DESIGNED: HYDRAULIC FLUID
•
TEST DATA DOCUMENT: 7W166-26593639 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
TECHNICAL CHARACTERISTICS
SHANK DIAMETER1.834 INCHES MINIMUM AND 1.854 INCHES MAXIMUM IN
FLANGE SEAT TO DISK END HEIGHT2.750 INCHES MAXIMUM IN
PRESSURE RATING425.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
OUTSIDE DIAMETER16.8750 INCHES MAXIMUM IN
STYLE DESIGNATORSWING CHECK
SPECIFICATION/STANDARD DATA81349MIL-S-901D GOVERNMENT STANDARD
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID
TEST DATA DOCUMENT7W166-26593639 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
END ITEM IDENTIFICATIONW/S NIMITZ CLASS CVN
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 1
68-XA-4Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 68-XA-4 PC2?
68-XA-4 PC2 is a GEAR AND SHAFT ASSEMBLY,HELICAL.
What parts can replace 68-XA-4 PC2?
There is 1 known substitute for 68-XA-4 PC2: 68-XA-4. Substitute compatibility should be verified for your specific system.
What is the NSN for 68-XA-4 PC2?
68-XA-4 PC2 is cataloged in the U.S. Government catalog under NSN 4820-01-461-2977. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.