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P66838 — VALVE,LINEAR,DIRECTIONAL CONTROL

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

P66838: VALVE,LINEAR,DIRECTIONAL CONTROL.

VALVE,LINEAR,DIRECTIONAL CONTROL. Key specifications include material: COPPER ALLOY OVERALL, corner_shape: SQUARE ALL CORNERS, thread_class: 2B, overall_length: 2.9950 INCHES MINIMUM AND 3.0050 INCHES MAXIMUM IN, connection_type: THREADED INTERNAL TUBE, hardness_rating: 170.0 BRINELL STANDARD MINIMUM AND 225.0 BRINELL STANDARD MAXIMUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-037-8068, 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
P66838
NSN: 3120-00-037-8068
NIINs: 000378068, 013904476
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 04285 — ATHEY PRODUCTS CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
corner_shapeSQUARE ALL CORNERS
thread_class2B
overall_length2.9950 INCHES MINIMUM AND 3.0050 INCHES MAXIMUM IN
connection_typeTHREADED INTERNAL TUBE
hardness_rating170.0 BRINELL STANDARD MINIMUM AND 225.0 BRINELL STANDARD MAXIMUM OVERALL
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
nominal_thread_size0.562 INCHES IN
body_inside_diameter1.5070 INCHES MINIMUM AND 1.5110 INCHES MAXIMUM IN
body_outside_diameter1.7520 INCHES MINIMUM AND 1.7530 INCHES MAXIMUM IN
valve_operation_methodMANUAL
end_connection_quantity2
NSN3120-00-037-8068
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: P66838 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY OUTSIDE DIAMETER: 1.7520 INCHES MINIMUM AND 1.7530 INCHES MAXIMUM IN
•
HARDNESS RATING: 170.0 BRINELL STANDARD MINIMUM AND 225.0 BRINELL STANDARD MAXIMUM OVERALL
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL DOCUMENT AND CLASSIFICATION: 46-B-29A FSCM 46717 MFR REF SINGLE MATERIAL RESPONSE OVERALL A
•
BODY INSIDE DIAMETER: 1.5070 INCHES MINIMUM AND 1.5110 INCHES MAXIMUM IN
•
LUBRICANT ACCOMMODATION STYLE: GROOVED SPIRAL AXIAL
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER1.7520 INCHES MINIMUM AND 1.7530 INCHES MAXIMUM IN
HARDNESS RATING170.0 BRINELL STANDARD MINIMUM AND 225.0 BRINELL STANDARD MAXIMUM OVERALL
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATION46-B-29A FSCM 46717 MFR REF SINGLE MATERIAL RESPONSE OVERALL A
OVERALL LENGTH2.9950 INCHES MINIMUM AND 3.0050 INCHES MAXIMUM IN
BODY INSIDE DIAMETER1.5070 INCHES MINIMUM AND 1.5110 INCHES MAXIMUM IN
LUBRICANT ACCOMMODATION STYLEGROOVED SPIRAL AXIAL
MATERIALCOPPER ALLOY OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
18LA980-24Reference document
Same NSN cross-reference
Reference document — Secondary reference
LA980-24Reference document
Same NSN cross-reference
Reference document — Design control — primary 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 P66838?
P66838 is a VALVE,LINEAR,DIRECTIONAL CONTROL.
What parts can replace P66838?
There are 2 known substitutes for P66838: 18LA980-24, LA980-24. Substitute compatibility should be verified for your specific system.
What is the NSN for P66838?
P66838 is cataloged in the U.S. Government catalog under NSN 3120-00-037-8068. 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.