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ASTM B 438 — BEARING,WASHER,THRUST

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

ASTM B 438: BEARING,WASHER,THRUST.

The BEARING,WASHER,THRUST is a the manufacturer industrial component. Key specifications include diameter: 0.6270 INCHES NOMINAL IN, material: OIL LUBRICATING LUBRICATION, outside_diameter: 1.1870 INCHES NOMINAL IN, style_designator: ROUND, overall_thickness: 0.1870 INCHES NOMINAL IN, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-080-0089, 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
ASTM B 438
NSN: 3120-00-080-0089
NIINs: 000800089, 001018737, 001153038, 001153108, 001597137, 001597141, 001597148, 001671960, 002778604, 002778605, 002778606, 002778607, 002778608, 002778609, 002778610, 002779531, 002876437, 002876438, 002876766, 002877647, 002885969, 002885970, 002885972, 002885974, 002885975, 002885976, 002885978, 004256467, 004453447, 004832294, 004894277, 004934110, 005298021, 005498098, 005851060, 005963468, 005963469, 006186480, 006615308, 007666158, 008073532, 008336138, 008336139, 008336140, 008336141, 008352812, 008918887, 008998830, 009370164, 009459566, 010490696, 010823360, 011067588, 011261685, 012240580, 012643673, 012820946, 012896184, 013241083, 013568263, 013698358, 013770788, 014131802, 016843194
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 81346 — AMERICAN SOCIETY FOR TESTING AND MATERIALS DBA ASTM INTERNATIONAL (USA)
SPECIFICATIONS
diameter0.6270 INCHES NOMINAL IN
materialOIL LUBRICATING LUBRICATION
outside_diameter1.1870 INCHES NOMINAL IN
style_designatorROUND
overall_thickness0.1870 INCHES NOMINAL IN
center_hole_shape_styleROUND
end_item_identificationNSN:2350-01-669-0331;AMPHIBIOUS COMBAT VEHICLE.
cross-sectional_shape_styleRECTANGULAR
part_name_assigned_by_controlling_agencyBEARIN WASHER THRUST,SINTERED BRONZE,OIL IMPREGNATED.
NSN3120-00-080-0089
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: ASTM B 438 · 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: 0.5640 INCHES MINIMUM AND 0.5650 INCHES MAXIMUM IN
•
HARDNESS RATING: 30.0 ROCKWELL C MINIMUM AND 70.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-L-15016, SYMBOL 2190 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
•
BODY INSIDE DIAMETER: 0.4380 INCHES MINIMUM AND 0.4390 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER0.5640 INCHES MINIMUM AND 0.5650 INCHES MAXIMUM IN
HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 70.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-L-15016, SYMBOL 2190 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-8657,TYPE 1,COMP A MIL SPEC 1ST MATERIAL RESPONSE OR MIL-B-8657,TYPE 1,COMP B MIL SPEC 2ND MATERIAL RESPONSE OVERALL
OVERALL LENGTH0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.4380 INCHES MINIMUM AND 0.4390 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA1 TYPE OR A COMPOSITION OR B COMPOSITION
MATERIALCOPPER ALLOY OVERALL
SUBSTITUTES & CROSS-REFERENCES 4
910401Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
MILB5687Reference document
Same NSN cross-reference
Reference document — Identification reference
MS17795-64Reference document
Same NSN cross-reference
Reference document — Secondary reference
AA515-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ASTM B 438?
ASTM B 438 is a BEARING,WASHER,THRUST.
What parts can replace ASTM B 438?
There are 4 known substitutes for ASTM B 438: 910401, MILB5687, MS17795-64 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ASTM B 438?
ASTM B 438 is cataloged in the U.S. Government catalog under NSN 3120-00-080-0089. This indicates validated use in U.S. government and defense supply chains.
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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.