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NAS74 — BEARING,PLAIN,SELF-ALIGNING

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

NAS74: BEARING,PLAIN,SELF-ALIGNING.

The BEARING,PLAIN,SELF-ALIGNING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 630 OVERALL, corner_shape: SQUARE INSIDE LEFT CORNER, flange_width: 0.0550 INCHES MINIMUM AND 0.0600 INCHES MAXIMUM IN, bore_diameter: 0.4370 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN, overall_length: 1.2550 INCHES MINIMUM AND 1.2600 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-045-4944, 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
NAS74
NSN: 3120-00-045-4944
NIINs: 000454944, 000519756, 000742356, 001514843, 005542108, 005542116, 005800676, 006614155, 006614229, 006614251, 006614313, 008013131, 008184687, 009028328, 009071186, 009364578, 009399300, 009412394, 009494634, 010069147, 010385443, 011312322, 011441722, 011544360, 011692122, 011792877, 011854729, 013973522, 016709868
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialCOPPER ALLOY 630 OVERALL
corner_shapeSQUARE INSIDE LEFT CORNER
flange_width0.0550 INCHES MINIMUM AND 0.0600 INCHES MAXIMUM IN
bore_diameter0.4370 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN
overall_length1.2550 INCHES MINIMUM AND 1.2600 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
v_groove_angle90.0 DEGREES MINIMUM
v_groove_width0.3710 INCHES MINIMUM AND 0.3760 INCHES MAXIMUM IN
hardness_rating55.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM INNER MEMBER
special_featuresID AND OD TO BE PARALLEL AND CONCENTRIC WITHIN 0.0300 TIR
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
surface_treatmentCADMIUM OVERALL
NSN3120-00-045-4944
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: NAS74 · 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 INSIDE RIGHT CORNER
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
BODY OUTSIDE DIAMETER: 0.6210 INCHES MINIMUM AND 0.6230 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-6946 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE INSIDE RIGHT CORNER
CORNER SHAPESQUARE INSIDE LEFT CORNER
CORNER SHAPECHAMFERED OUTSIDE LEFT CORNER
CORNER SHAPECHAMFERED OUTSIDE RIGHT CORNER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
BODY OUTSIDE DIAMETER0.6210 INCHES MINIMUM AND 0.6230 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-6946 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH0.4420 INCHES MINIMUM AND 0.4470 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.4370 INCHES MINIMUM AND 0.4385 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 3120 — Bearings, Plain, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3120-00-001-1288 3120-00-001-1835 3120-00-001-1838 3120-00-001-1928 3120-00-001-1934 3120-00-001-3933 3120-00-001-3937 3120-00-001-3938
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 NAS74?
NAS74 is a BEARING,PLAIN,SELF-ALIGNING.
What is the NSN for NAS74?
NAS74 is cataloged in the U.S. Government catalog under NSN 3120-00-045-4944. 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.