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FF307 — RESISTOR,FIXED,WIRE WOUND,INDUCT

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

FF307: RESISTOR,FIXED,WIRE WOUND,INDUCT.

RESISTOR,FIXED,WIRE WOUND,INDUCT. Key specifications include material: OIL LUBRICATING LUBRICATION, corner_shape: SQUARE INSIDE RIGHT CORNER, flange_width: 0.0625 INCHES NOMINAL IN, overall_length: 0.3750 INCHES NOMINAL IN, style_designator: SOLID, EXTERNAL FLANGE ONE END, body_inside_diameter: 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-580-3245, 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
FF307
NSN: 3120-00-580-3245
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 70901 — BEEMER PRECISION INC (USA)
SPECIFICATIONS
materialOIL LUBRICATING LUBRICATION
corner_shapeSQUARE INSIDE RIGHT CORNER
flange_width0.0625 INCHES NOMINAL IN
overall_length0.3750 INCHES NOMINAL IN
style_designatorSOLID, EXTERNAL FLANGE ONE END
body_inside_diameter0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN
body_outside_diameter0.3755 INCHES MINIMUM AND 0.3765 INCHES MAXIMUM IN
flange_outside_diameter0.4365 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN
material_document_and_classificationMIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-580-3245
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: FF307 · 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
•
FLANGE OUTSIDE DIAMETER: 0.4365 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 0.3755 INCHES MINIMUM AND 0.3765 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE INSIDE RIGHT CORNER
CORNER SHAPESQUARE LEFT FLANGE BODY CORNER
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
CORNER SHAPESQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE INSIDE LEFT CORNER
FLANGE OUTSIDE DIAMETER0.4365 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.3755 INCHES MINIMUM AND 0.3765 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, EXTERNAL FLANGE ONE END
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
SUBSTITUTES & CROSS-REFERENCES 3
W305466-127Reference document
Same NSN cross-reference
Reference document — Secondary reference
2230051PC2Reference document
Same NSN cross-reference
Reference document — Secondary reference
F307Reference 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 FF307?
FF307 is a RESISTOR,FIXED,WIRE WOUND,INDUCT.
What parts can replace FF307?
There are 3 known substitutes for FF307: W305466-127, 2230051PC2, F307. Substitute compatibility should be verified for your specific system.
What is the NSN for FF307?
FF307 is cataloged in the U.S. Government catalog under NSN 3120-00-580-3245. 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.