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248-4 — RELAY,ELECTROMAGNETIC

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

248-4: RELAY,ELECTROMAGNETIC.

The RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 7075, body_width: 1.175 INCHES MAXIMUM IN, body_height: 1.000 INCHES MAXIMUM IN, body_length: 1.260 INCHES MAXIMUM IN, corner_shape: SQUARE INSIDE RIGHT CORNER, heat_treatment: T-6 SOLUTION HEAT TREATED. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-373-8750, 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
MRO→ MRO_GENERAL→ 248-4
NSN: 3120-00-373-8750
NIINs: 003738750, 003740049, 004564388, 009370422, 012075573, 013786597, 014653073, 015531105, 015623440, 016455204
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 45934 — ONTIC ENGINEERING & MANUFACTURING, INC DBA ONTIC US (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 7075
body_width1.175 INCHES MAXIMUM IN
body_height1.000 INCHES MAXIMUM IN
body_length1.260 INCHES MAXIMUM IN
corner_shapeSQUARE INSIDE RIGHT CORNER
heat_treatmentT-6 SOLUTION HEAT TREATED
inclosure_typeFULLY INCLOSED
overall_height3.094 INCHES NOMINAL IN
overall_length0.4340 INCHES MINIMUM AND 0.4380 INCHES MAXIMUM IN
inside_diameter0.781 INCHES NOMINAL IN
mounting_methodTHREADED HOLE(S) SINGLE GROUP
frequency_rating400.0 HERTZ NOMINAL SINGLE COMPONENT
NSN3120-00-373-8750
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 248-4 · 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
•
BODY OUTSIDE DIAMETER: 1.6875 INCHES MINIMUM AND 1.6880 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 0.8125 INCHES MINIMUM AND 0.8130 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE INSIDE RIGHT CORNER
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE INSIDE LEFT CORNER
CORNER SHAPECHAMFERED OUTSIDE LEFT CORNER
BODY OUTSIDE DIAMETER1.6875 INCHES MINIMUM AND 1.6880 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH0.4340 INCHES MINIMUM AND 0.4380 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.8125 INCHES MINIMUM AND 0.8130 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY OVERALL
KEYWAY DIMENSION0.2470 INCHES MINIMUM AND 0.2530 INCHES MAXIMUM EXTERNAL KEYWAY DEPTH IN
SUBSTITUTES & CROSS-REFERENCES 1
248-4EReference 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 248-4?
248-4 is a RELAY,ELECTROMAGNETIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 248-4?
There is 1 known substitute for 248-4: 248-4E. Substitute compatibility should be verified for your specific system.
What is the NSN for 248-4?
248-4 is cataloged in the U.S. Government catalog under NSN 3120-00-373-8750. This indicates validated use in U.S. government and defense supply chains.
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