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56788 — MODULATOR ASSEMBLY,IGNITION

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

56788: MODULATOR ASSEMBLY,IGNITION.

The MODULATOR ASSEMBLY,IGNITION is a the manufacturer industrial component. Key specifications include diameter: 2.4390 INCHES MINIMUM AND 2.4420 INCHES MAXIMUM IN, material: COPPER ALLOY 937 OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 28.20 MILLIMETERS NOMINAL MM, surface_finish: 100.0 MICROINCHES OVERALL, outside_diameter: 2.9200 INCHES MINIMUM AND 2.9400 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-662-3676, 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→ 56788
NSN: 3120-00-662-3676
NIINs: 006623676, 014488682, 015483809, 016848816, 016911289
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 70210 — HONEYWELL INTERNATIONAL INC. DIV AEROSPACE - TORRANCE (USA)
SPECIFICATIONS
diameter2.4390 INCHES MINIMUM AND 2.4420 INCHES MAXIMUM IN
materialCOPPER ALLOY 937 OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length28.20 MILLIMETERS NOMINAL MM
surface_finish100.0 MICROINCHES OVERALL
outside_diameter2.9200 INCHES MINIMUM AND 2.9400 INCHES MAXIMUM IN
overall_diameter33.50 MILLIMETERS MAXIMUM MM
special_featuresLOCKABLE MANUAL FOCUS AND APERTURE CONTROL
style_designatorROUND
lens_focal_length16.0 MILLIMETERS NOMINAL MM
overall_thickness0.0930 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM IN
base_mounting_typeC
NSN3120-00-662-3676
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 56788 · 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
•
SURFACE FINISH: 100.0 MICROINCHES OVERALL
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BEARING SURFACE HOLE DIAMETER: 0.0970 INCHES MINIMUM AND 0.1010 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
•
OVERALL THICKNESS: 0.0930 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
DIAMETER: 2.4390 INCHES MINIMUM AND 2.4420 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS
SURFACE FINISH100.0 MICROINCHES OVERALL
CORNER SHAPESQUARE ALL CORNERS
BEARING SURFACE HOLE DIAMETER0.0970 INCHES MINIMUM AND 0.1010 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
OVERALL THICKNESS0.0930 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM IN
STYLE DESIGNATORROUND
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
DIAMETER2.4390 INCHES MINIMUM AND 2.4420 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER2.9200 INCHES MINIMUM AND 2.9400 INCHES MAXIMUM IN
LUBRICATION FEATUREPERFORATION FLAT BEARING SURFACE
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 56788?
56788 is a MODULATOR ASSEMBLY,IGNITION. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 56788?
56788 is cataloged in the U.S. Government catalog under NSN 3120-00-662-3676. 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.