PartsTable
Technical Data Sheet
Download PDF

2N4378 — SEMICONDUCTOR DEVICE,THYRISTOR

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2N4378: SEMICONDUCTOR DEVICE,THYRISTOR.

The SEMICONDUCTOR DEVICE,THYRISTOR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.328 INCHES NOMINAL IN, overall_length: 2.637 INCHES MAXIMUM IN, mounting_method: THREADED STUD(S), shoulder_height: 0.094 INCHES NOMINAL IN, outside_diameter: 0.690 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-083-7402, 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
2N4378
NSN: 5310-00-083-7402
NIINs: 000837402, 012706150
FSC: 5310 — Nuts and Washers
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.328 INCHES NOMINAL IN
overall_length2.637 INCHES MAXIMUM IN
mounting_methodTHREADED STUD(S)
shoulder_height0.094 INCHES NOMINAL IN
outside_diameter0.690 INCHES NOMINAL IN
special_featuresJUNCTION PATTERN ARRANGEMENT: PNPN
style_designatorSHOULDERED
shoulder_diameter0.500 INCHES NOMINAL IN
material_thickness0.109 INCHES NOMINAL IN
nominal_thread_size0.500 INCHES IN
internal_configurationJUNCTION CONTACT
NSN5310-00-083-7402
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2N4378 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SHOULDER HEIGHT: 0.094 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SHOULDERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: 1E303,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.690 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.109 INCHES NOMINAL IN
•
SHOULDER DIAMETER: 0.500 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.328 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SHOULDER HEIGHT0.094 INCHES NOMINAL IN
STYLE DESIGNATORSHOULDERED
MATERIAL DOCUMENT AND CLASSIFICATION1E303,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.690 INCHES NOMINAL IN
MATERIAL THICKNESS0.109 INCHES NOMINAL IN
SHOULDER DIAMETER0.500 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
HOLE DIAMETER0.328 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 2N4378?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 2N4378?
2N4378 is a SEMICONDUCTOR DEVICE,THYRISTOR.
What is the NSN for 2N4378?
2N4378 is cataloged in the U.S. Government catalog under NSN 5310-00-083-7402. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 2N4378

✓ 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.