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M428 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The BACKSHELL,ELECTRICAL CONNECTOR is a the manufacturer industrial component. Key specifications include material: STEEL, design_type: SPLICING, overall_width: 17.000 INCHES NOMINAL IN, overall_height: 3.000 INCHES NOMINAL IN, overall_length: 31.000 INCHES NOMINAL IN, inside_diameter: 1.000 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-188-9448, 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
M428
NSN: 5315-00-188-9448
FSC: 5315
CAGE: 61208 — TWIN DISC, INCORPORATED DBA TWIN DISC MID-ATLANTIC (USA)
SPECIFICATIONS
materialSTEEL
design_typeSPLICING
overall_width17.000 INCHES NOMINAL IN
overall_height3.000 INCHES NOMINAL IN
overall_length31.000 INCHES NOMINAL IN
inside_diameter1.000 INCHES NOMINAL IN
special_featuresOVAL SHAPED,14 GA EXPANDED TO 0.500 IN. DIAMOND MESH;W/ 3 MTG HOLES 0.312-18 NC,0.625 IN. IN
style_designatorPLAIN
starting_edge_shapeSTRAIGHT
cable_outside_diameter0.700 INCHES NOMINAL IN
enlarged_center_featureINCLUDED
cable_type_for_which_designedROUND
NSN5315-00-188-9448
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: M428 · 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
•
MATERIAL: STEEL OVERALL
•
STARTING EDGE SHAPE: STRAIGHT
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-890,CL B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
OVERALL HEIGHT0.500 INCHES NOMINAL IN
STARTING EDGE SHAPESTRAIGHT
OVERALL LENGTH3.500 INCHES NOMINAL IN
OVERALL WIDTH0.500 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-890,CL B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
M428Interchangeable
interchangeable cross-reference
interchangeable
SCD15904AM0LDM428Interchangeable
interchangeable cross-reference
interchangeable
20620-3-000097Interchangeable
interchangeable cross-reference
interchangeable
CS-4310-0002Interchangeable
interchangeable cross-reference
interchangeable
394019PC5Interchangeable
interchangeable cross-reference
interchangeable
9975097-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M428?
M428 is a BACKSHELL,ELECTRICAL CONNECTOR.
What parts can replace M428?
There are 16 known substitutes for M428: M428, SCD15904AM0LDM428, 20620-3-000097 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M428?
M428 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-188-9448. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026