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PartsTable / COMPONENT / 126-74-9
126-74-9 ✓ 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 CONNECTOR,PLUG,ELECTRICAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, first_end_style: SQUARE, terminal_location: FRONT SINGLE MATING END ALL CONTACT GROUPINGS, pin_overall_length: 0.938 INCHES NOMINAL IN, pin_overall_diameter: 0.1870 INCHES NOMINAL IN, end_item_identification: E-3IDG. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-521-4685, 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
126-74-9
NSN: 5315-00-521-4685
FSC: 5315
CAGE: 08683 — BROCKWAY MOTOR TRUCKS DIV OF MACK TRUCKS INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
first_end_styleSQUARE
terminal_locationFRONT SINGLE MATING END ALL CONTACT GROUPINGS
pin_overall_length0.938 INCHES NOMINAL IN
mating_end_quantity1
pin_overall_diameter0.1870 INCHES NOMINAL IN
end_item_identificationE-3IDG
second_end_relationship_with_first_endIDENTICAL
NSN5315-00-521-4685
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 126-74-9 · 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
•
PIN OVERALL LENGTH: 0.938 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
FIRST END STYLE: SQUARE
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
PIN OVERALL DIAMETER: 0.1870 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
PIN OVERALL LENGTH0.938 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
FIRST END STYLESQUARE
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
PIN OVERALL DIAMETER0.1870 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
38271-1212SM-1Interchangeable
interchangeable cross-reference
interchangeable
SM-C-583573Interchangeable
interchangeable cross-reference
interchangeable
263821-A1Interchangeable
interchangeable cross-reference
interchangeable
SMA753348Interchangeable
interchangeable cross-reference
interchangeable
PA117Interchangeable
interchangeable cross-reference
interchangeable
10670334Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 126-74-9?
126-74-9 is a CONNECTOR,PLUG,ELECTRICAL.
What parts can replace 126-74-9?
There are 18 known substitutes for 126-74-9: 38271-1212SM-1, SM-C-583573, 263821-A1 and 15 more. Substitute compatibility should be verified for your specific system.
Is 126-74-9 still available?
126-74-9 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026