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PartsTable / COMPONENT / 39-1426-001
39-1426-001 ✓ 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 PIN,SHOULDER,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, shank_length: 0.781 INCHES NOMINAL IN, overall_length: 1.000 INCHES NOMINAL IN, shank_diameter: 0.2490 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN, surface_finish: 32.000 MICROINCHES OUTSIDE DIAMETER, first_end_style: CHAMFERED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-676-8044, 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
39-1426-001
NSN: 5315-00-676-8044
FSC: 5315
CAGE: 55180 — ALLIANT DEFENSE ELECTRONICS SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
shank_length0.781 INCHES NOMINAL IN
overall_length1.000 INCHES NOMINAL IN
shank_diameter0.2490 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
surface_finish32.000 MICROINCHES OUTSIDE DIAMETER
first_end_styleCHAMFERED
second_end_styleSQUARE
special_featuresPOINTED END ROUNDED TO 0.030 IN. RADIUS IN
style_designatorSHOULDER
shoulder_diameter0.938 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
first_end_locationSHANK END
NSN5315-00-676-8044
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 39-1426-001 · 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
•
SECOND SHANK DIAMETER: 0.2490 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SECOND SHANK LENGTH: 0.125 INCHES NOMINAL IN
•
SURFACE FINISH: 32.000 MICROINCHES OUTSIDE DIAMETER
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
STYLE DESIGNATOR: SHOULDER
TECHNICAL CHARACTERISTICS (FLIS)
SECOND SHANK DIAMETER0.2490 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
MATERIALSTEEL CORROSION RESISTING OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SECOND SHANK LENGTH0.125 INCHES NOMINAL IN
SURFACE FINISH32.000 MICROINCHES OUTSIDE DIAMETER
SURFACE TREATMENTPASSIVATE OVERALL
STYLE DESIGNATORSHOULDER
SPECIAL FEATURESPOINTED END ROUNDED TO 0.030 IN. RADIUS IN
SHANK DIAMETER0.2490 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
FIRST END TAPER ANGLE60.0 DEGREES NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
LST1S4200-253069PC151Interchangeable
interchangeable cross-reference
interchangeable
3372934Interchangeable
interchangeable cross-reference
interchangeable
LST511S4200-255499PC151Interchangeable
interchangeable cross-reference
interchangeable
7207Interchangeable
interchangeable cross-reference
interchangeable
OL-3010Interchangeable
interchangeable cross-reference
interchangeable
BA98203-19Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 39-1426-001?
39-1426-001 is a PIN,SHOULDER,HEADLESS.
What parts can replace 39-1426-001?
There are 18 known substitutes for 39-1426-001: LST1S4200-253069PC151, 3372934, LST511S4200-255499PC151 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 39-1426-001?
39-1426-001 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-676-8044. 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