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Technical Data Sheet
PartsTable / COMPONENT / 1665-26-5
1665-26-5 ✓ 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,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1020 OVERALL, first_end_style: CHAMFERED, pin_overall_length: 5.438 INCHES NOMINAL IN, first_hole_diameter: 0.172 INCHES NOMINAL IN, pin_overall_diameter: 0.6880 INCHES NOMINAL IN, second_hole_diameter: 0.172 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 5315-00-252-2977, 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
1665-26-5
NSN: 5315-00-252-2977
FSC: 5315
CAGE: 20076 — TITAN WHEEL CORPORATION OF ILLINOIS (USA)
SPECIFICATIONS
materialSTEEL COMP 1020 OVERALL
first_end_styleCHAMFERED
pin_overall_length5.438 INCHES NOMINAL IN
first_hole_diameter0.172 INCHES NOMINAL IN
pin_overall_diameter0.6880 INCHES NOMINAL IN
second_hole_diameter0.172 INCHES NOMINAL IN
first_end_taper_angle45.0 DEGREES NOMINAL
first_end_taper_length0.062 INCHES NOMINAL IN
hole_arrangement_styleBOTH END DRILLED
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
second_end_relationship_with_first_endIDENTICAL
center_to_center_distance_between_holes4.938 INCHES NOMINAL IN
NSN5315-00-252-2977
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1665-26-5 · 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
•
DISTANCE FROM CENTERLINE OF HOLE TO END OF PIN: 0.250 INCHES NOMINAL IN
•
FIRST HOLE DIAMETER: 0.172 INCHES NOMINAL IN
•
FIRST END TAPER ANGLE: 45.0 DEGREES NOMINAL
•
HOLE ARRANGEMENT STYLE: BOTH END DRILLED
•
SECOND HOLE DIAMETER: 0.172 INCHES NOMINAL IN
•
FIRST END STYLE: CHAMFERED
•
PIN OVERALL DIAMETER: 0.6880 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
DISTANCE FROM CENTERLINE OF HOLE TO END OF PIN0.250 INCHES NOMINAL IN
FIRST HOLE DIAMETER0.172 INCHES NOMINAL IN
FIRST END TAPER ANGLE45.0 DEGREES NOMINAL
HOLE ARRANGEMENT STYLEBOTH END DRILLED
SECOND HOLE DIAMETER0.172 INCHES NOMINAL IN
FIRST END STYLECHAMFERED
PIN OVERALL DIAMETER0.6880 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
CENTER TO CENTER DISTANCE BETWEEN HOLES4.938 INCHES NOMINAL IN
MATERIALSTEEL COMP 1020 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
T103Interchangeable
interchangeable cross-reference
interchangeable
CTS-212-T3Interchangeable
interchangeable cross-reference
interchangeable
T3Interchangeable
interchangeable cross-reference
interchangeable
AP1353-15REVBInterchangeable
interchangeable cross-reference
interchangeable
2635-105-08-1-64Interchangeable
interchangeable cross-reference
interchangeable
990B056053Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1665-26-5?
1665-26-5 is a PIN,STRAIGHT,HEADLESS.
What parts can replace 1665-26-5?
There are 16 known substitutes for 1665-26-5: T103, CTS-212-T3, T3 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1665-26-5?
1665-26-5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-252-2977. 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