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Technical Data Sheet
PartsTable / COMPONENT / 3780 18
3780 18 ✓ 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 DRILL,TWIST is a the manufacturer industrial component. Key specifications include material: STEEL ALLOY OVERALL, point_type: SPLIT, point_angle: 135.0 DEGREES NOMINAL, shank_style: STRAIGHT ROUND, flute_length: 1.062 INCHES NOMINAL IN, overall_length: 2.750 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-146-2598, 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
3780 18
NSN: 5310-00-146-2598
FSC: 5310
CAGE: 11757 — PARKER HANNIFIN CORPORATION DIV CHELSEA PRODUCTS DIVISION (USA)
SPECIFICATIONS
materialSTEEL ALLOY OVERALL
point_typeSPLIT
point_angle135.0 DEGREES NOMINAL
shank_styleSTRAIGHT ROUND
flute_length1.062 INCHES NOMINAL IN
flute_quantity2
overall_length2.750 INCHES NOMINAL IN
shank_diameter0.125 INCHES NOMINAL IN
special_featuresJOBBERS LG; SCREW MACHINE FLUTE LG; FRACTIONAL SIZE 1/8
cutting_end_styleGENERAL PURPOSE
nominal_cutting_diameter0.1695 INCHES IN
cutting_rotation_directionRIGHT-HAND
NSN5310-00-146-2598
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3780 18 · 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
•
THICKNESS: 0.047 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B152 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: COPPER OVERALL
•
HOLE DIAMETER: 0.391 INCHES NOMINAL IN
•
OVERALL DIAMETER: 0.562 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
CENTER HOLE SHAPE STYLE: ROUND
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
THICKNESS0.047 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B152 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER OVERALL
HOLE DIAMETER0.391 INCHES NOMINAL IN
OVERALL DIAMETER0.562 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
C15915Interchangeable
interchangeable cross-reference
interchangeable
15915Interchangeable
interchangeable cross-reference
interchangeable
3780 1/8Interchangeable
interchangeable cross-reference
interchangeable
3780 18Interchangeable
interchangeable cross-reference
interchangeable
NAS907 TYDInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3780 18?
3780 18 is a DRILL,TWIST.
What parts can replace 3780 18?
There are 5 known substitutes for 3780 18: C15915, 15915, 3780 1/8 and 2 more. Substitute compatibility should be verified for your specific system.
Is 3780 18 still available?
3780 18 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