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Technical Data Sheet
PartsTable / COMPONENT / US1-18
US1-18 ✓ 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 PIN,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, first_end_style: CHAMFERED, surface_treatment: PASSIVATE OVERALL, pin_overall_length: 2.250 INCHES NOMINAL IN, pin_overall_diameter: 0.1250 INCHES NOMINAL IN, first_end_taper_angle: 45.0 DEGREES NOMINAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-103-0623, 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
US1-18
NSN: 5315-00-103-0623
FSC: 5315
CAGE: 00328 — DESIGNATRONICS INCORPORATED DIV STERLING INSTRUMENTS DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
first_end_styleCHAMFERED
surface_treatmentPASSIVATE OVERALL
pin_overall_length2.250 INCHES NOMINAL IN
pin_overall_diameter0.1250 INCHES NOMINAL IN
first_end_taper_angle45.0 DEGREES NOMINAL
data_furnishing_methodCLEAR WINDOW
first_end_taper_length0.010 INCHES NOMINAL IN
end_item_identificationICE MAKING
material_document_and_classificationAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
second_end_relationship_with_first_endIDENTICAL
NSN5315-00-103-0623
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: US1-18 · 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
•
PIN OVERALL LENGTH: 2.250 INCHES NOMINAL IN
•
FIRST END STYLE: CHAMFERED
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
FIRST END TAPER LENGTH: 0.010 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
PIN OVERALL DIAMETER: 0.1250 INCHES NOMINAL IN
•
FIRST END TAPER ANGLE: 45.0 DEGREES NOMINAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
PIN OVERALL LENGTH2.250 INCHES NOMINAL IN
FIRST END STYLECHAMFERED
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
FIRST END TAPER LENGTH0.010 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
PIN OVERALL DIAMETER0.1250 INCHES NOMINAL IN
FIRST END TAPER ANGLE45.0 DEGREES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
7-14-019Interchangeable
interchangeable cross-reference
interchangeable
A422Interchangeable
interchangeable cross-reference
interchangeable
051047Interchangeable
interchangeable cross-reference
interchangeable
A42 MATCHED SET 2Interchangeable
interchangeable cross-reference
interchangeable
A42SSET2Interchangeable
interchangeable cross-reference
interchangeable
146-012-0001Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is US1-18?
US1-18 is a PIN,STRAIGHT,HEADLESS.
What parts can replace US1-18?
There are 12 known substitutes for US1-18: 7-14-019, A422, 051047 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for US1-18?
US1-18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-103-0623. 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