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41UT4103-4PC90 — Technical Data Sheet

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— · 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 WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, hole_diameter: 0.763 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN, outside_diameter: 1.312 INCHES NOMINAL IN, style_designator: SPLIT HELICAL-RIGHT HAND, material_thickness: 0.187 INCHES NOMINAL IN, material_document_and_classification: QQ-S-763,TY C FED SPEC SINGLE MATERIAL RESPONSE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5310-00-262-3491, 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
41UT4103-4PC90
NSN: 5310-00-262-3491
FSC: 5310
CAGE: 81340 — UNITED STATES COAST GUARD DBA U.S.C.G. SFLC DIV SURFACE FORCES LOGISTICS CENTER (SFLC) (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
hole_diameter0.763 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN
outside_diameter1.312 INCHES NOMINAL IN
style_designatorSPLIT HELICAL-RIGHT HAND
material_thickness0.187 INCHES NOMINAL IN
material_document_and_classificationQQ-S-763,TY C FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-262-3491
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 41UT4103-4PC90 · 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
•
OUTSIDE DIAMETER: 1.312 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 304 OVERALL
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
HOLE DIAMETER: 0.763 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.187 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,TY C FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER1.312 INCHES NOMINAL IN
MATERIALSTEEL COMP 304 OVERALL
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
HOLE DIAMETER0.763 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN
MATERIAL THICKNESS0.187 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,TY C FED SPEC SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
345894PC203InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
158255PC46InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
FFW84CLASSCInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
345894PC204InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
414908PC20InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
NAS1676C416InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 41UT4103-4PC90?
41UT4103-4PC90 is a WASHER,LOCK.
What parts can replace 41UT4103-4PC90?
There are 12 known substitutes for 41UT4103-4PC90: 345894PC203, 158255PC46, FFW84CLASSC and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 41UT4103-4PC90?
41UT4103-4PC90 is cataloged in the Federal Logistics Information System under NSN 5310-00-262-3491. This indicates validated use in U.S. government and defense supply chains.
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Last verified: October 2026