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PartsTable / COMPONENT / 4541-1A
4541-1A ✓ 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,GROOVED,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP B1112 OR STEEL COMP B1113 OVERALL, overall_length: 0.250 INCHES NOMINAL IN, first_end_style: OVAL, style_designator: FULL LENGTH GROOVE, surface_treatment: ZINC OVERALL, first_end_location: BOTH ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-231-5564, 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
4541-1A
NSN: 5315-00-231-5564
FSC: 5315
CAGE: 64959 — AMERICAN TELEPHONE AND TELEGRAPH CO (USA)
SPECIFICATIONS
materialSTEEL COMP B1112 OR STEEL COMP B1113 OVERALL
overall_length0.250 INCHES NOMINAL IN
first_end_styleOVAL
style_designatorFULL LENGTH GROOVE
surface_treatmentZINC OVERALL
first_end_locationBOTH ENDS
pin_large_end_diameter0.067 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
pin_small_end_diameter0.061 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
material_document_and_classificationQQ-S-633 FED SPEC ALL MATERIAL RESPONSES OVERALL
second_end_relationship_with_first_endIDENTICAL
NSN5315-00-231-5564
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4541-1A · 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
•
FIRST END LOCATION: BOTH ENDS
•
FIRST END STYLE: OVAL
•
PIN LARGE END DIAMETER: 0.067 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
PIN SMALL END DIAMETER: 0.061 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633 FED SPEC ALL MATERIAL RESPONSES OVERALL
•
MATERIAL: STEEL COMP B1112 OR STEEL COMP B1113 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.250 INCHES NOMINAL IN
FIRST END LOCATIONBOTH ENDS
FIRST END STYLEOVAL
PIN LARGE END DIAMETER0.067 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
PIN SMALL END DIAMETER0.061 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633 FED SPEC ALL MATERIAL RESPONSES OVERALL
MATERIALSTEEL COMP B1112 OR STEEL COMP B1113 OVERALL
STYLE DESIGNATORFULL LENGTH GROOVE
SURFACE TREATMENTZINC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
43300324VInterchangeable
interchangeable cross-reference
interchangeable
LI10-50Interchangeable
interchangeable cross-reference
interchangeable
4541Interchangeable
interchangeable cross-reference
interchangeable
8296Interchangeable
interchangeable cross-reference
interchangeable
15619REV2Interchangeable
interchangeable cross-reference
interchangeable
UG21CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4541-1A?
4541-1A is a PIN,GROOVED,HEADLESS.
What parts can replace 4541-1A?
There are 20 known substitutes for 4541-1A: 43300324V, LI10-50, 4541 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4541-1A?
4541-1A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-231-5564. 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