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Technical Data Sheet
PartsTable / COMPONENT / 21343E
21343E ✓ 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, surface_finish: 10.0 MICROINCHES OUTSIDE DIAMETER, first_end_style: SQUARE, surface_treatment: PASSIVATE OVERALL, pin_overall_length: 1.000 INCHES NOMINAL IN, pin_overall_diameter: 0.0624 INCHES MINIMUM AND 0.0626 INCHES MAXIMUM 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 5315-01-098-9433, 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
21343E
NSN: 5315-01-098-9433
FSC: 5315
CAGE: 30377 — SMITHS AEROSPACE, INC., ELECTRONIC SYSTEMS-GRAND RAPIDS (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
surface_finish10.0 MICROINCHES OUTSIDE DIAMETER
first_end_styleSQUARE
surface_treatmentPASSIVATE OVERALL
pin_overall_length1.000 INCHES NOMINAL IN
pin_overall_diameter0.0624 INCHES MINIMUM AND 0.0626 INCHES MAXIMUM IN
specification/standard_data30377-21343E MANUFACTURERS SPECIFICATION CONTROL
material_document_and_classificationASTM A581 COND B ASSN STD 1ST MATERIAL RESPONSE OR ASTM A582 COND A ASSN STD 2ND MATERIAL RESPONSE OVERALL
second_end_relationship_with_first_endIDENTICAL
surface_treatment_document_and_classificationQQ-P-35 TY II FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5315-01-098-9433
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 21343E · 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: 1.000 INCHES NOMINAL IN
•
SPECIFICATION/STANDARD DATA: 30377-21343E MANUFACTURERS SPECIFICATION CONTROL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 TY II FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 303 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A581 COND B ASSN STD 1ST MATERIAL RESPONSE OR ASTM A582 COND A ASSN STD 2ND MATERIAL RESPONSE OVERALL
•
FIRST END STYLE: SQUARE
•
PIN OVERALL DIAMETER: 0.0624 INCHES MINIMUM AND 0.0626 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
PIN OVERALL LENGTH1.000 INCHES NOMINAL IN
SPECIFICATION/STANDARD DATA30377-21343E MANUFACTURERS SPECIFICATION CONTROL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 TY II FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 303 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A581 COND B ASSN STD 1ST MATERIAL RESPONSE OR ASTM A582 COND A ASSN STD 2ND MATERIAL RESPONSE OVERALL
FIRST END STYLESQUARE
PIN OVERALL DIAMETER0.0624 INCHES MINIMUM AND 0.0626 INCHES MAXIMUM IN
SURFACE FINISH10.0 MICROINCHES OUTSIDE DIAMETER
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
MS19059-2422Interchangeable
interchangeable cross-reference
interchangeable
A9314Interchangeable
interchangeable cross-reference
interchangeable
H-28450 PIECE 1Interchangeable
interchangeable cross-reference
interchangeable
21343Interchangeable
interchangeable cross-reference
interchangeable
506.3750Interchangeable
interchangeable cross-reference
interchangeable
GGG-R-180Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21343E?
21343E is a PIN,STRAIGHT,HEADLESS.
What parts can replace 21343E?
There are 17 known substitutes for 21343E: MS19059-2422, A9314, H-28450 PIECE 1 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21343E?
21343E is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-098-9433. 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