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PartsTable / COMPONENT / B6344
B6344 ✓ 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 KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_width: 0.255 INCHES MINIMUM AND 0.2575 INCHES MAXIMUM IN, overall_height: 0.255 INCHES MINIMUM AND 0.2575 INCHES MAXIMUM IN, overall_length: 1.493 INCHES MINIMUM AND 1.507 INCHES MAXIMUM IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL, style_designator: PLAIN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-269-7105, 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
B6344
NSN: 5315-00-269-7105
FSC: 5315
CAGE: 62983 — EATON AEROSPACE, LLC DBA JACKSON SOUTH (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.255 INCHES MINIMUM AND 0.2575 INCHES MAXIMUM IN
overall_height0.255 INCHES MINIMUM AND 0.2575 INCHES MAXIMUM IN
overall_length1.493 INCHES MINIMUM AND 1.507 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
style_designatorPLAIN
starting_edge_shapeSTRAIGHT
material_document_and_classificationQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-269-7105
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: B6344 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL: STEEL OVERALL
•
STARTING EDGE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL HEIGHT0.255 INCHES MINIMUM AND 0.2575 INCHES MAXIMUM IN
OVERALL LENGTH1.493 INCHES MINIMUM AND 1.507 INCHES MAXIMUM IN
OVERALL WIDTH0.255 INCHES MINIMUM AND 0.2575 INCHES MAXIMUM IN
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORPLAIN
MATERIALSTEEL OVERALL
STARTING EDGE SHAPESTRAIGHT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
6-3-44Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-2692Interchangeable
interchangeable cross-reference
interchangeable
412-13Interchangeable
interchangeable cross-reference
interchangeable
AFSN31824-1-4Interchangeable
interchangeable cross-reference
interchangeable
A12650PT13Interchangeable
interchangeable cross-reference
interchangeable
838884Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B6344?
B6344 is a KEY,MACHINE.
What parts can replace B6344?
There are 10 known substitutes for B6344: 6-3-44, MIL-F-2692, 412-13 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B6344?
B6344 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-269-7105. 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