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6HA197 ✓ 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 WASHER,LOCK is a the manufacturer industrial component. Key specifications include color: BLACK OVERALL, material: STEEL COMP 1050 OVERALL, hole_diameter: 0.472 INCHES MINIMUM AND 0.480 INCHES MAXIMUM IN, outside_diameter: 0.593 INCHES MINIMUM AND 0.607 INCHES MAXIMUM IN, special_features: 18-24 TEETH, style_designator: FLAT INTERNAL TEETH. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-642-8210, 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
6HA197
NSN: 5310-01-642-8210
FSC: 5310
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
colorBLACK OVERALL
materialSTEEL COMP 1050 OVERALL
hole_diameter0.472 INCHES MINIMUM AND 0.480 INCHES MAXIMUM IN
outside_diameter0.593 INCHES MINIMUM AND 0.607 INCHES MAXIMUM IN
special_features18-24 TEETH
style_designatorFLAT INTERNAL TEETH
surface_treatmentZINC OVERALL
material_thickness0.013 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
end_item_identification2320-01-534-1887
part_name_assigned_by_controlling_agencyWASHER,LOCK
NSN5310-01-642-8210
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6HA197 · 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 THICKNESS: 0.013 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.472 INCHES MINIMUM AND 0.480 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.593 INCHES MINIMUM AND 0.607 INCHES MAXIMUM IN
•
SURFACE TREATMENT: ZINC OVERALL
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATION2320-01-534-1887
MATERIAL THICKNESS0.013 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER,LOCK
HOLE DIAMETER0.472 INCHES MINIMUM AND 0.480 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.593 INCHES MINIMUM AND 0.607 INCHES MAXIMUM IN
SPECIAL FEATURES18-24 TEETH
SURFACE TREATMENTZINC OVERALL
STYLE DESIGNATORFLAT INTERNAL TEETH
COLORBLACK OVERALL
MATERIALSTEEL COMP 1050 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
7961Interchangeable
interchangeable cross-reference
interchangeable
W2250CInterchangeable
interchangeable cross-reference
interchangeable
W2250Interchangeable
interchangeable cross-reference
interchangeable
68137Interchangeable
interchangeable cross-reference
interchangeable
108114GP1Interchangeable
interchangeable cross-reference
interchangeable
117676-000Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6HA197?
6HA197 is a WASHER,LOCK.
What parts can replace 6HA197?
There are 10 known substitutes for 6HA197: 7961, W2250C, W2250 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6HA197?
6HA197 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-642-8210. 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