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WE55 ✓ 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 material: STEEL OVERALL, hole_diameter: 0.520 INCHES NOMINAL IN, outside_diameter: 0.890 INCHES NOMINAL IN, special_features: MATERIAL: STEEL ZC, style_designator: FLAT EXTERNAL TEETH, material_thickness: 0.040 INCHES NOMINAL 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 5310-01-651-8704, 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
WE55
NSN: 5310-01-651-8704
FSC: 5310
CAGE: 0KMA3 — ADAMS NUT AND BOLT CO INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.520 INCHES NOMINAL IN
outside_diameter0.890 INCHES NOMINAL IN
special_featuresMATERIAL: STEEL ZC
style_designatorFLAT EXTERNAL TEETH
material_thickness0.040 INCHES NOMINAL IN
external_key_quantity10
end_item_identification6115-01-591-1161;GENERATOR,HEATING AND AIR CONDITIONER
part_name_assigned_by_controlling_agencyWASHER,EXT STAR
NSN5310-01-651-8704
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: WE55 · 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: 0.040 INCHES NOMINAL IN
•
EXTERNAL KEY QUANTITY: 10
•
OUTSIDE DIAMETER: 0.890 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.520 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT EXTERNAL TEETH
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.040 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY10
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER,EXT STAR
OUTSIDE DIAMETER0.890 INCHES NOMINAL IN
SPECIAL FEATURESMATERIAL: STEEL ZC
HOLE DIAMETER0.520 INCHES NOMINAL IN
END ITEM IDENTIFICATION6115-01-591-1161;GENERATOR,HEATING AND AIR CONDITIONER
STYLE DESIGNATORFLAT EXTERNAL TEETH
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
61107Interchangeable
interchangeable cross-reference
interchangeable
H61107Interchangeable
interchangeable cross-reference
interchangeable
611-7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is WE55?
WE55 is a WASHER,LOCK.
What parts can replace WE55?
There are 3 known substitutes for WE55: 61107, H61107, 611-7. Substitute compatibility should be verified for your specific system.
What is the NSN for WE55?
WE55 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-651-8704. 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