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PartsTable / COMPONENT / 806915
806915 ✓ 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 PROTECTOR,MASTER RO is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1008 OVERALL, nut_style: HEXAGON, nut_height: 0.250 INCHES NOMINAL IN, thread_series: UNS, thread_direction: RIGHT-HAND, surface_treatment: ZINC OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-220-6671, 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
806915
NSN: 5310-00-220-6671
FSC: 5310
CAGE: 12603 — CLARK EQUIPMENT CO (USA)
SPECIFICATIONS
materialSTEEL COMP 1008 OVERALL
nut_styleHEXAGON
nut_height0.250 INCHES NOMINAL IN
thread_seriesUNS
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_across_flats0.937 INCHES NOMINAL IN
nominal_thread_size0.669 INCHES IN
bearing_surface_typeCHAMFERED
thread_pitch_diameters+0.6365 TO 0.6406 INCHES IN
thread_quantity_per_inch20
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-220-6671
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 806915 · 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
•
THREAD QUANTITY PER INCH: 20
•
NOMINAL THREAD SIZE: 0.669 INCHES IN
•
THREAD SERIES: UNS
•
BEARING SURFACE TYPE: CHAMFERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NUT HEIGHT: 0.250 INCHES NOMINAL IN
•
SURFACE TREATMENT: ZINC OVERALL
•
MATERIAL: STEEL COMP 1008 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH20
NOMINAL THREAD SIZE0.669 INCHES IN
THREAD SERIESUNS
BEARING SURFACE TYPECHAMFERED
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NUT HEIGHT0.250 INCHES NOMINAL IN
SURFACE TREATMENTZINC OVERALL
MATERIALSTEEL COMP 1008 OVERALL
THREAD DIRECTIONRIGHT-HAND
NUT STYLEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
23060Interchangeable
interchangeable cross-reference
interchangeable
504C-4Interchangeable
interchangeable cross-reference
interchangeable
ER4-1Interchangeable
interchangeable cross-reference
interchangeable
RB20-14Interchangeable
interchangeable cross-reference
interchangeable
55580Interchangeable
interchangeable cross-reference
interchangeable
955580Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 806915?
806915 is a PROTECTOR,MASTER RO.
What parts can replace 806915?
There are 25 known substitutes for 806915: 23060, 504C-4, ER4-1 and 22 more. Substitute compatibility should be verified for your specific system.
Is 806915 still available?
806915 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026