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Technical Data Sheet
PartsTable / COMPONENT / 003170
003170 ✓ 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,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, hole_diameter: 0.750 INCHES NOMINAL IN, outside_diameter: 1.109 INCHES NOMINAL IN, special_features: FLATTED CENTER HOLE 0.546 IN. W IN, style_designator: KEY, surface_treatment: PASSIVATE OVERALL.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-440-3504, 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
003170
NSN: 5310-00-440-3504
FSC: 5310
CAGE: 34228 — L3 TECHNOLOGIES, INC. DIV L3 KEO (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
hole_diameter0.750 INCHES NOMINAL IN
outside_diameter1.109 INCHES NOMINAL IN
special_featuresFLATTED CENTER HOLE 0.546 IN. W IN
style_designatorKEY
surface_treatmentPASSIVATE OVERALL
material_thickness0.038 INCHES NOMINAL IN
external_key_quantity1
external_prebent_key_width0.093 INCHES NOMINAL IN
external_prebent_key_length0.078 INCHES NOMINAL IN
material_document_and_classificationASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_inside_of_prebent_key0.421 INCHES NOMINAL IN
NSN5310-00-440-3504
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 003170 · 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
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
STYLE DESIGNATOR: KEY
•
EXTERNAL KEY QUANTITY: 1
•
MATERIAL: STEEL COMP 303 OVERALL
•
OUTSIDE DIAMETER: 1.109 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.750 INCHES NOMINAL IN
•
EXTERNAL PREBENT KEY WIDTH: 0.093 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTPASSIVATE OVERALL
STYLE DESIGNATORKEY
SPECIAL FEATURESFLATTED CENTER HOLE 0.546 IN. W IN
EXTERNAL KEY QUANTITY1
MATERIALSTEEL COMP 303 OVERALL
OUTSIDE DIAMETER1.109 INCHES NOMINAL IN
HOLE DIAMETER0.750 INCHES NOMINAL IN
EXTERNAL PREBENT KEY WIDTH0.093 INCHES NOMINAL IN
EXTERNAL PREBENT KEY LENGTH0.078 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
3170Interchangeable
interchangeable cross-reference
interchangeable
FFS200Interchangeable
interchangeable cross-reference
interchangeable
3-170DInterchangeable
interchangeable cross-reference
interchangeable
326-19-03-074Interchangeable
interchangeable cross-reference
interchangeable
NFA15Interchangeable
interchangeable cross-reference
interchangeable
A015536Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 003170?
003170 is a WASHER,KEY.
What parts can replace 003170?
There are 9 known substitutes for 003170: 3170, FFS200, 3-170D and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 003170?
003170 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-440-3504. 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