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Technical Data Sheet
PartsTable / COMPONENT / 802005-004
802005-004 ✓ 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 COMP 410 OVERALL, hole_diameter: 0.115 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM, outside_diameter: 0.255 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, style_designator: FLAT INTERNAL TEETH, material_thickness: 0.015 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-550-3715, 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
802005-004
NSN: 5310-00-550-3715
FSC: 5310
CAGE: 53938 — EVANS & SUTHERLAND COMPUTER CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 410 OVERALL
hole_diameter0.115 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
outside_diameter0.255 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
style_designatorFLAT INTERNAL TEETH
material_thickness0.015 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
end_item_identificationMULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
material_document_and_classification66,STEEL NO. 410 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-550-3715
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 802005-004 · 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
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
•
MATERIAL: STEEL COMP 410 OVERALL
•
HOLE DIAMETER: 0.115 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.255 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.015 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66,STEEL NO. 410 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
END ITEM IDENTIFICATIONMULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
MATERIALSTEEL COMP 410 OVERALL
HOLE DIAMETER0.115 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.255 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
MATERIAL THICKNESS0.015 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION66,STEEL NO. 410 FED STD SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORFLAT INTERNAL TEETH
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
1003543Interchangeable
interchangeable cross-reference
interchangeable
4301Interchangeable
interchangeable cross-reference
interchangeable
122-5277671 ITEM 33Interchangeable
interchangeable cross-reference
interchangeable
9412350Interchangeable
interchangeable cross-reference
interchangeable
105210Interchangeable
interchangeable cross-reference
interchangeable
670872-101Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 802005-004?
802005-004 is a WASHER,LOCK.
What parts can replace 802005-004?
There are 30 known substitutes for 802005-004: 1003543, 4301, 122-5277671 ITEM 33 and 27 more. Substitute compatibility should be verified for your specific system.
Is 802005-004 still available?
802005-004 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026