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PartsTable / COMPONENT / 005571
005571 ✓ 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 NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.281 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNS, locking_feature: FREE-RUNNING ALL METAL DESIGN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-384-8118, 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
005571
NSN: 5310-00-384-8118
FSC: 5310
CAGE: 78640 — MITSUBISHI CATERPILLAR FORKLIFT AMERICA, INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.281 INCHES NOMINAL IN
thread_class3B
thread_seriesUNS
locking_featureFREE-RUNNING ALL METAL DESIGN
thread_directionRIGHT-HAND
width_across_flats1.250 INCHES NOMINAL IN
nominal_thread_size0.875 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch18
NSN5310-00-384-8118
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 005571 · 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: 18
•
NOMINAL THREAD SIZE: 0.875 INCHES IN
•
BEARING SURFACE TYPE: CHAMFERED
•
THREAD SERIES: UNS
•
LOCKING FEATURE: FREE-RUNNING ALL METAL DESIGN
•
NUT STYLE: HEXAGON
•
MATERIAL: STEEL OVERALL
•
WIDTH ACROSS FLATS: 1.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH18
NOMINAL THREAD SIZE0.875 INCHES IN
BEARING SURFACE TYPECHAMFERED
THREAD SERIESUNS
LOCKING FEATUREFREE-RUNNING ALL METAL DESIGN
NUT STYLEHEXAGON
MATERIALSTEEL OVERALL
WIDTH ACROSS FLATS1.250 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
NUT HEIGHT0.281 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
G3295-3Interchangeable
interchangeable cross-reference
interchangeable
SCC22538Interchangeable
interchangeable cross-reference
interchangeable
D161769Interchangeable
interchangeable cross-reference
interchangeable
5571Interchangeable
interchangeable cross-reference
interchangeable
5246L02Interchangeable
interchangeable cross-reference
interchangeable
524C-H20Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 005571?
005571 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 005571?
There are 10 known substitutes for 005571: G3295-3, SCC22538, D161769 and 7 more. Substitute compatibility should be verified for your specific system.
Is 005571 still available?
005571 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