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Technical Data Sheet
PartsTable / COMPONENT / 20220-4
20220-4 ✓ 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 PULLEY,GROOVE is a the manufacturer industrial component. Key specifications include height: 4.000 FEET NOMINAL FT, material: GLASS FIBER, surface_type: PLAIN, crosspiece_type: STEP. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-371-4114, 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
20220-4
NSN: 5310-00-371-4114
FSC: 5310
CAGE: 00006 — ACF-BRILL MOTORS CO
SPECIFICATIONS
height4.000 FEET NOMINAL FT
materialGLASS FIBER
surface_typePLAIN
crosspiece_typeSTEP
NSN5310-00-371-4114
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 20220-4 · 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 SERIES: UN
•
BEARING SURFACE TYPE: CHAMFERED
•
THREAD QUANTITY PER INCH: 12
•
NOMINAL THREAD SIZE: 3.000 INCHES IN
•
WIDTH ACROSS FLATS: 4.365 INCHES MINIMUM AND 4.385 INCHES MAXIMUM IN
•
THREAD CLASS: 3B
•
NUT HEIGHT: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIESUN
BEARING SURFACE TYPECHAMFERED
THREAD QUANTITY PER INCH12
NOMINAL THREAD SIZE3.000 INCHES IN
WIDTH ACROSS FLATS4.365 INCHES MINIMUM AND 4.385 INCHES MAXIMUM IN
THREAD CLASS3B
NUT HEIGHT0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NUT STYLECASTELLATED, OCTAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
20220-4Interchangeable
interchangeable cross-reference
interchangeable
MS20220-4Interchangeable
interchangeable cross-reference
interchangeable
81-1001-28Interchangeable
interchangeable cross-reference
interchangeable
605I5RInterchangeable
Same NIIN cross-reference
interchangeable
6051SRInterchangeable
Same NIIN cross-reference
interchangeable
AT5370Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20220-4?
20220-4 is a PULLEY,GROOVE.
What parts can replace 20220-4?
There are 6 known substitutes for 20220-4: 20220-4, MS20220-4, 81-1001-28 and 3 more. Substitute compatibility should be verified for your specific system.
Is 20220-4 still available?
20220-4 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