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Technical Data Sheet
PartsTable / MRO / 520-021
520-021 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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

RESISTOR,VARIABLE,NONWIRE WOUND,. Key specifications include material: STEEL CORROSION RESISTING ACTUATING ELEMENT, dial_size: 2.022 IN. MIN AND 2.037 IN.

MAX DIA IN, bezel_type: SNAP-ON, body_style: CYLINDRICAL BUSHING MOUNTED, scale_name: OIL PRESSURE, scale_type: SINGLE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-017-9228, 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
MRO→ MRO_GENERAL→ 520-021
NSN: 5315-00-017-9228
FSC: 5315
CAGE: 1FP59 — IKON SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING ACTUATING ELEMENT
dial_size2.022 IN. MIN AND 2.037 IN. MAX DIA IN
bezel_typeSNAP-ON
body_styleCYLINDRICAL BUSHING MOUNTED
scale_nameOIL PRESSURE
scale_typeSINGLE
body_length0.453 INCHES NOMINAL IN
scale_range+0.0 TO 30.0 POUNDS PER SQUARE INCH LBS
shaft_styleROUND, SLOTTED
pointer_typeINDICATING
prong_length2.384 INCHES NOMINAL IN
shaft_length0.875 INCHES NOMINAL IN
NSN5315-00-017-9228
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 520-021 · 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
•
PRONG LENGTH: 2.384 INCHES NOMINAL IN
•
STYLE DESIGNATOR: LOCK
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL: STEEL OVERALL
•
WIRE STOCK DIAMETER: 0.178 INCHES NOMINAL IN
•
OPENING WIDTH: 1.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
PRONG LENGTH2.384 INCHES NOMINAL IN
END ITEM IDENTIFICATIONHEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS)
STYLE DESIGNATORLOCK
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL OVERALL
WIRE STOCK DIAMETER0.178 INCHES NOMINAL IN
OPENING WIDTH1.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
5166771Interchangeable
interchangeable cross-reference
interchangeable
5166773Interchangeable
interchangeable cross-reference
interchangeable
516671Interchangeable
interchangeable cross-reference
interchangeable
JA1N056S104AZInterchangeable
interchangeable cross-reference
interchangeable
52-0021Interchangeable
interchangeable cross-reference
interchangeable
044-015Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 520-021?
520-021 is a RESISTOR,VARIABLE,NONWIRE WOUND,. It is classified as a MRO (MRO_GENERAL).
What parts can replace 520-021?
There are 19 known substitutes for 520-021: 5166771, 5166773, 516671 and 16 more. Substitute compatibility should be verified for your specific system.
Is 520-021 still available?
520-021 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