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501558 — RECTIFIER,METALLIC

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

501558: RECTIFIER,METALLIC.

The RECTIFIER,METALLIC is a the manufacturer industrial component. Key specifications include material: SELENIUM, nut_style: PLATE, nut_height: 0.357 INCHES MAXIMUM IN, nut_length: 1.292 INCHES MAXIMUM IN, plate_width: 0.516 INCHES MAXIMUM IN, thread_class: 3B. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-022-0064, 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
501558
NSN: 5310-00-022-0064
NIINs: 000220064, 003430887, 004534813, 012808536
FSC: 5310 — Nuts and Washers
CAGE: 23705 — FRUEHAUF CORP (USA)
SPECIFICATIONS
materialSELENIUM
nut_stylePLATE
nut_height0.357 INCHES MAXIMUM IN
nut_length1.292 INCHES MAXIMUM IN
plate_width0.516 INCHES MAXIMUM IN
thread_class3B
overall_width3.000 INCHES NOMINAL IN
terminal_typeSOLDER LUG
thread_seriesUNF
overall_height2.688 INCHES NOMINAL IN
overall_length3.000 INCHES NOMINAL IN
stack_quantity1
NSN5310-00-022-0064
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 501558 · 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
•
WIDTH ACROSS FLATS: 0.437 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
NONDEFINITIVE SPEC/STD DATA: A TYPE
•
NUT HEIGHT: 0.203 INCHES NOMINAL IN
•
NUT STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.437 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.250 INCHES IN
NONDEFINITIVE SPEC/STD DATAA TYPE
NUT HEIGHT0.203 INCHES NOMINAL IN
NUT STYLEHEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH20
SUBSTITUTES & CROSS-REFERENCES 6
FFB571TYPEAReference document
Same NSN cross-reference
Reference document — Identification reference
5310-022-0064Reference document
Same NSN cross-reference
Reference document — Informative reference only
220064Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
2075Reference document
Same NSN cross-reference
Reference document — Secondary reference
NU202Reference document
Same NSN cross-reference
Reference document — Secondary reference
P1174Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 501558?
501558 is a RECTIFIER,METALLIC.
What parts can replace 501558?
There are 6 known substitutes for 501558: FFB571TYPEA, 5310-022-0064, 220064 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 501558?
501558 is cataloged in the U.S. Government catalog under NSN 5310-00-022-0064. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.