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Technical Data Sheet

R20499 — Technical Data Sheet

✓ 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,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN, thread_series: UN, thread_direction: RIGHT-HAND, surface_treatment: CADMIUM OVERALL. This part is cataloged in the Federal Logistics Information System under NSN 5310-00-282-9545, 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
R20499
NSN: 5310-00-282-9545
FSC: 5310
CAGE: 83120 — PRESSED METALS OF AMERICA INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
thread_seriesUN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats0.922 INCHES MINIMUM AND 0.953 INCHES MAXIMUM IN
nominal_thread_size0.625 INCHES IN
bearing_surface_typeFLAT
thread_pitch_diameters+0.6365 TO 0.6401 INCHES IN
thread_quantity_per_inch20
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-282-9545
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: R20499 · 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
•
NUT STYLE: HEXAGON
•
NOMINAL THREAD SIZE: 0.625 INCHES IN
•
THREAD QUANTITY PER INCH: 20
•
THREAD PITCH DIAMETERS: +0.6365 TO 0.6401 INCHES IN
•
THREAD SERIES: UN
•
BEARING SURFACE TYPE: FLAT
•
THREAD DIRECTION: RIGHT-HAND
•
NUT HEIGHT: 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
NUT STYLEHEXAGON
NOMINAL THREAD SIZE0.625 INCHES IN
THREAD QUANTITY PER INCH20
THREAD PITCH DIAMETERS+0.6365 TO 0.6401 INCHES IN
THREAD SERIESUN
BEARING SURFACE TYPEFLAT
THREAD DIRECTIONRIGHT-HAND
NUT HEIGHT0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.922 INCHES MINIMUM AND 0.953 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
D15-716BPC426InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
D15-414AAPC426InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
D15-716WPC426InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
91892InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
10214710InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
S05225921138InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R20499?
R20499 is a NUT,PLAIN,HEXAGON.
What parts can replace R20499?
There are 25 known substitutes for R20499: D15-716BPC426, D15-414AAPC426, D15-716WPC426 and 22 more. Substitute compatibility should be verified for your specific system.
Is R20499 still available?
R20499 is currently cancelled.
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