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8858A17 — NUT,PLAIN,EXTENDED WASHER,HEXAGO

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

8858A17: NUT,PLAIN,EXTENDED WASHER,HEXAGO.

NUT,PLAIN,EXTENDED WASHER,HEXAGO. Key specifications include material: STEEL COMP 4140 OVERALL, nut_style: HEXAGON, thread_class: 3B, thread_series: UNF, overall_height: 0.560 INCHES NOMINAL IN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-285-4433, 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
8858A17
NSN: 5310-00-285-4433
FSC: 5310 — Nuts and Washers
CAGE: 6K4C8 — GOODRICH CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OVERALL
nut_styleHEXAGON
thread_class3B
thread_seriesUNF
overall_height0.560 INCHES NOMINAL IN
thread_directionRIGHT-HAND
washer_thickness0.200 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
width_across_flats1.109 INCHES MINIMUM AND 1.127 INCHES MAXIMUM IN
nominal_thread_size0.750 INCHES IN
washer_outside_diameter2.000 INCHES NOMINAL IN
thread_quantity_per_inch16
NSN5310-00-285-4433
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8858A17 · 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
•
WASHER OUTSIDE DIAMETER: 2.000 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 1.109 INCHES MINIMUM AND 1.127 INCHES MAXIMUM IN
•
THREAD SERIES: UNF
•
WASHER THICKNESS: 0.200 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.560 INCHES NOMINAL IN
WASHER OUTSIDE DIAMETER2.000 INCHES NOMINAL IN
WIDTH ACROSS FLATS1.109 INCHES MINIMUM AND 1.127 INCHES MAXIMUM IN
THREAD SERIESUNF
WASHER THICKNESS0.200 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.750 INCHES IN
SURFACE TREATMENTCADMIUM OVERALL
NUT STYLEHEXAGON
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8858A17?
8858A17 is a NUT,PLAIN,EXTENDED WASHER,HEXAGO.
What is the NSN for 8858A17?
8858A17 is cataloged in the U.S. Government catalog under NSN 5310-00-285-4433. This indicates validated use in U.S. government and defense supply chains.
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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.