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9S8858 — NUT,SLEEVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

9S8858: NUT,SLEEVE.

The NUT,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: SLEEVE, nut_length: 2.156 INCHES NOMINAL IN, thread_class: 2B, boss_diameter: 1.125 INCHES NOMINAL OVERALL IN, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-038-8318, 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
9S8858
NSN: 5310-01-038-8318
FSC: 5310 — Nuts and Washers
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleSLEEVE
nut_length2.156 INCHES NOMINAL IN
thread_class2B
boss_diameter1.125 INCHES NOMINAL OVERALL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
boss_thickness0.437 INCHES NOMINAL OVERALL IN
special_features0.317 IN. THK BY 3.250 IN. DIA FLANGE ATTACHED TO BOSS END OF NUT IN
thread_directionRIGHT-HAND
nominal_thread_size0.875 INCHES IN
counterbore_diameter0.915 INCHES NOMINAL BOSS IN
cross-sectional_shapeHEXAGONAL NUT
NSN5310-01-038-8318
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 9S8858 · 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 LENGTH: 2.156 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
NUT WIDTH ACROSS FLATS: 1.312 INCHES NOMINAL IN
•
NUT COUNTERBORE DEPTH: 0.468 INCHES NOMINAL BOSS IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.875 INCHES IN
•
COUNTERBORE DIAMETER: 0.915 INCHES NOMINAL BOSS IN
•
BOSS THICKNESS: 0.437 INCHES NOMINAL OVERALL IN
TECHNICAL CHARACTERISTICS
NUT LENGTH2.156 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NUT WIDTH ACROSS FLATS1.312 INCHES NOMINAL IN
NUT COUNTERBORE DEPTH0.468 INCHES NOMINAL BOSS IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.875 INCHES IN
COUNTERBORE DIAMETER0.915 INCHES NOMINAL BOSS IN
BOSS THICKNESS0.437 INCHES NOMINAL OVERALL IN
CROSS-SECTIONAL SHAPEHEXAGONAL NUT
BOSS DIAMETER1.125 INCHES NOMINAL OVERALL IN
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 3
12KP499Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
10189413Reference document
Same NSN cross-reference
Reference document — Informative reference only
9S8858-00Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9S8858?
9S8858 is a NUT,SLEEVE.
What parts can replace 9S8858?
There are 3 known substitutes for 9S8858: 12KP499, 10189413, 9S8858-00. Substitute compatibility should be verified for your specific system.
What is the NSN for 9S8858?
9S8858 is cataloged in the U.S. Government catalog under NSN 5310-01-038-8318. 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.